现在完成时公开课 完整版课件

1、The Present Perfect Tense现在完成时Lecturer: Mr. Xie 现在完成时的构成助动词have (has）+ 过去分词 Present Perfect Tense 过去分词的构成 Typeoriginal p.t p.pcostcostputputmeetmetcatchcaught knowknewspeakspokegivegavebreakbrokeeatateABB AAA ABCcostputmetcaughtknownspokengivenbrokeneaten现在完成时的主要用法一.表示过去发生的某一动作或者事情对现在造成的影响或结果。动作或者事情

2、现在已经结束。Someone has just turned off the light.(有人刚把灯关了。)翻译：我已经完成了家庭作业。 I have already finished my homework.现在完成时的主要用法二.表示从过去某一时刻开始并一直延 续到现在的动作或事情,但动作或 事情可能仍在继续。 He has lived here since 1999.他从1999年就一直住在这里。翻译：我已经学了10多年的英语。I have learnt English for more than ten years.三.表示人曾有过或到目前为止从未有过的经历.Have you eve

3、r been to the Summer Palace?(你曾去过颐和园吗?) 翻译： 我从未有过汽车。现在完成时的主要用法I have never had a car.四.现在完成时还常与句型 This is the first time，Its the first time 连用。This is the first time he has driven a car .这是他第一次开车。现在完成时的主要用法五.现在完成时和最高级连用表示到现在为止是最的。What a boring film！一部多么令人厌烦的电影啊！Its the most boring film Ive ever seen

4、.这是我看过的最令人厌烦的电影。现在完成时的主要用法现在完成时的时间状语常与不确定的时间状语连用,表示“到目前为止”所发生的动作.还可以和包括现在在内(到说话时仍未结束)的,表示一段时间的状语连用.already, never, ever, just, yet, before, up to now, so far, for the last few weeksnow, today, this morning these days, since, for a long time等.一、since短语或从句表示过去的动 作延续至今，since之后的时间为一点。 Mr. Smith has work

5、ed here since 1984（1984年以来，史密斯先生一直在这工作。)Hes learned about 5,000 English words since he went to college. （他上大学以来大约学了五千个英语单词。）二、for短语表示动作延续多长时 间，for的宾语为时间段。 We have known each other for twenty years. （我们认识有二十年了。） I havent seen her for a long time. （我好久没有见到她了。）三、already和yet常见于现在完成时中，有“已经”之意。前者一般用在肯定句中，

6、后者用在疑问句中。yet在否定句中有“还”之意。“Has the bus left yet”? “Yes. It has already left.” (“No. It hasnt left yet.) “汽车开走了吗？” “是的，已经开走了。” “不，还没有开走。 ”短暂性动词与时间段的关系 短暂性动词在肯定句、疑问句中不能与时间段连用，这些动词是：become, begin, buy, borrow, arrive, come, die, fall, finish, get to know, go, join, leave, marry 等。为了表述这种意思，我们常用相应的延续性动词hav

7、e，keep等或短语“be+名词（形容词、位置副词、介词短语）”来 代替短暂性动词。 become borrow die fall asleep finish join leave marry begin buy bekeepbe deadbe asleepbe overbe inbe awaybe marriedhavehave 翻 译 练 习： 1.我买了这块手表五年了。 2.这位老人已经死了十年了。 I have bought this watch for five years. I _ this watch for five years/since 5 years ago. The old man has died for ten years. The old man _for ten years/since 10 years ago.WWhave hadhas been dead 3.他已经回来三天了。 4.自从六点钟他就来这儿了。 5.我离开家乡已十年了。 He has come back for 3 days. He _for 3 days/since 3 days ago. He has come here since 6 oclock. He _since 6 oclock. I ha