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03 Use
Meaning:
01
动作从过去持
续到现在
动作是过去
做的,但强调对现在造成的影响
动作从过去到现在做了多少次
02
03
Form:
have/has done
Use:
和哪些词连用
just
since
for
ever
yet
already
never
recently
Exercise 1:
1. I ________(have) lunch already.
2. _____ the train_______ (arrive) yet?
3.Tom ____ never_______ (be ) to China.
4. He ______just _____(see) my father.
5. The twins ________ (keep) the book
since last week.
6. We ___________ (build)many tall buildings over the past 5 years.