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
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

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。