If they had not helped us,we could not have done it so successfully的倒装句

来源:百度知道 编辑:UC知道 时间:2024/05/24 07:18:07
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Hadn't they helped us, we could not have done it so successfully.

if的倒装,就是把助动词提前,在这句句子里,助动词是had,并且,里面有一个助动词的否定形式,就是hadn't提前。
后面的句子照抄就可以了。

Hadn't they helped us, we couldn't have done it so successfully.

we could not have done it so successfully if they had not helped us