Do what you can to help him. 这里的what you can 是宾语从句为什么不是 what you can do 呢

来源：百度知道编辑：UC知道时间：2024/05/16 05:19:27

这句话的主结构是：Do sth. to help him.
中间加上what you can 替换sth.

Do what you can do to help you. 也是正确的，
只是后来省略了。

你也说了是宾语从句啦，但看看哦，这不是一般的宾语从句。是一个夹杂省略的宾语从句。补完的话可以是：You should do what you can to help him！do后面引导的是一个疑问代词开头的宾语从句：what u can。to help him是一个跟在do后面的不定式，和宾语从句没关系。这里省略了主语，起到祈使和强调的作用。所以，你说what you can do to help him就说不通啦，宾语从句是由动词后面跟着一句正常语序的句子。
ps：这种句子你就背下来吧，一直考到的。换汤不换药，知道原理，不用深究。

省略，否则和第一个Do重复了～当然不省略也行，这么省略感觉好别扭……

在这个宾语从句之中 what充当的是宾语成分
等于 all the tings that
也就是说what既充当关系代词又充当先行词
楼上的说的是对的这种省略在语法中式存在的

表示强调

What can I do to make it up to you ？ what can you do?? what can you do to stop prejudice and racism? What can you do to make such calls easier? what can you do to protect the enviroument? What are you going to do at the weekend?What do we need?What about....?Can you bring...? What do you think we can do to protect our environment? What you must ,mustn't or can do when you speak to an American 。What can I do to make them up to you ? You mean a lot to me in my life翻译 What do you do to keep fit?

Do what you can to help him. 这里的what you can 是宾语从句 为什么不是 what you can do 呢

Do what you can to help him. 这里的what you can 是宾语从句为什么不是 what you can do 呢