主语从句What we need is some news.中的what 可不可以改用which?为什么?

主语从句What we need is some news.中的what 可不可以改用which?为什么? 关于主语从句what we need is time其它形式可以写成it is time what we need还是it is time that we need呢?还是两句都可以或者都不可以?为什么?第二句算是形式主语It引导的主语从句吗? 英语写作当中可以用到哪些主语从句.例如 it is no use doing sth.what we need to do now is that--- 什么是主语从句,What we need is money ,we不就是主语吗,怎么还变成从句了?复制一堆的滚,我查了两个小时,到现在还不懂这什么意思,引导词起什么作用? 改主语从句What to do is the first question we have to answer是改成主语从句,不是翻译... What we need are good doctors.为什么谓语是are而不是is,主语是waht啊 what we need is a what 引导主语从句时应注意其所指的具体内容来确定谓语的单复数 为什么 what做主语时谓语不就用单数吗具体解释 谢谢 What we need is more time ,while what they need are more doctors and medicines What we need is more time这个what具体什么含义,英语真是麻烦,不可以直接说we need is more time? It is doesn't matter whether I win or not这里whether什么含义? 顺便帮我通俗解释一下主语从句,非常感谢! Raw material is what we are badly in need of.It is raw material that we are badly in need of这两句有什么区别,各是什么从句? 英语达人进!主语从句的疑问举个例子：What you need is a good meal.这个主语从句中去掉what以后是：You need is a good meal.这句话里面是is缺少主语吗?如果改成You need a good meal.那么这句话完整不完整? 英语达人进!主语从句的问题举个例子：What you need is a good meal.这个主语从句中去掉what以后是：You need is a good meal.这句话里面是is缺少主语吗?如果改成You need a good meal.那么这句话完整不完整? What would be great is if...What would be great是主语从句,what是主语从句的主语? 主语从句中的注意事项：改错 1.when we shall have our sports meeting （hawe） not been decid2.What I need （are） money.3.What you need（is）book.4.When they will start and where they Will go (has )been decided.5.When and where the m 宾语从句的连接词做主语例句：we have to check what is in it .为什么这里不用陈述语序 I think what you also need is just a vacation.主语连词为什么用what啊?这是一个宾语从句+主语从句的句子.但是我问题不是这个还有很多诸如此类的主语从句.为什么用what不用that.还有,有没有 从句是疑 英语语法,主语从句what he likes is playing chess after supper.是主语从句吗?为什么? this is what we learns是什么从句