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it 可作形式宾语吗?如果可以,请举例说明.

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it 可作形式宾语吗?如果可以,请举例说明.
可以的
例如:It 代替不定式短语时
1.He feels it his duty to help others.
(他觉得帮助他人是他的责任.)
2.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.)
It 代替动名词短语时:
1.We thought it no use doing that.
(我们认为那样做无济于事.)
2.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:
1.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.)
2.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?)