英语语法问题1What is important is to learn English2What you have d

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英语语法问题
1What is important is to learn English
2What you have done might do harm to other people.
what is important is to learn English这种形式的,两个is.
2What you have done might do harm to other people是不是这个句子的done和might相当于那两个is,用法是一样的?done充当着动词成分,让句子完整,might充当着谓语的成分?

第一个is是主语从句里（在复合句中起主语作用的从句叫主语从句）的谓语,第二个就是这个句子的谓语have done是主语从句的谓语,（might） do,是整个句子的谓语.

再问：我想问1.what is important里面的is 和what you have done里面的have done在句子里充当的部分是一样的，都是要让句子有动词，构成主语从句？ 2.而后面的might do 和第一句话里的is用法也是一样的，就是为了使句子有谓语的成分？
再答：是的，这2个是从句里的谓语成份。might do和is是充当谓语的作用。

英语语法问题1What is important is to learn English2What you have d ——important it is to learn English well!A.what B.So C.How D. It is important for you to learn to speak English It is vert important for you to learn to drive 一个语法问题 which is most important to you in deciding what to bu 英语语法问题What is the first American film that you have seen .这句 it is important to learn English It is important ______us to learn English. It is important to us (learn)English to learn English well is important how important it is to learn English. To learn English is important and useful.