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问题: 关于反意疑问句

1.No one was there,_______?
A. was there B.wasn't there
C. was he D.wasn't she
Why choose C not A?

2.We have to get there before seven,_______?
(haven't we, don't we )And pleasa tell me why

3.we must help each other,_______?
(don't we, mustn't we )

4.He said he would come,______?
(wouldn't he, didn't he )

解答:

1因为主语是ONE,表示的是人
2don't we ,这里的have是情态动词
3don't we,同上
4wouldn't he