How do we make the Present Perfect Tense?
The structure of the Present Perfect is:
|subject||+||auxiliary have||+||main verb|
|conjugated in Present Simple|
|have, has||past participle|
The auxiliary verb (have) is conjugated in the Present Simple: have, has
The main verb is invariable in past participle form: -ed (or irregular)
For negative sentences we insert not between the auxiliary verb and the main verb.
For question sentences, we exchange the subject and the auxiliary verb.
Look at these example sentences with the Present Perfect tense:
|subject||auxiliary verb||main verb|
Contraction with Present Perfect
When we use the Present Perfect in speaking, we often contract the subject and auxiliary verb. We also sometimes do this in informal writing.
The car has
- You've told me that before.
- John's seen Harry Potter.
In negative sentences, we may contract the auxiliary verb and "not":
- You haven't got a chance.
- She hasn't heard from him.
- It has eaten. (Present Perfect tense, active voice)
- It is eaten. (Present Simple tense, passive voice)