English grammar worksheet focusing on identifying and using progressive tenses of verbs.

Part 1: Identifying the Progressive Tenses of Verbs (Practice 21.2G)

#### Instructions:
Read the sentences and identify whether the underlined verb tense is present progressive, past progressive, future progressive, present perfect progressive, past perfect progressive, or future perfect progressive.

#### Sentences:
1. Leticia was studying for the midterm.
2. The morning show will be discussing new movies after the commercial break.
3. I have been shopping there for years.
4. The mechanic is repairing our car.
5. The storyteller had been recounting an interesting tale.
6. Bruce has been telling me all about his adventure.
7. It had been explaining the answer to us.
8. They were explaining the answer to us.
9. By Friday, we will have been living in the new house for Six weeks.
10. Are you babysitting tonight?

#### Solutions:
1. Leticia was studying for the midterm.
- Answer: Past progressive

2. The morning show will be discussing new movies after the commercial break.
- Answer: Future progressive

3. I have been shopping there for years.
- Answer: Present perfect progressive

4. The mechanic is repairing our car.
- Answer: Present progressive

5. The storyteller had been recounting an interesting tale.
- Answer: Past perfect progressive

6. Bruce has been telling me all about his adventure.
- Answer: Present perfect progressive

7. It had been explaining the answer to us.
- Answer: Past perfect progressive

8. They were explaining the answer to us.
- Answer: Past progressive

9. By Friday, we will have been living in the new house for six weeks.
- Answer: Future perfect progressive

10. Are you babysitting tonight?
- Answer: Present progressive

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Part 2: Using Progressive Tenses of Verbs (Practice 21.2H)

#### Instructions:
Read the sentences and rewrite each one as a complete sentence using the tense of the verb in parentheses.

#### Sentences:
11. The birds _________ south. (fly, present progressive)
12. The columnist _________ for the magazine for two decades. (write, present perfect progressive)
13. They _________ company for dinner. (expect, past progressive)
14. Up until then, the mail carrier _________ his route. (walk, past perfect progressive)
15. I _________ at least one box. (carry, future progressive)

#### Solutions:
11. The birds are flying south.
- Explanation: The present progressive tense is formed by using "be + verb-ing." Here, "are flying" indicates an ongoing action in the present.

12. The columnist has been writing for the magazine for two decades.
- Explanation: The present perfect progressive tense is formed by using "have/has been + verb-ing." This tense describes an action that started in the past and continues up to the present.

13. They were expecting company for dinner.
- Explanation: The past progressive tense is formed by using "was/were + verb-ing." This tense describes an action that was happening at a specific time in the past.

14. Up until then, the mail carrier had been walking his route.
- Explanation: The past perfect progressive tense is formed by using "had been + verb-ing." This tense describes an action that was ongoing before another past event.

15. I will be carrying at least one box.
- Explanation: The future progressive tense is formed by using "will be + verb-ing." This tense describes an action that will be ongoing at a specific time in the future.

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Final Answers:

#### Practice 21.2G:
1. Past progressive
2. Future progressive
3. Present perfect progressive
4. Present progressive
5. Past perfect progressive
6. Present perfect progressive
7. Past perfect progressive
8. Past progressive
9. Future perfect progressive
10. Present progressive

#### Practice 21.2H:
11. The birds are flying south.
12. The columnist has been writing for the magazine for two decades.
13. They were expecting company for dinner.
14. Up until then, the mail carrier had been walking his route.
15. I will be carrying at least one box.

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Boxed Final Answer:

```plaintext
Practice 21.2G:
1. Past progressive
2. Future progressive
3. Present perfect progressive
4. Present progressive
5. Past perfect progressive
6. Present perfect progressive
7. Past perfect progressive
8. Past progressive
9. Future perfect progressive
10. Present progressive

Practice 21.2H:
11. The birds are flying south.
12. The columnist has been writing for the magazine for two decades.
13. They were expecting company for dinner.
14. Up until then, the mail carrier had been walking his route.
15. I will be carrying at least one box.
```