Present Perfect Tense (I have done)

Present Perfect Tense adalah bentuk waktu yang digunakan:

Menyatakan pengalaman (Experience)]
MEnyatakan suatu perubahan atau informasi terbaru (Change and new information)
Menyatakan suatu situasi yang berkelanjutan (Continuing situation)

Rumus Verbal:
(+) S+have/has+V3+O
(-) S+have/had+not+V3+O
(?) Have/has+S+V3+O

Examples :
(+) I have eaten twice a day.
(-) I have not eaten twice a day.
(?) Have I eaten twice a day?

(+) He has already learnt grammar.
(-) He has already not learnt grammar.
(?) Has he already learnt grammar?

(+) Nina and Nino have just sung a west song.
(-) Nina and Nino have not just sung a song.
(?) Have Nina and Nino just sung the song?

Non-Verbal Rumus
(+) S+have/has+been+Complement
(-) S+have/had+not+been+Complement
(?) Have/has+S+been+Complement

Examples :
(+) Mrs. Diana has been here since 7.15 am.
(-) Mrs. Diana has not been here since 7.15 am.
(?) Has Mrs. Diana been here since 7.15 am?

(+) We have been at home for 8 months
(-) We have not been at home for 8 months
(?) Have we been at home for 8 months?

(+) The teacher has already been ready for the students' exam.
(-) The teacher has not already been ready for the students' exam
(?) Has the teacher been ready for the students' exam?

Adverb of Time of Present Perfect Tense:

once
twice
three times
many times
several times
this week
already
just
not yet
as yet
so far
up to the present time
lately
recently
finally
at last
since yesterday
since
for an hour
for two years
never
ever

Present Perfect Tense (I have done)

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