现 在 完 成 时 态过 去 完 成 时 态现在完成时态1. 现在完成时表示的是已经完成的动作，但动作造成的影响还在，常被 just, already, yet 等副词修饰,谓语常用：have / has + 动词的过去分词 （done）。如：He has already gone to Tianjin.(他已经去天津了。) 对现在造成的影响是他已经不在这儿了。你知道动词的过去分词是怎样构成的吗?1.一般在动词原形末尾加 edlook play start2.结尾是 e 的动词加 dlive hope use3.末尾只有一个辅音字母的重读闭音节词,先双写这个 辅音字母, 再加 edstop plan trip4. 末尾是 辅音字母+ ystudy carry worryedededdddpednedpedstudied carriedworried别忘了还有一些不规则的:am / is - - beat - - cut - -draw - -eat - -give - -go - -keep - -lay - -lie - -speak - -fight - -wear - -was / were beenbeat beatenlay lainspoke spokenfought foughtwore wornwent gonekept keptlaid laiddrew drawnate eatengave givencut cut我刚刚看过这部电影。_.否定句：_.一般疑问句： _.提问： _.Are you clear? Lets have a try!I have just seen the film.Have you seen the film yet?I havent seen the film yet.What have you done ?他已经做完作业。_.否定句：_.一般疑问句：_.提问：_. He has already finished his homework.Has he finished his homework yet?He hasnt finished his homework yet.What has he done?2.现在完成时还可用来表示过去发生的动作一直延续到现在，常带有 for 或 since 等表示一段时间的状语,对 他们提问用 How long?for后面要加一段时间，而since 后面只能加点时间，或句子。for 5 years, for 20 minutes, since 1995, since last week, since 20 years ago, since it was open）。 I have worked in No.1 Middle School for 2 years. 王先生自1983年以来一直住这儿。看完例句，你会更明白！Mr Wang has lived here since 1983.我在一中已工作了两年。= I have worked in No. 1 Middle School since 2 years ago. 写出它们的同义句：1I knew her 7 years ago.(我7年前认识她的。)= I _ _ _ _ _ _.= I _ _ _ _ _ _ _.have known her for 7 yearshave known her since 7 years ago1.李老师教我们英语已有3年。Mr Li _ _ _ English _ 3 years.2. 我们已经5年没见面了。We _ _ each other _ _ _.3. 自10年前以来，他们已在那儿工作。They _ _ there _ 10 years _.4.自她5岁起，就一直在学英语。She _ _ English _ _ _ 5 years old.has taught usforhavent seen for 5 yearshave worked sinceagohas studied since she was3.注意：瞬时动词 die, come, go, begin, finish, borrow等可用现在完成时态，但不能与for,since引导的一段时间连用。 I borrowed the book three days ago. I have borrowed the book for 3 days.I have kept the book for three days.例如：我3天前借的这本书。/ 这本书我已借3天。Which one is right? 下面的说法哪个对？所以瞬间动词与一段时间连用时，要用对应的表示状态 的动词或动词短语。你能牢记它们的转换吗？1.come / go 2.arrive / reach / get 3.begin / start 4.borrow / lend 5.come back 6.6. end / finish 7. buy 8.die 9.join 10.leavebe here / there be in be on keep be backbe over have be dead be in = be a member of be away (from)请改正以下的句子：1.He has come to Beijing for seven years._.2.I have caught a cold since last Friday._.3.He have bought the computer since 3 weeks._.He has been in Beijing for seven yearsI have had a cold since last FridayHe has had the computer for 3 weeks翻译： 1.电影开始半个小时了。The film _ _ _ _ half an hour2已经放学20分钟了。School _ _ _ _ 20 minutes.3他的爷爷已去世5年了。 His grandpa _ _ _ _ 5 years.= His grandpa _ _ _ _5 years _.has been on forhas been over forhas been dead forhas been dead sinceago4.表示说话前发生过一次或多次的动作，我们常用“过”来表示，常带有twice, once, ever, never等时间状语。 例如： 我从没看过那部电影。 Ive never seen that film. 这本小说他看过两次。 He has read the novel twice. 你在网上购过物吗？ Have you ever shopped online? 5. 注意：have been to sp.与have gone to sp.的区别 ，have been to 表示某人曾经去过某地，人已回来；而have gone to 表示某人去了某地，人还没回，即人不在说话人的地方。它们都不能与for, since引导的一段时间连用，另外 have been in sp.表示在某地有多长的时间，可以与for, since引导的一段时间连用， 1我去过两次北京。I _ _ _ Beijing _.2李平不在这儿，他去北京了。Li Ping isnt here, he _ _ _ Beijing.3他的父母亲在北京有40年了His parents _ _ _ Beijing_40 years _. have been totwicehas gone tohave been insinceago过去完成时我们可以用 “过去的过去” 来概括过去完成时，谓语常用：had + done(动词的过去分词) 用法和现在完成时大致相同，只不过又向前推了一个时态。1.表示过去某一时刻或某一动作之前已经完 成了的 动作，通常与 by构成的短语或 when, be