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被动 一般式
(not)to do
(not)to be done 进行式
(not)to be doing
(not)to be being done 完成式
(not)to have done
(not)to have been done 二。不定式所作的成分 1. 作主语
eg: To go abroad is my dream. To be taken abroad is my dream. 不定式短语作主语时, 往往放在谓语之后, 用it作形式主语. 句型: It is/was +adj.+ of sb. to do sth. (用of 的adj: rude, cruel, clever, stupid, foolish等) for sb. (用for的adj: possible, important, necessary, hard等) It is/was + n. + (for sb.) to do sth. eg:
It’s stupid of you to do such a thing.
It’s impossible for me to finish the work today.
It’s a rule for the students
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