连接词的选择

Lily ，how to keep ourselves safe from the novel coronavirus?

All ____ we can do for the movement is to wear masks, wash hands frequently and exercise regularly.

选项有what that how,答案是that，为什么不能选what？

all在这里是代词作主语，后接定语从句，所以需要关系代词that引导定语从句。what引导的是名词性从句，不能作定语。

曹荣禄 -

擅长：动词用法,句法问题 | 采纳率 82% | 回答于 2021-04-17 08:53

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