中考复习 人教版 Go for it 八下u8-u10 U8 Have you read Treasure Island yet? U9 Have you ever been to a museum? U10 I've had this bike for three years? The Present Perfect Tense 现在完成时 现在完成时的构成 现在完成时的主要用法 与一般过去时的用法比较 知识点复习 (一)现在完成时表示过去发生的动作或事情对现在造成的影响和产生的结果.它强调的是过去的动作与现在的联系.常用的时间状语有already,yet,ever,never,just, before(key words)等. 现在完成时的主要用法 ? (二)表示一个从过去开始,一直持续到现在,有可能继续下去的动作或状态.通常和for或since引导的时间状语连用. since 后面接时间点或有一般过去时的 句子. for+一段时间 助动词 （可以帮助构成肯定、疑问和否定句） A: _____ your brother _____ his homework yet? (finish) B: Yes, he ‘s already done it. Key words Has finished yet already 注意：already 用于肯定句， yet 用于疑问句和否定句中 A: _____ you ever _____ to the park? ( be ) B: No, never. Key words Have been yet already ever never 注意： ever 曾经 用于疑问句中 never 从不 带有否定意义 I _____ just _____ the desk, you can take it to your classroom . (mend ) Key words have mended yet ever never just already Just 刚刚 与现在完成时连用 一般置句中 Just now 刚才 与一般过去时连用 I _____ _____ (be) to the Great wall twice Key words have been yet ever never just already twice twice 两次，用于完成时句尾 He _____ _____ (read) the Journey to the west before Key words has read yet ever never just already twice before before ...之前，用于完成时句尾。 A: How long have you studied in this school? B: I ____ _____(study)in this school for 2 years. have studied =I ____ _____(study)in this school ____2 years___. have studied since ago I have studied English _____I came to this school since 选用 for和 since填空: 1.We haven’t seen each other _____ a long time. 2.His father has been in the Party _____ 10 years ago. 3.The film has been on _____ 20 minutes. 4.Mr Green has worked here _____ he came to China. 5.His grandparents have been dead _____ a few years. 6. It’s five years _____ we met last time. for since for since for since ?与一般过去时的用法比较 一.现在完成时和一般过去时都是说过去的事情，但现在完成时注意的不是事情本身，而是强调事情与现在保持的某种密切联系（如现在的结果，影响,一直延续到现在等）;而一般过去时，则只讲述发生在过去的动作和事情与现在没有关系。 eg：He has bought a car 他已经买了一辆汽车。 He bought a car. 他曾买过一辆汽车。 ? 第一句用现在完成时时态，想表达意为：“He bought a car. And he still has it” “过去他买了一辆汽车，现在他还有这辆汽车” 。 ?第二句意为：“He bought a car. But we don't know if he still has it” 用过去时只叙述过去他买过一辆汽车这一事实，至于现在他是否有这辆汽车并未强调说明。 二、一般过去时与现在完成时时间的状语不同: 过去时时间状语：yesterday, the day before yesterday,just now， 时间+ ago, last +时间 等; We_____alreddy_____(finish)our task last week. eg:We_____(finish)our task last week . 现在完成时时间状语：already, yet, just, ever, never, before，twice，for，since....... finished have finished 动 词 填 空： 1._____ you _____(clean) the room? Yes, we __ ... ...
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