1、(完整版)what引导主语从句的用法What引导名词性从句的用法一。引导主语从句1)What we need is more time.(what做need的宾语)我们所需要的是更多的时间.2)What really matters is that she wore a pair of whiteshoes。（what做matters的主语)真正麻烦的是她穿了一双白鞋.二。引导宾语从句1)People were perhaps more honest a long time ago when life was very different from what it is today。(what
2、做从句中is的表语）很久以前当生活与现在的生活完全不同时，人们或许更诚实.2)People have heard what the President has said；they are waiting to see what he will do.（what分别做动词heard和see的宾语)人们已经听到了总统所说的；他们正等着看总统会做什么.三.引导表语从句1)Whether ways will be found to stop pollution or not is just what worries the public.（what做从句中的主语）是否能找到阻止污染的方法就是所令民众担
3、心的事儿。2)That is what I want to tell you。（what做从句中的宾语)那就是我想告诉你的事儿。3）The little girl is no longer what she used to be.(what做从句中的表语)这个小女孩不再是过去的样子了.四.引导同位语从句1)They have no idea at all what he is working on.(what做从句的宾语）他们一点儿都不知道他正在做什么.2)You have no idea what I suffered.（what做从句的宾语)你不知道我所遭受的痛苦.通过以上例句及解释我们可
4、以得出:what常用来引导名词性从句，即主语从句，宾语从句，表语从句和同位语从句。what在引导名词性从句时有两个重要的特点：一是它在相应的名词性从句中一定有含义，常表示“什么”，“所的”，“的样子”等。二是它在相应的名词性从句中一定做成分，而且常做主语，宾语或表语。练习：1.It is not yet pretty well understood_made the rainforest disappear year by year。A.that B.when C.what D.how2。The word media basically refers to_we commonly call n
5、ewspapers，magazines,radios and televisions.A.which B.what C.why D。how3.Its well understood _controls the flow of carbon dioxide in and out of the atmosphere today.A.that B.what C。how D.whether4。The small mountain village_we spent our holiday last month lies in_is now part of Hubei.A.which；where B。where；what C。that；which D。when；which5。The reason why he was late was_he had taken a wrong bus。A。because B.whether C.what D.that答案：CB B BD
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