【英语语法】现在完成进行时，一个表格就看懂！
现在完成进行时
即学即练
用括号内动词的正确形式填空。
1. Alan ________ (read) this book for two hours, but he hasn’t finished it.
2. Hank _________ (learn) a great deal since he came to this school.
3. I ________ (knock). I don’t think anybody is in.
4. I ________ (clean) the windows. Let’s go out to play.
5. The experts ________ (discuss) this problem this year.
6. You ________ (say) that for five years. It’s meaningless.
7. In the last few years a few more buildings ________ (build) in the town.
8. Tom ________ (act) since he was 8 years old.
答案
1. has been reading 2. has learnt
3. have been knocking 4. have cleaned
5. have been discussing 6. have been saying
7. have been built 8. has been acting
以上内容选自《英语周报》，转载请注明出处。
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