题目

这些不定式在句子中充当什么成分啊?
I find it hard to improve listening.为什么listening是宾语啊?不定式在这里作什么成分的?
I was told to drive the car carefully.为什么carefully是状语啊?不定式在这里作什么成分的?
还有好多象这样的句子啊:she likes to play the piano.
It is important for us to look into the world.那Important在这作什么成分的?for us呢?还有to look...

提问时间：2020-07-18

答案

it hard to improve listening 是省略句,做 find 的宾语.to improve listening 不定式是省略句的实际主语,it 是省略句的形式主语.整个句子还原是：I find (that) it (is) hard to improve listening.省略句主语还原是：I find (that) to improve listening (is) hard.
to play the piano 是 likes 的宾语.
important 做表语.for us 行为人（主语）.to look.是整个句子的实际主语,it 是形式主语.