III/ PRESENT PERFECT TENSE ( Thì hiện tại hoàn thành )
1. Ba has collected stamps since 1995.
Stamps
2. We have finished all the assignments already.
All the assignments
3. Some robots have performed a lot of difficult duties so far.
A lot of difficult duties
4. No one has taken him to the theater.
He
5. Daisy has never met this man before.
This man
6. They have just introduced a new kind of iphone in the USA.
A new kind of iphone
7. Police have caught the thief recently.
The thief
8. Nam has helped Lan with her homework since 2 o’clock.
Lan
9. Has your father repaired the car yet ?
Has the car
1. Ba has collected stamps since 1995.
Stamps have been collected by Ba since 1995
2. We have finished all the assignments already.
All the assignments have been finished already
3. Some robots have performed a lot of difficult duties so far.
A lot of difficult duties have been performed by robots so far
4. No one has taken him to the theater.
He hasn't been taken to the theater
5. Daisy has never met this man before.
This man has never beeen met by Daisy
6. They have just introduced a new kind of iphone in the USA.
A new kind of iphone has just been introduced in the USA
7. Police have caught the thief recently.
The thief has been caught by police recently
8. Nam has helped Lan with her homework since 2 o’clock.
Lan has been helped with her homework by Nam since 2 o’clock.
9. Has your father repaired the car yet ?
Has the car been repaired by your father yet?
