We use have/has + the -ed form of the verb.
+ I, we, you, they + have (short form 'e) + done
He, she, it + has (short form 's)
- I, we, you, they + have not (short form haven’t) + done
He, she, it + has not (short form hasn’t)
? Have + I, we, you, they + not + done
Has + He, she, it + not
USE We use the present perfect simple to refer to events in the past but which connect to the present.
- Experiences: We use the present perfect simple to talk about our experiences up to now. The time of the experiences is not important:
ex: And I’ve seen ‘Star wars’ and I’ve seen ‘Avengers’ in New York. And I want to see ‘Justice league’ next.
Although we do not give a specific time, we often use general time expressions like ever, never, before, in my life, so far, up until now with this use of the present perfect simple:
ex: We haven’t met before, have we?
- Recent completed events: We use the present perfect simple to talk about a finished event or state in the very recent past. We do not give a specific time. We often use words like just or recently for events taking place a very short time before now:
ex: Jennifer and Peter have just come back from a week in Japan.
- Past events, present results: We use the present perfect simple when a single past action has a connection with the present:
ex: Your belongings haven’t arrived. (Your belongings are not here; they were supposed to arrive in the past.).
- Ever: ex: Have you ever met John?
- Time + for and since: ex: I've worked here since I left school.
- How long …? ex: How long have you known Lucy?
- Yet ex: Have you finished your homework yet?
- Already ex: Why has she gone already?
-Still ex: James still hasn't arrived. He's really late!
I haven't finished my English essay yet. I'll do it at the weekend.
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