after幾種用法:
一、after作介詞的用法:
1.after+名詞,作為介賓短語(yǔ),
如:after 5 o'clock。五點(diǎn)以后。
He ran after the bus.他在那輛公交車(chē)后追著跑。
2.after+動(dòng)名詞,也是作為介賓短語(yǔ),
如:after having finished my homework。完成我的作業(yè)后。
I will go to bed after drinking the milk.
3.after+代詞,作為賓語(yǔ)的主語(yǔ),
如:He went home after he finished all the work
二、after做副詞的用法:
如:three hours after三小時(shí)后; He told me after that he had not enjoyed the film.他告訴我后來(lái)他一點(diǎn)都不想看電影。
三、after做連詞的用法:
如:I saw them after I arrived.我到了之后才看到他們。
用作連詞引導(dǎo)時(shí)間狀語(yǔ)從句時(shí)注意:若主句用將來(lái)時(shí)態(tài)(或含有將來(lái)意味),則時(shí)間狀語(yǔ)從句要用一般現(xiàn)在時(shí)態(tài) (表將來(lái)意義)表將來(lái)意義,而不能直接使用將來(lái)時(shí)態(tài):他回來(lái)后我就走。正:I’ll leave after he comes back.誤:I’ll leave after he will come back.
after前后時(shí)態(tài)
1、遵循“主將從現(xiàn)”原則。
如:He will go to Beijing to work after he graduates from the university.
他大學(xué)畢業(yè)后將去北京工作。
2、從句表示的`動(dòng)作發(fā)生在主句動(dòng)作之前,如果強(qiáng)調(diào)從句的動(dòng)作發(fā)生在前,從句謂語(yǔ)要用過(guò)去完成時(shí),主句用一般過(guò)去時(shí)。
如:He went out for a walk after he had finished the work.
他完成這項(xiàng)工作后他出去散步。
3、從句表示的動(dòng)作發(fā)生在主句動(dòng)作之前,如不強(qiáng)調(diào)動(dòng)作的先后,主句和從句均用一般過(guò)去時(shí)。
如:He went to bed after he finished his homework last night.
昨晚他完成作業(yè)后上床睡覺(jué)。