had better ought to有没有被动形式

还有关于被动语态的所有语法

had better be done
ought to be done
(1) am/is / are+及物动词的过去分词 ,体现一般现在时的被动语态
eg. English is spoken in their country.
(2) was/were +及物动词的过去分词 ,体现一般过去时的被动语态
eg. Our school wasn’t built in 1990.
Were the trees planted by him?
(3) will /shall+ 及物动词的过去分词,体现一般将来时的被动语态
eg. A: I shall send my boy to school next September.
P: My boy will be sent to school next september.
(4) would/should +及物动词的过去分词,体现一般过去将来时的被动语态
(5) have/has +been done, 体现现在完成时的被动语态
eg. A: We have studied English for nine years.
P: English has been studied for nine years by us.
(6) had + been done, 体现过去完成时的被动语态
eg. A: They had produced 100 cars by the end of last year.
P: 100 cars had been produced by the end of last year.
带情态动词的被动结构
其形式为:情态动词+be+动词过去式
• Can, could/ will,would/ shall, should/ may, might/ must/ ought to/ need/ have to
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第1个回答  2010-09-23
他们是没有被动形式的。只能说它们后面接被动形式。

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