标题 | after class是什么时态的标志 |
范文 | after几种用法: 一、after作介词的用法: 1.after+名词,作为介宾短语, 如:after 5 o'clock。五点以后。 He ran after the bus.他在那辆公交车后追着跑。 2.after+动名词,也是作为介宾短语, 如:after having finished my homework。完成我的作业后。 I will go to bed after drinking the milk. 3.after+代词,作为宾语的主语, 如:He went home after he finished all the work 二、after做副词的用法: 如:three hours after三小时后; He told me after that he had not enjoyed the film.他告诉我后来他一点都不想看电影。 三、after做连词的用法: 如:I saw them after I arrived.我到了之后才看到他们。 用作连词引导时间状语从句时注意:若主句用将来时态(或含有将来意味),则时间状语从句要用一般现在时态 (表将来意义)表将来意义,而不能直接使用将来时态:他回来后我就走。正:I’ll leave after he comes back.误:I’ll leave after he will come back. after前后时态 1、遵循“主将从现”原则。 如:He will go to Beijing to work after he graduates from the university. 他大学毕业后将去北京工作。 2、从句表示的`动作发生在主句动作之前,如果强调从句的动作发生在前,从句谓语要用过去完成时,主句用一般过去时。 如:He went out for a walk after he had finished the work. 他完成这项工作后他出去散步。 3、从句表示的动作发生在主句动作之前,如不强调动作的先后,主句和从句均用一般过去时。 如:He went to bed after he finished his homework last night. 昨晚他完成作业后上床睡觉。 上一篇:pine的形容词 下一篇:have been是什么时态什么语态 |
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