Question

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...
不懂啊~~~请教高人~~~~~谢谢~~~~

Answer 1

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。

Answer 2

listening不是宾语吧。。。。to improve 做状语吧 目的状语
be told to do固定搭配
she likes to do宾语
it is形式主语 important修饰形式主语 to look into the world还是状语吧。。
反正不定式除了谓语 主宾定状补都可以做