be, do, have in the Past Perfect
How to use special verbs in Past Perfect
1. be as a main verb
| Pronouns | Affirmative sentences | Negative sentences | Questions |
|---|---|---|---|
| I, he, she, it, we, you, they | They had been to Britain. | They had not been to Britain. | Had they been to Britain? |
2. do as a main verb
| Pronouns | Affirmative sentences | Negative sentences | Questions |
|---|---|---|---|
| I, he, she, it, we, you, they | She had done an exercise. | She had not done an exercise. | Had she done an exercise? |
3. have as a main verb
| Pronouns | Affirmative sentences | Negative sentences | Questions |
|---|---|---|---|
| I, he, she, it, we, you, they | He had had a book. | He had not had a book. | Had he had a book? |
► We sometimes use short/contracted forms for had with affirmative or negative sentences.