动词不定式的被动语态的用法 动词不定式的被动完成时态？

动词不定式的被动语态的用法

动词不定式的被动完成时态？

动词不定式的被动完成时态？

　　1.表示被动关系时，当不定式的动作先于谓语时，可用不定式的被动式的完成时：to have been done；与谓语同时进行时，要用不定式的被动式的进行时：to be being done。
如：
　　The dead woman is said to have been badly treated.据说死去的妇女受虐待。
　　Rainforests are reported to be being cut down rapidly.据报道雨林正被迅速地砍伐。
　　2.不定式的主动式作含序数词的被修饰词语的定语时，可表示已完成的动作。如：
　　He was the first man to taste the tomato.他是第一位品尝西红柿的人。
　　They were the last to leave the countryside.他们是最后一批离开农村的。
3、完成态不定式，形式为[to have done]，强调已完成状态。
He pretended to have lost her number and so had been unable to contact her. 他假装丢了她的号码
She claims to have met a number of famous people, but I dont believe her.
We hope to have finished the building works by the end of March.
To have got the job in the face of such stiff competition was a great achievement. 在如此激烈的竞争中
To have won the race would have been fantastic, but even coming second was a great achievement. 即使获得第二名也是一项伟大成就
By tomorrow, I want those books to have been read. 完成态的被动

动词不定式是什么，它是什么意思？

在语法中，动词不定式是指动词的一种不带词形变化从而不指示人称、数量、时态的形式。它之所以被叫做不定式，是因为动词不被限定，或者说不被词形变化所局限。不定式属于非谓语动词。　　在外语学习的课程中，动词不定式的一般现在时被称作