Don't you think____important to protect our earth?A that B how C it D this 为什么要选C?如果it是作形式宾语后面不是应该是 it is important to protect our earth.为什么是 it important to protect our earth

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Don't you think____important to protect our earth?A that B how C it D this 为什么要选C?
如果it是作形式宾语后面不是应该是 it is important to protect our earth.为什么是
it important to protect our earth

因为整句句子做think的宾语,所以省略掉了,如果是整句句子的话就需要加上that,即don't you think that it is important to protect our earth?

这里的it指代to protect our earth。当一些宾语有很短的修饰语(这里是important)而宾语自己很长时,往往用it做站位宾语,然后把真正的宾语放句子末尾,避免中间重尾巴轻的问题。

英语是型合语,在此问句中think为谓语,it作形式宾语,真正的宾语是to。。。;而陈述句it is important to protect our earth. 中it作形式主语,其后必需有谓语动词is.

同意3楼的。Don't you think 后面跟的并不是一个宾语从句,只是一个结构:think it +形容词 + to do it是形式宾语, important 是宾补 ,to do真正的宾语。