Perfect to have + Participle II .
Participle II - 3 , ed . Participle II . Perfect , , . Present Perfect , .
Perfect , .
, . , , .
We have understood the teachers explanation.
.
He has brough t the book to the library.
.
Present Perfect
We have built a new house. .
- - . - Present Perfect.
Present Perfect to have ( have has) Participle II - (3 ) - .
Present Perfect, .
1) :
We have finished our work. .
2) , , : this year (month, week), , :
always never
ever - seldom
often just
not yet
We have finished our work. .
I have never seen him. .
, , Perfect .
:
She has come. .
She has never come in time. .
I have started the motor. .
He has written exercises today. .
We have just spoken about you. .
Present Perfect to have Present Simple + Participle II .
Past Perfect
Past Perfect , , : after, when, before.
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:
1) , (, , by);
2) , .
We had made our experiment by five p.m.
5 .
We had made our experiment before the professor came (before the professors coming).
, ( ).
Future Perfect
Future Perfect , . , , .. by ().
They will have made their experiment by 7 oclock.
.
They will have made their experiment before the professor comes.
, .