I'll do what I can( )you when you are in trouble.

来源：学生作业帮编辑：百度作业网作业帮分类：英语作业时间：2024/06/25 23:23:29

I'll do what I can( )you when you are in trouble.
A.to help B.help
问：为什么不能选B?
请用语法解释

答案：A
解析：这句话中的what I can 是宾语从句,而to help是动词不定式作目的状语,如果选B,那就不是动词不定式了,整个句意也不通顺了.而且前面的I'll do what 也是多余的了,总之句子很不通顺.只有选A才是正确答案,试着翻译一下就明白了.
翻译：当你遇到麻烦时,我会尽我所能来帮助你.
再问：为什么不能选B 翻译为：在你烦恼的时候我将会做我能帮助你的事情。怎么不对了？
再答：其实完整的句子是I'll do what I can do to help you when you are in trouble. can 后面有个do，只不过是省略了，所以不能看成是...what I can help you...了
再问： what I can help you不就是省略的部分吗？不也是成立的吗？
再答： what I can help you 不能看作是省略的部分，如果省略了，你也不会想到这种情况了。另外如果是I'll do what I can help you when you are in trouble. 这句话也不通顺，一般不会这样说话吧，我会做我能帮助你的事情，都是说我要尽可能地来帮助你。而且你的这种假设似乎也不符合语法习惯，这个句子是宾语从句，what 引导的宾语从句，在从句中作宾语，如果像你说的那样，help you已经有宾语you了，怎么还会用what引导？如果像你所说，这个what在从句中是作什么成分呢？

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