The
Definition of Present Perfect Tense :
1. Present perfect tense is a kind of tense
that is used to describe an action or an event that took place at an indefinite
time or over a period of time in the past, but still has relevance in the
present. The present perfect is a construction made up of the auxiliary have +
the past participle form of the main verb.
● The
pattern : Verbal sentences (+) = S + have / has + V3 + O/C
( -) = S + have/has + not + V3
( ?) = Have/has + S + V3
Nominal sentences = S + have/has +
been + C
● Adverb of
Time : Already, Never/ever, Just, Since, Once/Twice, So far
● The
examples :1. (+) They have been here
since morning
(-) They have not been here since morning
(?) Have they been here since morning ?
Yes, they have
No, they have not
2.(+) He has borrowed your Japanese dictionary
(-)
He has not borrowed your Japanese dictionary
(?)
Has he borrowed your Japanese dictionary ?
Yes, he has
No, he has not
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