2016考研英语基础语法大全：非谓语动词（3）

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动词非谓语形式有以下几种形式变化(以write为例)：

形态	主动	被动
动词不定式	一般	To write	To be written
进行	To be writing
完成	To have written	To have been written
完成进行	To have been writing
现在分词和动名词	一般	Writing	Being written
完成	Having written	Having been written
一般		written