Luyện ngữ pháp - English Grammar for Academic Purposes - Chapter 2: Time Travel)


I. INTRODUCTION AND OVERVIEW

2.0 How to Write the Perfect Tense

2.1 Use of Participles

Participles are used to form Perfect Tense verbs. However, it is important to realize that not every participle you see is a Perfect Tense Verb. Participles actually have many functions. Only one of them is for the Perfect Tense:

  • They can be used in perfect tense verbs.
  • They can be used as used to form the adjective form of the verb.
  • They can be used to form the passive tense of verbs.

Example: The cake has been eaten.

The participle form of the verb can be either regular or irregular.

For the regular form of the verb, simply add 'ed', just like the simple past tense. The irregular participle form of the verb is complicated. There are a few patterns that it follows, but there are many variations of each verb.

Examples:

Past, present, and future of the irregular form of the Perfect Tense:

I have eaten (past) I had eaten (present) I will have eaten (future)

2.2 Form

The Perfect Tense is formed by starting with the past, present or future form of the helping or auxiliary verb 'Have/Has'. Add the participle form of the verb.

Have/Has + Participle Verb

- had + worked (regular past)

- had + eaten (irregular past)

- have/has + worked (regular present)

- have/has + eaten (irregular present)

- will have + worked (regular future)

- will have + eaten (irregular future)

2.3 Contractions

Contractions can be formed with the Perfect Tense; however, contractions are not possible in some of them. They are used for speaking or for informal written communication.

Singular Plural
Present
I have eaten → I've eaten
You have eaten → You've eaten
He has eaten → He's eaten
She has eaten → She's eaten
It has eaten → It's eaten		 We have eaten → We've eaten
You have eaten → You've eaten
They have eaten → They'd eaten
Past (not used in writing)
I had eaten → I'd eaten
You had eaten → You'd eaten
He had eaten → He'd eaten
She had eaten → She'd eaten
It had eaten → It'd eaten		 We had eaten → We'd eaten
You had eaten → You'd eaten
They had eaten → They'd eaten
Future (less commonly used in writing)
I will have eaten → I'll have eaten
You will have eaten → You'll have eaten
He will have eaten → He'll have eaten
She will have eaten → She'll have eaten
It will have eaten → It'll have eaten		 We will have eaten → We'll have eaten
You will have eaten → You'll have eaten
They will have eaten → They'll have eaten

Exercise 1: Write the Perfect Tense in the Present of the following verbs.

Some are regular verbs, and some are irregular verbs. Nhập câu trả lời vào ô trống.

      1. go →

      2. sleep →

      3. walk →

      4. call →

      5. appear →

      6. have →

      7. tell →

      8. write →

      9. contact →

      10. analyze →

Exercise 2: Now write the Perfect Tense Verbs in the Past.

Nhập câu trả lời vào ô trống.

      1. go →

      2. sleep →

      3. walk →

      4. call →

      5. appear →

      6. have →

      7. tell →

      8. write →

      9. contact →

      10. analyze →

Exercise 3: Write these verbs in the Future Perfect Tense.

Nhập câu trả lời vào ô trống.

      1. go →

      2. sleep →

      3. walk →

      4. call →

      5. appear →

      6. have →

      7. tell →

      8. write →

      9. contact →

      10. analyze →

- 1. The Perfect and Perfect Continuous Tenses Compared - II. USING THE PERFECT TENSE FOR TIME


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