1.what we need is time 2.what we need are good doctors 这两句话为什么用what,what做什么成分这句话为什么不用that

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1.whatweneedistime2.whatweneedaregooddoctors这两句话为什么用what,what做什么成分这句话为什么不用that1.whatweneedistime2.wh

1.what we need is time 2.what we need are good doctors 这两句话为什么用what,what做什么成分这句话为什么不用that
1.what we need is time 2.what we need are good doctors 这两句话为什么用what,what做什么成分
这句话为什么不用that

1.what we need is time 2.what we need are good doctors 这两句话为什么用what,what做什么成分这句话为什么不用that
what 在主语从句中做宾语,that 不做句子成分,只起连接作用

额目测你高中？我上大学了高中的忘了是主语 that 不能做主语建议你在某些辅导书上去系统区别that. which. what. 最好是问老师我记得当年老师给我仔细讲了一次就没怎么错过了

what 在主语从句中做宾语，that 不做句子成分，只起连接作用

what we need 做主语，叫主语从句。 WAHT在这个主语从句中充当we need的宾语。

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1. what= the thing (that.....) ....的物
2.what=the person/people(who....).....的人
以上两个what都是英语中很常用的，本身作为先和引导词双重功效。再如；
他昨天买的东西。 what he bought yesterday =the thing that he bought yesterday
Mary不再是过去的Mary了
Mary isn't what she used to be =Mary isn't the person who she used to be.
故以上两句的成分都为主语，同时也是从句的宾语。当然它们也能作宾语，表语等。
相信你能理解赞同吧！祝你进步！

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