I think that it is important to master a foreign language.(改为同义句)I think _____ _____ ______ _______ a foreign language.important to master,可是还是不明白为什么,这涉及到什么形式主语、形式宾语之类的,我不太明白,

问题描述:

I think that it is important to master a foreign language.(改为同义句)
I think _____ _____ ______ _______ a foreign language.
important to master,可是还是不明白为什么,这涉及到什么形式主语、形式宾语之类的,我不太明白,

it是形式主语

it 做形式宾语且前置,真正的宾语应该是介词词组yo master a foreign language

作为形式主语或宾语的it并无实际语义,只是为满足语法上的需要,避免句子头重脚轻。原句I think that it is important to master a foreign language中,i是主语,think是谓语动词,think 后面接了一个that从句作宾语,句子的结构为主+谓+宾。that从句中,it作形式主语,真正的主语是后面的不定式短语to master a foreign language,还原主语就是to master a foreign language is important,is 是系动词,important是表语。同义句I think it important to master a foreign language中i还是主语,think还是谓语动词,只不过这时think有两个宾语,即双宾语(宾语+宾语补足语)。其中it作形式宾语,真正的宾语是后面的不定式短语to master a foreign language,important这时作为宾语补足语,补充说明宾语(to master a foreign language)的情况,这时还原就是I think to master a foreign language important。这时候句子的结构为主+谓+宾+宾补。

it important to master
it在这里是形式宾语 因为它在that后面 所以不是形式主语

原句I think that it is important to master a foreign language.的it是形式主语.
I think it important to master a foreign language.it是形式宾语
1.it做形式主语
It is +adj.+(for sb.) +to do sth.
It is time to do/for/that.
2.it做形式宾语

形式主语是指用it来代替一个比较长的主语(可以是主语从句、不定式等),避免头重脚轻。
如: To learn a second language is important. = it is important to learn a second language.
形式宾语是指用it来代替一个比较长的宾语(可以是宾语从句、不定式等),避免头重脚轻。
如:I find singing interesting.
i fing to play a joke on others interesting. 用一个it来代替“to play a joke on others”,然后把这个放在后面。变成:i fing it interesting to play a joke on others .
同样的:i think that it important to master a foreign language. it是形式宾语,真正的宾语是“to master a foreign language”
=i think that to master a foreing language important.