广东省增城市小楼中学八年级英语上册 module 3 culture and history unit 6 ancient stories language课件 (新版)牛津深圳版
23页1、Language,The present perfect tense,现在完成时,表示过去某一动作对现在造成的影响 过去某一动作持续到现在(可能会持续下去),past,now,future,I have lost my watch.,He has not seen this kind of food in his country.,They havent come back.,表示过去某一动作对现在造成的影响,影响,(We cant find them.),(He is surprised when he tastes it.),(I dont know the time.),past,now,future,I have lived here since I came here.,She has been in Canada for seven years.,过去某一动作持续到现在(可能会持续下去)常与since和for连用,表示持续动作或状态的词应是延续性动词.,肯定式 S + have / has + pp.,否定式 S + have / has not + pp.,疑问式 Hav
2、e / Has + S + pp.?,Form of the Present Perfect Tense,回答 Yes, S + have/has. / No, S + havent/hasnt.,1. 规则动词的过去分词为-ed(与过去式相同),talk- live- study- plan-,past participle 过去分词,talked - talked,lived - lived,studied - studied,planned - planned,原形 过去式 过去分词,2 不规则动词的过去分词,A - A - A,burn,cost,cost,hit,hit,hit,A - A - B,beat,beat,beaten,A - B - B,cost,burnt,burnt,keep,kept,kept,meet,met,met,A - B - C,be,was/were,been,do,did,done,come,came,come,A - B - A,past participle 过去分词,写出以下动词的过去分词,looked,turned,gone,brou
3、ght,put,came,finished,swam,bought,cut,cried,written,thought,hit,run,stayed,tried,known,had,hurt,left,played,studied,took,got,already vs. yet,I have already bought a MP4. I have bought a MP4 already. I havent bought a MP4 yet. Have you bought a MP4 yet?,already一般用于_句,常位于句_或句_ yet一般用于_句或_句,常位于句_,肯定,中,末,否定,疑问,末,-Have you ever drunk green tea? -Yes, I have. -No, I have never drunk green tea.,ever意为_,一般用于_句 never意为_,表示否定,曾经,疑问,从不,ever vs. never,since vs. for,I have not laughed like this since my chil
4、dhood. The Greeks have tried to capture our city for ten years.,We use since with (a period of time/ a point in time). We use for with (a period of time/ a point in time).,since和for有时两者可以进行同义句转换,但必须注意后面加的时间状语。,I have been here for 10 years. = I have been here since 2000. = I have been here since 10 years ago.,since + 从句 (常用一般过去时),The Greens have lived here since they moved to Beijing.,She has been this city since she came to China.,当句子包含的时间状语含有since和for时,动作必须用延续性动词。,I have bought the book for a
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