to have done的用法和意思
to have done的用法和意思 详解与have done的区别
to have something done是指做好某事,但这事不是你自己做的,如理发修车等事 时态\语态 主动 被动 一般式 to do to be done 进行式 to be doing 完成式 to have done to have been done 完成进行式 to have been doing 完成时:表示的动作发生在谓语动词表示的动作之前。 I'm sorry to have given you so much trouble. He seems to have caught a cold. 完成进行时: She is known to have been wreaking on the problem for many
to have something done是指做好某事,但这事不是你自己做的,如理发修车等事。
问:instructions 和directions 都有"说明"的意思,用法有区别吗?
答:introduction表示:1。引导,传入;2。介绍;3。导言,绪论;4。入门(书);强调介绍的性质多些; direction表示:1。方向,方面;2。指导,...详情>>
答:分数很低的。总分是450分,有的学校考100多分就行了。 专科起点升本科统考科目均为三门。 两门公共课为政治、外语;一门专业基础课。根据招生专业所隶属的...详情>>