Question

identify the sentences in present perfect tense....

Answer 1

no 1

and 4

is in present perfect tense..

present perfect tense formation

sub+has/have+main verb (3rd form)+obj+remaining..

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Answer 2

Answer:

The sentence 1st and 4th is in the form of present perfect tense.

Explanation:

As 2nd is past perfect

and

3rd is past indefinite. tense.

1st and 4th are in the form of present perfect.

We identify it as

Sub + have/ has + V 3 + obj.

Hope it may be helpful.