形式主语 it should be avoided to do sth.

形式主语 it should be avoided to do sth. it作形式主语的问题it 作形式主语的句型是 it + be动词,还是it + 谓语动词? 形式主语it+be+adj+that.则么用?咋么翻译? 比如it must be obvious中的it就是形式主语那么it is good也是形式主语吗?如何区分it是不是形式主语? 主语从句Which should be chosen remains unknown.可否改为It remains unknown which should be chosen. there be的there可以做形式主语吗?我们老师这么说只有it可以做形式主语呢? 什么时候我用形式主语?非要it be that的形式吗. 主语从句It + be + 形容词 + that从句:be用什么形式? It's just like him to be so rude!这里it是形式主语吗? be worthwhile前面是不是只能填形式主语IT?好像没看过不用IT的例子 it做形式主语造句 It should be noted Should it be controlled? should it be accepted it should be more7 be+adj+to do sth是不是都用it做形式主语?动词不定式做宾补吗? That could be a good way to help.为什么不用It,那不是形式主语吗 you should ___(be) in the kitchen and clean it.用正确形式填空