the question is so difficult that I can't answer it.同义句他的同义句是The question is too difficult for me to answer.为什么第一句要在answer后面加上it?
问题描述：
the question is so difficult that I can't answer it.同义句
他的同义句是
The question is too difficult for me to answer.
为什么第一句要在answer后面加上it?
答
so...that..结构，that在这里不是指代question，而是“因此”的意思
答
第一句中的it在从句I can't answer it.中做宾语
答
因为第一句answer前面的主语是I
第二句question做了主语
答
及物动词后面必须接宾语呀