The perfect tense follows the format, Have + Past Participle, when we use it. Since we are studying the present perfect, you need to change the auxiliary verb (have) into either “have” or “has” depending on the subject.

Let’s take a look:

Positive Negative Question
I have seen that movie I haven’t seen that movie Have I seen that movie?
You have been to Texas You haven’t been to Texas Have you been to Texas?
He has studied English He hasn’t studied English Has he studied English?
She has eaten pizza She hasn’t eaten pizza Has she eaten pizza?
It has been a long time It hasn’t been a long time Has it been a long time?
We have flown to Europe We haven’t flown to Europe Have we flown to Europe?
They have heard the song They haven’t heard the song Have they heard the song?

Do not forget that the past participle can be different from the base verb depending on if it is a regular or irregular verb. The only way to learn irregular verbs is to memorize them. Check this link for more: Irregular Verb List

Present Perfect Simple Use

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