After (do) her homework, she watched TV
nên chia doing hay having done đây
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1. Before she had watched TV, she had done her homework.
=> Had watched thành watched
2. Tom was seeing an accident while he was standing at the bus stop.
=> Was seeing thành saw
3. I read this novel several times.
=> Read thành have read
4. My mother sometimes buy vegetables at this market.
=> Buy thành buys
1.' What did you do last night?' ' I watched TV,practiced the violin, and.... my homework.'
a. do
b. did
c. done
d. doing
1.' What did you do last night?' ' I watched TV,practiced the violin, and my did homework.'
1.Before she (watch) has watched Tv, she (do) has done her homework .
2.After they had gone,I(sit) have sat down and (rest) have rested.
Chuyển các câu sau sang khẳng định
1,Was Giang doing her homework at 8p.m yesterday?
-> Giang was doing her homework at 8p.m yesterday.
2,will Giang do her homework at 8p.m tomorrow?
-> Giang will do her homework at 8p.m tomorrow.
3,did Giang do her homewok last night?
-> Giang did her homewok last night.
4,Has Giang done homework last night?
-> Giang has done homework last night.
had done .
Công thức:
❄ Before + S + V2, S + had + V3.
❄ After + S + V3, S + V2.