标题 | after doing的用法总结 |
范文 | 1.after作连词使用时,连接两个从句。语法结构为“B happened after A happenen"或”After。 A happened,B happened.",它们含义一样,都是指“A事件首先发生”,一定要注意第二个结构中的“,"。 I went to America after I left school. After I left school,I went to America.我离开学校后,我去了美国。 He did military service after he went to university.(=He went to university first.)我上完大学后,我去参军了。 After he did military service,he went to university.(=He did military service first.)我参军完后,我去上了大学。 2.after用作连词,引导状语从句时通常用现在时表示将来的含义。如: I'll telephone you after I arrive.(NOT...after I will arrive.) 我到达后将打电话给你。 3.after引导的从句,我们习惯用完成时态。一般用现在完成时(have+过去式)代替现在时,用过去完成时(had+过去式)代替过去时。 I‘ll telephone you after I've arrived我到了后打电话给你。 After I had left school,I went to America.我离开学校后,我去了美国。 【注】在状语从句中,用完成时态和用其他时态并没用很大区别,只是我们习惯用完成时态强调”某件事情在另外一件事情开始时已经完成”。 4.在正式用语中,我们也常用“after+V-ing"结构。 After completing this form,return it to the director's office.完成这份表格后,把它交到行政办公室。 He wrote his first book after visiting Mongolia.他参观完蒙古后,写了他的第一本书。 1. 用作连词时,它所引导的时间状语从句通常要用一般现在时来表示将来意义(若强调完成也可用现在完成时),但不能直接使用一般将来时。如: 请告诉她我买些东西就回来。 误: Please tell her I’ll come back after I will do some shopping. 正:Please tell her I’ll come back after I do [have done] some shopping. 2. 一般说来,如果在过去某一时间内先后发生了两个动作,那么先发生的动作用过去完成时,后发生的动作用一般过去时。但是若用了连词 after 来连接这两个动作,由于 after 本身已说明了两个动作的`先后关系,所以两者均可用一般过去时。如: After he (had) closed the door, he left the house. 关了门之后,他就离开了家。 3. 有时以连词 after 引导的时间状语从句可以换成一个以介词after 引导介词短语或以连词 after 引导的分词短语,而意义不变。如: He went to bed after he had supper (=after supper). 吃了晚饭之后,他就上床睡觉了。 After she (had) finished (=After having finished / After finishing / Having finished) her work she left theoffice. 她干完活后就离开了办公室。 上一篇:able后缀的单词6个 下一篇:most后缀的单词有哪些 |
随便看 |
|
范文网提供海量优质实用美文,包含随笔、日记、古诗文、实用文、总结、计划、祝福语、句子、职场文档等范文,为您写作提供指导和优质素材。