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has lived
_____ you _______(visit) our factory yet?
Have visited
3. I’m sorry I __________(keep) you waiting for such a long time.
have kept
4. I ___________ (not see) you for a long time. You ____________(change) a lot.
haven’t seen
have changed
5. He __________(know) the city since he was very young.
has known
活动指导：老师说Start后，每组2号举手抢答，答对加1分,组长负责记录本组的得分并在下课后算出本组最终得分！
Present perfect tense
现在完成时
We use the present perfect tense to talk about:
动作发生在过去并且持续到现在.
2. 动作发生在过去并且和现在有一定的联系.
3. 谈论一个动作到目前为止发生了多少次.
Sentence structure 构成:
have/has +done(过去分词)
Tower Bridge
The Sydney Opera House
The Statue of Liberty
The London Eye
I have been to Hong Kong Disneyland twice.
She has gone to the UK and she will come back in two months.
Using have/has been
More examples:
1. Mille and Amy have been to South
Hill. They want to go there again.
2. Sandy has never been to South