先行词it作形式宾语

有时由于宾语太长，常用it 作为先行宾语，而把真正的宾语放到句子后部。这种情况在复合宾语中尤为常用。

1）it 代表后移的不定式
* I don't feel it difficult to understand him. 我觉得听明白他讲的话并不难。
* She found it hard to make good friends there. 她发现在那儿很难交到好朋友。
* Better technology makes it possible to produce more crops in the farm. 更好的技术使农产品增加成为可能。
* He made it a rule to study in the early morning. 他让早起学习成为自己的惯例。

2） it 代表后移的宾语从句
* The headmaster has made it clear that the school meeting will not be put off. 校长说得很清楚校会不会推迟。
* I take it for granted that you will win the first prize. 我认为你获一等奖是理所当然的事。
* He hasn't made it clear when he is coming back. 他没有说明他什么时候回来。
* I take it that you have been out. 我以为你一直出门在外。
* You can put it that it was arranged before. 你可以说这是以前安排的。
* I hate it when people talk with their mouths full. 我讨厌人们一边吃饭一边说话。
* I like it when the weather is clear and bright. 我喜欢晴朗的天气。

3） it 代表后移的动名词
* They took it their duty taking good care of the wounded soldiers. 他们认为照顾好伤病员是他们的责任。
* I found it no good arguing with him. 我发现和他争论没有用。
* I think it very unwise going on like this. 我认为这样进行下去很不明智。