I don't know if I should help him with it.
=I don't know whether to help _him with it.
从句中if和whether在一定条件下可以互换,这边就可以His grandpa died five years ago.转化成_____five years___his grandpa____
I don't know if I should help him with it.转换成I don't know___ ___ ___him with it.
I don't know if I should help him with it.转换成I don't know___ ___ ___him with it.
今天就要选答案了
今天就要选答案了
英语人气：934 ℃时间：2019-09-02 09:31:35
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