Question

present perfect tense formula aff neg intro​

Answer 1

Answer:

present perfect tense:

Affermative:(subject+Has/Have+v3+object)

Negative: (subject+Has/Have+not+v3+object)

Intoragative: (Has/Have+sub+v3+object?)

I'll be happy if it is useful to you

Answer 2

Present Perfect Tense

Affirmative structure : Subject + have/has + past participle form of verb + object + extension.

Negative structure : Subject + have/has + not +past participle form of verb + object + extension.

Interrogative structure : Have/ has + Subject +past participle form of verb + object + extension?

Negative Interrogative structure : Have/ has + not + Subject + past participle form of verb + object + extension?

NB:If the subject is third person singular number, the auxiliary verb will be 'has' otherwise 'have'.