Present Perfect Tense

1. Pattern : S+Have/Has+Verb3+...
Dalam : Kalimat positif.
(I, You, We, They)+have+verb3
Contoh :
~ i have eaten already (saya sudah makan).
~ you have written the letter already.
~ we.hve studied the lesson.
~ they have gone to Bali three times.

(She, He, It)+has+verb3
Contoh :
~ Tom has drunk already (Tom sudah minum).
~ Susan has come.
~ My cat has slept.
~ My father has just arrived.

Dalam kalimat tanya :
~ have you eaten? (sudahkah kamu makan?)
~ have i written?
~ have we studied?
~ have they gone to Bali?

Has+(She, He, It)+Verb3
Contoh :
~ has he drunk?
~ has she come?
~ has she slept?
~ has he arrived?
Dalam kalimat negative :
~ i haven't eaten yet (saya belum makan).
~ you haven't written the lettter yet.
~ we haven't studied the the lesson yet.
~ they haven't gone to Bali.

(She, he, it)+has+not+verb3
Contoh :
~ he has not drunk yet (dia belum minum.
~ she has not come.
~ it has not slept.
~ he has noy arrived yet.

2.
Since(sejak)/For(selama)
Since
Three o'clock(jam)
Yesterday afternoon
Last week
1960(year)
December(month)
Monday(day)
Contoh :
~ i have brushed my teeth since six o'clock.
~ they have played foot ball since this morning.yy
~ we have worked since last week.

For
Three hours(jam)
Two days(day)
A week(seminggu)
Two month(2 bulan)
Three minutes (menit)
Contoh :
~ he has listed to the radio for two.hours.
~ she has lived here for five month.
~ the cat has sat on the floor long time.