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having done 与done在非谓语动词中区别

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/12 07:58:46
having done 与done在非谓语动词中区别
having done 是主动语态.
done是被动语态
时间都发生在过去,已经发生了.
如:①After having finished his task,he went to bed.
(主语是he,是主动语态,已经发生了)
②Heated(加热),water changes into steam(蒸汽).
(主语是water,水是被加热的,被动语态,已经发生了)
如果不明白的话,可以问我!