Question

present perfect negative​

Answer 1

Explanation:

Negative Sentences in the Present Perfect Simple Tense

When creating negative sentences, we usually use hasn't or haven't together + the V3 (past participle) form of the verb. Save the long forms (has not, and have not) for when you want to create emphasis. When speaking, put the stress on 'not'.

Subject: have/has +Verb(V3); (Past Participle)

I / You / We / They: have met

He / She / It: has lived