It代替不定式短语时:He feels it his duty to help others.他觉得帮助他人是他的责任。 The new medicine makes it possible to treat this terrible disease.这种新药使治疗这种可怕疾病成为可能。
扩展资料
It 代替动名词短语时:
We thought it no use doing that.
我们认为那样做无济于事。
Our teacher thinks it no good learning without practice.
我们的老师认识光学不实践是没有好处的。
It 代替宾语从句时:
I think it very important that we take part in the discussion.
我认为我们参加这次讨论是很重要的
Didn't I make it clear to you that I was not coming?
我不是向你明确表示过我不来了吗?
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