非谓语having done的用法
扩展资料
(1)having done 是非谓语动词中现在分词的完成式。与现在分词一般式doing 相比,doing表示的动作或状态往往与句子谓语动词表示的'动作或状态同时发生,而having done 强调在谓语动词之前发生。having done 通常在句中作状语,表示句子主语发生的动作或存在的状态,与主语是主动关系。
(2) having done 作状语,可以变成相应的完成时的状语从句。
(3) having done 的被动式为:having been done, 与句子主语之间是被动关系。
例句:
Not having had anything for the whole day, he wolfed down three bowls of rice。
Having seen him before, I know what he is like。
Having graduated from high school, he became a journalist。
The USA is a developed country。
The problem discussed yesterday was how to use the sixteen tenses in English。