Present Perfect Tense

We often use the present perfect Tense to give new information or to announce recent happening:

e.g. Do you know about Mary ? She’s gone to Jakarta.

We can use the Present Perfect Tense with already to say that something has happened sooner than expected :

e.g. Don’t forget to post this letter, will you? I’ve already posted it.

We  can use the Present Perfect Tense with just (= a short time ago)

e.g. Would you like something to eat? ‘No, thanks. I’ve just had lunch’.

We talk about a period of time that continuous up to the present, we use the present perfect.

e.g. Dave: Have you travelled a lot, Nora?

       Nora: Yes, I have been to 47 different countries.

We often use ever and never with the present perfect:

e.g. have you ever eaten caviar?

       We have never had a car.

We have to use present perfect Tense with This is the first time…, It the first time…

e.g. This is the first time  he has driven a car. (not drives)

We often use the present perfect with yet. Yet shows that the speaker is expecting something to happen. Use yet only in questions and negative sentences: e.g. Has it stopped raining yet ? (not ‘did it stop’).

The pattern:

S + have/has + verb 3……………………….etc

S + haven’t/hasn’t +  Verb 3…………….….etc

Have/has + S + verb 3………………….. ….etc?

QW + have/has + S + verb 3………………..etc?