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Past Perfect Continuous, Examples & Exercises

past perfect continuous, examples

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Let’s explore about Past Perfect Continuous, Examples & Exercises

The past perfect continuous tense, also known as the past perfect progressive tense, is a verb form used to express actions or events that were ongoing in the past, had already started before another action or event took place, and continued up until a specific point in the past. This tense is especially useful when emphasizing the duration or length of an action that occurred before another past event. Past perfect continuous, examples

To form the past perfect continuous tense, we use the auxiliary verb “had” in the past perfect tense, followed by “been” and the present participle form (-ing) of the main verb.

The sentence structure for the past perfect continuous tense is as follows:

Sentence Structure

Subject + had + been + verb (present participle form) + object

The key features of the past perfect continuous tense are as follows:

  1. Ongoing Action: The past perfect continuous tense is used to describe actions or events that were ongoing or in progress in the past. It emphasizes that the action had started before another event took place and continued up until a specific point in the past.
  2. Duration: This tense puts emphasis on the duration or length of the action that occurred before another past event. It indicates that the action was happening for a significant period of time.
  3. Past Reference Point: The past perfect continuous tense requires a reference point in the past, typically expressed through a simple past tense verb. It helps establish the point at which the action of the past perfect continuous tense was completed or interrupted.
  4. Structure: The past perfect continuous tense is formed by using the auxiliary verb “had” in the past perfect tense, followed by “been” and the present participle form (-ing) of the main verb.
  5. Signal Words: Signal words or phrases such as “for,” “since,” “all day,” “how long,” “until,” or “by the time” are often used in sentences with the past perfect continuous tense to indicate the duration or time period of the action.

Now, let’s take a closer look at some examples to better understand the usage of the past perfect continuous tense:

Example

  • She had been studying for three hours before she took a break.

In this sentence, the past perfect continuous tense indicates that the action of studying began in the past and continued for a duration of three hours before she decided to take a break. It emphasizes the ongoing nature of her studying.

Example

  • They had been waiting for the bus since morning before it finally arrived.

Here, the past perfect continuous tense conveys that the action of waiting started in the past and continued until the bus finally arrived. The sentence emphasizes the extended period of waiting.

Example

  • By the time I got to the party, they had been dancing for hours.

This example highlights that the action of dancing started before the speaker arrived at the party and continued for a significant period of time. The past perfect continuous tense emphasizes the duration of their dancing.

Example

  • The team had been practicing diligently before the big game.

In this sentence, the past perfect continuous tense suggests that the team began practicing in the past and continued their efforts until the occurrence of the important game. It stresses the prolonged nature of their practice sessions.

Example

  • He had been working on the project for several weeks before he submitted it.

This example indicates that the action of working on the project commenced prior to the submission and lasted for several weeks. The past perfect continuous tense emphasizes the extensive duration of his work.

Here are a few more examples with different subjects and verbs:

Here are a few more examples of sentences in the past perfect continuous tense, featuring different subjects and verbs:

Examples

  • I had been working on the project for hours before I realized I had made a mistake.
  • They had been traveling around Europe for months before they ran out of money.
  • The children had been playing in the park all afternoon before it started raining.
  • She had been studying French for years before she finally became fluent.
  • We had been waiting for the bus for over an hour before it finally arrived.
  • He had been practicing the guitar every day for weeks before his first performance.
  • The team had been training tirelessly for months before they won the championship.
  • Sarah had been cooking dinner when the power suddenly went out.
  • The construction workers had been building the skyscraper for months before it was completed.
  • The dog had been barking incessantly before the neighbors complained.

These examples demonstrate how the past perfect continuous tense can be used with different subjects and verbs to describe ongoing actions in the past and emphasize their duration or length.

How to make Affirmative Sentences in the past perfect continuous tense?

To form affirmative sentences in the past perfect continuous tense, follow this structure:

Sentence Structure

Subject + had + been + verb (present participle form) + object

Here are some examples of affirmative sentences in the past perfect continuous tense:

Examples

  • I had been studying English for two hours before the phone rang.
  • They had been waiting at the restaurant for 30 minutes before their friends arrived.
  • She had been working on the project all morning before she took a lunch break.
  • We had been traveling for days before we reached our destination.
  • The team had been practicing diligently for weeks before the big match.
  • He had been jogging in the park for an hour before it started to rain.
  • The children had been playing outside for hours before their parents called them inside.
  • Sarah had been writing her novel for months before she finally finished it.
  • The workers had been constructing the building for over a year before it was inaugurated.
  • The students had been studying for the exam all night before they felt prepared.

In these examples, the past perfect continuous tense is used to describe ongoing actions or events that occurred in the past and emphasize their duration or length. The structure “had + been + verb (present participle form)” is used to convey this tense in affirmative sentences.

How to make Negative Sentences in the past perfect continuous tense?

To form negative sentences in the past perfect continuous tense, follow this structure:

Sentence Structure

Subject + had not (hadn’t) + been + verb (present participle form) + object

Here are some examples of negative sentences in the past perfect continuous tense:

Examples

  • I hadn’t been studying English for two hours before the phone rang.
  • They hadn’t been waiting at the restaurant for 30 minutes before their friends arrived.
  • She hadn’t been working on the project all morning before she took a lunch break.
  • We hadn’t been traveling for days before we reached our destination.
  • The team hadn’t been practicing diligently for weeks before the big match.
  • He hadn’t been jogging in the park for an hour before it started to rain.
  • The children hadn’t been playing outside for hours before their parents called them inside.
  • Sarah hadn’t been writing her novel for months before she finally finished it.
  • The workers hadn’t been constructing the building for over a year before it was inaugurated.
  • The students hadn’t been studying for the exam all night before they felt prepared.

In these examples, the negative form of the past perfect continuous tense is used to express that the action or event did not occur in the past. The structure “had not (hadn’t) + been + verb (present participle form)” is used to create the negative form in the past perfect continuous tense.

How to make Negative Sentences in the past perfect continuous tense?

The past perfect continuous, also known as the past perfect progressive, is used to describe an action that had been in progress for a certain amount of time in the past, before another action in the past.

The structure for the past perfect continuous is as follows:

Sentence Structure

Subject + had been + verb + -ing + (before + subject + verb + in past tense)

The auxiliary verb “had been” is used to indicate that the action was in progress for a certain amount of time before another action in the past. The main verb is in its present participle form (-ing).

Examples

  • I had been studying for my exam for three hours before I felt tired. (The action of “studying” had been in progress for three hours before the subject felt tired.)
  • They had been playing soccer for an hour before they decided to take a break. (The action of “playing soccer” had been in progress for an hour before they decided to take a break.)

It is crucial to note that the action that was in progress before is described using past perfect continuous and the other action is described using simple past.

For example: He had been working on the project for weeks before he realized it was too complicated.

In this example, the action of “working on the project” had been in progress for weeks and the subject

How to make Interrogative Sentences in the past perfect continuous tense?

To form interrogative sentences in the past perfect continuous tense, follow this structure:

Sentence Structure

Had + subject + been + verb (present participle form) + object + ?

Here are some examples of interrogative sentences in the past perfect continuous tense:

Examples

  • Had I been studying English for two hours before the phone rang?
  • Had they been waiting at the restaurant for 30 minutes before their friends arrived?
  • Had she been working on the project all morning before she took a lunch break?
  • Had we been traveling for days before we reached our destination?
  • Had the team been practicing diligently for weeks before the big match?
  • Had he been jogging in the park for an hour before it started to rain?
  • Had the children been playing outside for hours before their parents called them inside?
  • Had Sarah been writing her novel for months before she finally finished it?
  • Had the workers been constructing the building for over a year before it was inaugurated?
  • Had the students been studying for the exam all night before they felt prepared?

In these examples, the interrogative form of the past perfect continuous tense is used to ask questions about ongoing actions or events that occurred in the past. The structure “Had + subject + been + verb (present participle form) + object + ?” is used to create the interrogative form in the past perfect continuous tense.

How to make Negative Interrogative Sentences in the past perfect continuous tense?

To form negative interrogative sentences in the past perfect continuous tense, follow this structure:

Sentence Structure

Hadn’t + subject + been + verb (present participle form) + object + ?

Here are some examples of negative interrogative sentences in the past perfect continuous tense:

Examples

  • Hadn’t I been studying English for two hours before the phone rang?
  • Hadn’t they been waiting at the restaurant for 30 minutes before their friends arrived?
  • Hadn’t she been working on the project all morning before she took a lunch break?
  • Hadn’t we been traveling for days before we reached our destination?
  • Hadn’t the team been practicing diligently for weeks before the big match?
  • Hadn’t he been jogging in the park for an hour before it started to rain?
  • Hadn’t the children been playing outside for hours before their parents called them inside?
  • Hadn’t Sarah been writing her novel for months before she finally finished it?
  • Hadn’t the workers been constructing the building for over a year before it was inaugurated?
  • Hadn’t the students been studying for the exam all night before they felt prepared?

In these examples, the negative interrogative form of the past perfect continuous tense is used to ask questions with a negative assumption about ongoing actions or events that occurred in the past. The structure “Hadn’t + subject + been + verb (present participle form) + object + ?” is used to create the negative interrogative form in the past perfect continuous tense.

How to make tag sentences with past perfect continuous tense?

To form tag sentences in the past perfect continuous tense, you can use the auxiliary verb “had” and the pronoun “you” as the tag. The structure for tag questions in the past perfect continuous tense is as follows:

Sentence Structure

Subject + had + subject + been + verb (present participle form), hadn’t you?

Here are some examples of tag sentences in the past perfect continuous tense:

Examples

  • You had been studying English for two hours, hadn’t you?
  • They had been waiting at the restaurant for 30 minutes, hadn’t they?
  • She had been working on the project all morning, hadn’t she?
  • We had been traveling for days, hadn’t we?
  • The team had been practicing diligently for weeks, hadn’t they?
  • He had been jogging in the park for an hour, hadn’t he?
  • The children had been playing outside for hours, hadn’t they?
  • Sarah had been writing her novel for months, hadn’t she?
  • The workers had been constructing the building for over a year, hadn’t they?
  • The students had been studying for the exam all night, hadn’t they?

In these examples, the tag question “hadn’t you?” is added at the end of the statement to seek confirmation or agreement. The pronoun “you” is used in the tag question, but it can be changed to match the subject of the sentence.

Examples of sentences using the question word “who” in the past perfect continuous tense:

past perfect continuous, examples

Examples of sentences using the question word “what” in the past perfect continuous tense:

The sentence structure for using the question word “what” in the past perfect continuous tense is as follows:

Sentence Structure

Question Word “What” + had + been + verb (present participle form) + object + ?

Here are some examples of sentences using the question word “what” in the past perfect continuous tense:

Examples

  • What had been happening before the power outage occurred?
  • What had been causing the noise in the basement before it stopped?
  • What had been cooking in the oven before it started emitting smoke?
  • What had been occupying their time before they found a new hobby?
  • What had been troubling him before he sought professional help?
  • What had been brewing in the pot before it boiled over?
  • What had been playing on the radio before it suddenly went silent?
  • What had been contributing to the traffic congestion before the accident?
  • What had been growing in the garden before the flowers bloomed?
  • What had been occupying their minds before they discovered a solution?

Examples of sentences using the question word “when” in the past perfect continuous tense:

The sentence structure for using the question word “when” in the past perfect continuous tense is as follows:

Sentence Structure

Question Word “When” + had + subject + been + verb (present participle form) + object + ?

Here are some examples of sentences using the question word “when” in the past perfect continuous tense:

Examples

  • When had they been studying for the exam before they felt prepared?
  • When had she been working on the project all morning before she took a lunch break?
  • When had the team been practicing diligently for weeks before the big match?
  • When had he been jogging in the park for an hour before it started to rain?
  • When had the children been playing outside for hours before their parents called them inside?
  • When had Sarah been writing her novel for months before she finally finished it?
  • When had the workers been constructing the building for over a year before it was inaugurated?
  • When had you been waiting at the restaurant for 30 minutes before your friends arrived?
  • When had the students been studying English for two hours before the phone rang?
  • When had the construction crew been working on the road before it was reopened?

In these examples, the question word “when” is used to inquire about the specific time or point in the past when the ongoing action or event took place. The structure “When + had + subject + been + verb (present participle form) + object + ?” is used to form questions about the past perfect continuous tense with “when” as the question word.

Examples of sentences using the question word “where” in the past perfect continuous tense:

The sentence structure for using the question word “where” in the past perfect continuous tense is as follows:

Sentence Structure

Question Word “Where” + had + subject + been + verb (present participle form) + object + ?

Here are some examples of sentences using the question word “where” in the past perfect continuous tense:

Examples

  • Where had they been traveling for days before they reached their destination?
  • Where had she been working on the project all morning before she took a lunch break?
  • Where had the team been practicing diligently for weeks before the big match?
  • Where had he been jogging in the park for an hour before it started to rain?
  • Where had the children been playing outside for hours before their parents called them inside?
  • Where had Sarah been writing her novel for months before she finally finished it?
  • Where had the workers been constructing the building for over a year before it was inaugurated?
  • Where had you been waiting at the restaurant for 30 minutes before your friends arrived?
  • Where had the students been studying for the exam all night before they felt prepared?
  • Where had the construction crew been working on the road before it was reopened?

In these examples, the question word “where” is used to inquire about the location or place where the ongoing action or event took place in the past. The structure “Where + had + subject + been + verb (present participle form) + object + ?” is used to form questions about the past perfect continuous tense with “where” as the question word.

Examples of sentences using the question word “why” in the past perfect continuous tense:

The sentence structure for using the question word “why” in the past perfect continuous tense is as follows:

Sentence Structure

Question Word “Why” + had + subject + been + verb (present participle form) + object + ?

Here are some examples of sentences using the question word “why” in the past perfect continuous tense:

Examples

  • Why had they been studying for the exam for hours before they felt prepared?
  • Why had she been working on the project tirelessly all morning before she took a lunch break?
  • Why had the team been practicing diligently for weeks before the big match?
  • Why had he been jogging in the park for an hour before it started to rain?
  • Why had the children been playing outside for hours before their parents called them inside?
  • Why had Sarah been writing her novel for months before she finally finished it?
  • Why had the workers been constructing the building for over a year before it was inaugurated?
  • Why had you been waiting at the restaurant for 30 minutes before your friends arrived?
  • Why had the students been studying English for two hours before the phone rang?
  • Why had the construction crew been working on the road for days before it was reopened?

In these examples, the question word “why” is used to inquire about the reason or purpose behind the ongoing action or event in the past. The structure “Why + had + subject + been + verb (present participle form) + object + ?” is used to form questions about the past perfect continuous tense with “why” as the question word.

Examples of sentences using the question word “how” in the past perfect continuous tense:

The sentence structure for using the question word “how” in the past perfect continuous tense is as follows:

Sentence Structure

Question Word “How” + had + subject + been + verb (present participle form) + object + ?

Here are some examples of sentences using the question word “how” in the past perfect continuous tense:

Examples

  • How had they been studying for the exam before they felt prepared?
  • How had she been working on the project all morning before she took a lunch break?
  • How had the team been practicing diligently for weeks before the big match?
  • How had he been jogging in the park for an hour before it started to rain?
  • How had the children been playing outside for hours before their parents called them inside?
  • How had Sarah been writing her novel for months before she finally finished it?
  • How had the workers been constructing the building for over a year before it was inaugurated?
  • How had you been waiting at the restaurant for 30 minutes before your friends arrived?
  • How had the students been studying English for two hours before the phone rang?
  • How had the construction crew been working on the road for days before it was reopened?

In these examples, the question word “how” is used to inquire about the manner or method of the ongoing action or event in the past. The structure “How + had + subject + been + verb (present participle form) + object + ?” is used to form questions about the past perfect continuous tense with “how” as the question word.

Tips and techniques for using the past perfect continuous tense effectively

Let’s take a simple sentence and construct it using different tenses, including the past perfect continuous tense, to highlight the differences:

Common errors and pitfalls when using the past perfect continuous tense

When using the past perfect continuous tense, there are some common errors and pitfalls to watch out for. Here are a few:

Incorrect use of “had been”: One common mistake is using “had been” without the present participle form of the verb (-ing form). Remember that the past perfect continuous tense requires the auxiliary verb “had” followed by “been” and the present participle form of the main verb.

Example

  • Incorrect: He had been work on the project. Correct: He had been working on the project.

Unnecessary use of the past perfect continuous tense: Sometimes, the past perfect continuous tense is used unnecessarily when a simpler tense could suffice. Avoid overusing this tense when a more straightforward past tense would convey the same meaning.

Example

  • Incorrect: She had been cooking dinner when the doorbell rang. Correct: She was cooking dinner when the doorbell rang.

Incorrect time reference: Ensure that the time reference in the sentence aligns correctly with the past perfect continuous tense. The action described should have started before a specific point or event in the past.

Example

  • Incorrect: They had been playing basketball since yesterday. Correct: They had been playing basketball before it started raining.

Confusing past continuous and past perfect continuous tenses: The past continuous tense (e.g., “was/were + verb-ing”) describes an ongoing action in the past, while the past perfect continuous tense emphasizes the duration of an ongoing action before another past event. Be careful not to mix up these two tenses.

Example

  • Incorrect: She had been singing when I was watching TV. Correct: She had been singing before I started watching TV.

Lack of clarity or ambiguity: Sometimes, incorrect sentence structures or inadequate context can lead to confusion or ambiguity. Ensure that your sentence is clear and conveys the intended meaning accurately.

Example

  • Incorrect: The students had been studying the subject they didn’t understand. Correct: The students had been studying the subject they didn’t understand for hours.

To avoid these errors and pitfalls, it’s essential to understand the rules and usage of the past perfect continuous tense. Practice constructing sentences, proofread your work, and seek feedback from native speakers or language resources to refine your understanding and usage of this tense.

Fill in the blanks with the correct form of a verb given in the brackets.

Here are 30 fill-in-the-blank sentences in the past perfect continuous tense, each followed by a multiple-choice question (MCQ) with verbs given in brackets:

  1. She ___________ (study / studying / studied) English for three years before she moved to Canada.
  2. They ___________ (work / working / worked) on the project all night before it was completed.
  3. By the time I arrived, he ___________ (waited / was waiting / had been waiting) for over an hour.
  4. We ___________ (travel / traveled / had been traveling) for days before we reached our destination.
  5. The baby ___________ (cry / crying / cried) for hours before finally falling asleep.
  6. The team ___________ (practice / practicing / had been practicing) diligently for weeks before the big game.
  7. She ___________ (live / lived / had been living) in that city for ten years before she moved away.
  8. By the time we got to the party, they ___________ (dance / danced / had been dancing) for hours.
  9. The engine ___________ (make / making / had been making) strange noises for weeks before it broke down.
  10. He ___________ (play / playing / had been playing) the guitar since he was a child.
  11. They ___________ (cook / cooking / had been cooking) dinner when the power went out.
  12. The students ___________ (study / studying / had been studying) for the test all day before they felt prepared.
  13. By the time she arrived at the theater, the show ___________ (start / starting / had been starting) for ten minutes.
  14. The sun ___________ (shine / shining / had been shining) all day before it disappeared behind the clouds.
  15. I could smell something delicious in the kitchen. Someone ___________ (cook / was cooking / had been cooking) a meal.
  16. The construction crew ___________ (work / working / had been working) on the road for weeks before it was reopened.
  17. He ___________ (run / running / had been running) a marathon for hours before he collapsed from exhaustion.
  18. The children ___________ (play / playing / had been playing) in the park all afternoon before it started to rain.
  19. The phone rang while I ___________ (watch / watching / had been watching) my favorite TV show.
  20. The students ___________ (study / studying / had been studying) English for two hours before the teacher arrived.
  21. By the time they found a solution, they ___________ (search / searching / had been searching) for days.
  22. The orchestra ___________ (practice / practicing / had been practicing) the symphony for months before the concert.
  23. She was exhausted because she ___________ (work / working / had been working) overtime for weeks.
  24. The flowers were beautiful. The gardener ___________ (care / caring / had been caring) for them with dedication.
  25. They ___________ (travel / traveling / had been traveling) around the world for a year before they settled down.
  26. The cake smelled delicious. Someone ___________ (bake / baking / had been baking) in the kitchen.
  27. By the time they arrived, the party ___________ (start / starting / had been starting) without them.
  28. The athletes ___________ (train / training / had been training) for months before the championship.
  29. He was out of breath. He ___________ (run / running / had been running) to catch the bus.
  30. The children were tired because they ___________ (play / playing / had been playing) outside all day.

MCQs:

  1. She had been studying English for three years before she moved to Canada. (Options: study / studying / studied)
  2. They had been working on the project all night before it was completed. (Options: work / working / worked)
  3. By the time I arrived, he had been waiting for over an hour. (Options: waited / was waiting / had been waiting)

60 examples of past perfect continuous tense

Below are 60 interesting and commonly used sentences in past continuous tense. You can practice with them by making negative, interrogative, negative interrogative, tag questions and other sentences as mentioned above. This will help you understand this tense more effectively.

Examples

  1. She had been studying French for five years before she moved to Paris.
  2. The children had been playing in the park for hours before it started to rain.
  3. We had been waiting at the airport for two hours before the flight was finally announced.
  4. By the time they arrived, the movie had been playing for 30 minutes.
  5. The team had been practicing diligently all season before they won the championship.
  6. He had been working on his novel for months before he finally completed it.
  7. They had been living in that house for ten years before they decided to sell it.
  8. The clock had been ticking loudly for days before it suddenly stopped.
  9. By the time she woke up, the sun had been shining brightly for hours.
  10. The construction workers had been renovating the building for weeks before it was ready for occupancy.
  11. I had been waiting for her call all evening before she finally dialed my number.
  12. The students had been studying for the exam all night before they felt prepared.
  13. By the time he got to the restaurant, his friends had been waiting for him for an hour.
  14. The engine had been making strange noises for weeks before it finally broke down.
  15. They had been traveling around the world for a year before they decided to settle down.
  16. The storm had been raging outside for hours before it finally subsided.
  17. By the time they found a solution, they had been brainstorming for days.
  18. The athletes had been training rigorously for months before the Olympic Games.
  19. She had been teaching at the university for twenty years before she retired.
  20. The baby had been crying for hours before it finally fell asleep.
  21. They had been working together as a team for years before they started their own business.
  22. By the time he finished the marathon, he had been running for six hours straight.
  23. The flowers were beautiful because the gardener had been taking care of them diligently.
  24. She had been saving money for a long time before she could afford her dream vacation.
  25. The students had been rehearsing the play for weeks before the opening night.
  26. By the time they arrived at the party, the guests had been dancing for hours.
  27. The snow had been falling steadily all night before it covered the entire landscape.
  28. He had been playing the piano since he was a child, so he was incredibly skilled.
  29. They had been working in the field all day before they realized they forgot their lunch.
  30. By the time they reached the mountaintop, they had been hiking for six hours.
  31. The clock had been ticking ominously in the haunted house for decades.
  32. The kids had been begging for ice cream all day before their parents finally gave in.
  33. By the time the fire department arrived, the fire had been spreading uncontrollably.
  34. The students had been attending the university for four years before they graduated.
  35. He had been searching for his lost keys everywhere before he found them in his pocket.
  36. They had been fishing in the lake for hours before they finally caught a big one.
  37. By the time they finished the puzzle, they had been working on it for days.
  38. The workers had been protesting for better wages before the company finally met their demands.
  39. The baby had been crawling around the house exploring before she fell asleep.
  40. They had been studying the stars in the observatory all night before they made a significant discovery.
  41. By the time she arrived at the party, the guests had been mingling and socializing for hours.
  42. The storm had been brewing in the distance for a while before it finally reached the city.
  43. He had been jogging every morning for a month before he noticed any improvement in his fitness.
  44. They had been arguing about the topic for hours before they agreed to disagree.
  45. By the time they boarded the plane, the passengers had been waiting in the terminal for hours.
  46. The tree had been growing in the backyard for years before it finally bore fruits.
  47. She had been dreaming about her wedding day since she was a little girl.
  48. The students had been studying late into the night before the important exam.
  49. By the time the rescue team arrived, the trapped hikers had been waiting for help for hours.
  50. The clock had been chiming every hour for centuries before it stopped working.
  51. They had been attending the same school since kindergarten before they went their separate ways.
  52. The baby had been babbling and giggling for a while before she said her first word.
  53. By the time they reached the summit, they had been climbing the mountain for days.
  54. The workers had been repairing the road for weeks before it was finally reopened.
  55. He had been writing his novel for years before it became a bestseller.
  56. They had been watching the movie marathon for hours before they got tired and left.
  57. By the time they finished their project, they had been collaborating for months.
  58. The rain had been falling steadily all day before it turned into a heavy downpour.
  59. She had been practicing her dance routine for hours before the big performance.
  60. They had been building their dream house for years before it was finally completed.

References

Website links

  • English Grammar
  • Grammar-Quizzes.com
  • Perfect-English-Grammar.com
  • ESLBase.com
  • UsingEnglish.com

You can consider well-known grammar books like

  • “English Grammar in Use” by Raymond Murphy,
  • “The Blue Book of Grammar and Punctuation” by Jane Straus,
  • “Practical English Usage” by Michael Swan.

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