新一輪中考復(fù)習(xí)備考周期正式開始,中考網(wǎng)為各位初三考生整理了中考五大必考學(xué)科的知識(shí)點(diǎn),主要是對(duì)初中三年各學(xué)科知識(shí)點(diǎn)的梳理和細(xì)化,幫助各位考生理清知識(shí)脈絡(luò),熟悉答題思路,希望各位考生可以在考試中取得優(yōu)異成績(jī)!下面是《2018初中英語語法之幾種常見時(shí)態(tài)的相互轉(zhuǎn)換》,僅供參考!
一、一般過去時(shí)與現(xiàn)在完成時(shí)的轉(zhuǎn)換
在現(xiàn)在完成時(shí)中,延續(xù)性動(dòng)詞能與表示一段時(shí)間的狀語連用,瞬間動(dòng)詞卻不能。但是,可用別的表達(dá)方式:①瞬間動(dòng)詞用于“一段時(shí)間 + ago”的一般過去時(shí)的句型中;②瞬間動(dòng)詞可改成與之相對(duì)應(yīng)的延續(xù)性動(dòng)詞及短語,與一段時(shí)間連用;③瞬間動(dòng)詞用于“It is + 一段時(shí)間 + since + 一般過去時(shí)”的句型中,表示“自從……以來有……時(shí)間”的意思,主句一般用it is來代替It has been;④瞬間動(dòng)詞用于“Some time has passed since + 一般過去時(shí)”的句型中。請(qǐng)看:
A. He joined the League two years ago.
B.He has been in the League for two years.
C. It is two years since he joined the League.
D. Two years has passed since he joined the League.
二、一般現(xiàn)在時(shí)與現(xiàn)在進(jìn)行時(shí)的轉(zhuǎn)換
在一般現(xiàn)在時(shí)中,at加上名詞表示“處于某種狀態(tài)”,如at work(在工作), at school(上學(xué)、上課)等。此短語可與進(jìn)行時(shí)態(tài)轉(zhuǎn)換。請(qǐng)看:
Peter is at work, but Mike is at play.
Peter is working, but Mike is playing.
三、現(xiàn)在進(jìn)行時(shí)與一般將來時(shí)的轉(zhuǎn)換
在現(xiàn)在進(jìn)行時(shí)態(tài)中g(shù)o, come, leave, start, arrive等動(dòng)詞常與表示將來的時(shí)間狀語連用表示將要發(fā)生的動(dòng)作。如:I am coming, Mum! 意為“我就來,媽媽!”請(qǐng)看:
The train is leaving soon.
The train will leave soon.
四、“be going to+動(dòng)詞原形”與“will(shall)+動(dòng)詞原形”結(jié)構(gòu)的轉(zhuǎn)換
“be going to+動(dòng)詞原形”、表示打算、計(jì)劃要做的事;將來時(shí)“will(shall)+動(dòng)詞原形”結(jié)構(gòu)在書面語中,當(dāng)主語為第一人稱時(shí),常用助動(dòng)詞shall。在口語中,所有人稱都可以用will。請(qǐng)看:
We are going to visit the Great Wall next Sunday.
We shall visit the Great Wall next Sunday.
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