Subject + Have / Has + Past Participle form of The Verb + the rest of the sentence.
In this tense, the use of the auxiliaries "Have - Has" depends on the subject of the sentence.
If the Subject is or equals "He - She - It" we use the auxiliary "Has" + Past Participle of the verb.
If the subject is or equals "I - You - We - They" we use the auxiliary "Have" + Past Participle of the verb.
If the main verb of the sentence is regular, the Past Participle form is the same as the Past Simple, that is to say, we add "-ed" to the end of the verb.
If the verb of the sentence is irregular, it is written according to the 3° column of the list of irregular verbs (Past Participle).
Examples
I have never flown in a plane.
Subject "I" = Auxiliary "Have".
Verb "Flown" = Past Participle of Irregular Verb "Fly".
British
American
Tony has worked in many different places.
Subject "He" = Auxiliary "Has".
Verb "Worked" = Past Participle of Regular Verb "Work".
British
American
He has just opened the window.
British
American
They have already been to Paris.
British
American
Subject + Have Not / Has Not + Past Participle of The Verb + the rest of the sentence.
In the negative form, the same structure as in the affirmative form is used but you add "not" to the auxiliary verb, writing...
Have not (Haven't) or Has not (Hasn't).
Examples
She hasn't studied for the lesson.
British
American
They haven't visited Australia yet.
British
American
My best friend has not worked with him.
British
American
They have not bought a new car.
British
American
Have / Has + Subject + Past Participle of The Verb + the rest of the sentence ...?
In the interrogative form, the auxiliaries "Have or Has" are written before the subject of the sentence and the verb is also written in Past Participle.
Examples
Have you learned Japanese?
British
American
Has she cooked the cake?
British
American
Have you talked to Jane?
British
American
Has Emily cleaned her room?
British
American
1 Which of the following sentences is grammatically wrong?
2 _____ Japanese?
3 Kristen _____ Mike yet.
4 I _____ a lot of photos.
5 You _____ a great job.
6 The Present Perfect is used to talk about actions that started and finished in the past.
7 The Present Perfect is not specific.
8 The main verb is always conjugated in the Participle form.
9 I _____ finished my homework yet.
10 They _____ gone to Brazil.
11 She _____ just arrived home.
12 My father hasn't _____ the car.
13 The journalist has _____ the article.
14 _____ you ever seen that movie?
15 _____ he ever been to Paris?
