1、现在完成时现在完成时 复习复习 l课前延伸课前延伸l自主复习现在完成时态语法内容l课前小检测课前小检测l写出下列各词的过去分词stop_buy_catch_ tell_bring_llive_drive_eat_ find_think_lstudy_forget_fly_ give_speak_lvisit_swim_write_ make_leave_stopped caught boughtthought told brought lived driven eaten found studied forgot flown given spoken visited swum written
2、made left 1.规则动词：与过去时变化相同。(1)一般+-ed work-worked-worked(2)以“e”结尾,+-d。live-lived-lived(3)“辅音字母+y”结尾，y 变 i,+-ed。cry-cried-cried(4)重读闭音节结尾(辅元辅)，双写后+-ed。drop-dropped-dropped 2、不规则动词，见不规则表（p122）动词动词过去分词过去分词 变化规则变化规则 l课堂探究课堂探究l自主回忆、讨论现在完成时态的用法：l现在完成时与一般过去时的区别l 表示过去发生或已经完成的动作对现在造成的影响或结果。表示过去已经开始,一直延续到现在的动作或
3、状态。1）现在完成时现在完成时与现在有联系，它表示过去的动作对现在所产生的结果、影响。一般过去时一般过去时通常表示在过去某一具体时间发生的动作，与现在没什么联系。2）现在完成时现在完成时表示过去延续到现在的行为；一般过一般过去时去时着重过去某一时刻的某一具体动作。I have bought a new computer.我买了一台新电脑。我买了一台新电脑。(着重点是我现在有了一台着重点是我现在有了一台新电脑新电脑)I bought a new computer yesterday.我昨天买了一台新电脑。我昨天买了一台新电脑。(强调的是我买新电脑强调的是我买新电脑的时间是昨天的时间是昨天)I h
4、ave seen the film.我看过这部电影。我看过这部电影。(现在我仍记得电影的内容现在我仍记得电影的内容)I saw the film three days ago.三天前我看了这部电影。三天前我看了这部电影。(强调是三天前强调是三天前,而不是而不是别的什么时候看的电影别的什么时候看的电影)l达标小检测达标小检测l1 He _ our school for 2 weeks A、left B、has left l C、have left D、has been awayl2 Harry Potter is a very nice film.I_ it twice.l.will see .
5、have seen.saw .see l3 His father _ the Party in 2008l.joined .has joined l .was in .has been inDBA l自主回忆、讨论其构成及句式特点：ll否定式:l疑问式:l简略答语:构成:肯定式：主语+have/has+过去分词+其他。(当主语是第三人称单数时用has。)主语+havent/hasnt+过去分词+其他。Have/Has+主语+过去分词+其他?Yes,主语+have/has.(肯定)No,主语+havent/hasnt.(否定)l达标小检测达标小检测lJim finished his homewo
6、rk(改为现在完成时)lWe have visited Beijing（改为否定句和疑问句并做肯定,否定回答）Jim has finished his homeworkWe havent visited Beijing.Have you visited Beijing?Yes,we haveNo,we havent.l小组内交流“如何判定现在完成时态”，组长负责总结。l现在完成时的含义之一是过去完成的动作对现在仍有影响,用以下四大标志词可以表达这种含义:l以already,just和yet为标志l以so far为标志l以ever和never为标志l以动作发生的次数为标志以以already,ju
7、st和和yet为标志为标志 already,just和和yet 表示到现在为止动表示到现在为止动作或状态已经、刚刚或还没有发生。作或状态已经、刚刚或还没有发生。He has already got her help.他已得到她的帮助。他已得到她的帮助。He has just seen the film.他刚刚看过这场电影。他刚刚看过这场电影。He hasnt come back yet.他还没有回来。他还没有回来。以以so far为标志为标志so far往往表示到目前为止动作或状往往表示到目前为止动作或状态已经发生。态已经发生。He has got to Beijing so far.到目前为
8、止他已到了北京。到目前为止他已到了北京。She has passed the exam so far.到目前为止她已经通过了考试。到目前为止她已经通过了考试。l 以ever和never为标志lever和never 表示到现在为止动作或状态曾经或从来没有发生过。lThis is the best film I have ever seen.这是我曾经看过的最好的一部电影。lHe has never been to Beijing.他从没有到过北京。以动作发生的次数为标志以动作发生的次数为标志若某一动作到现在为止已经发生了若若某一动作到现在为止已经发生了若干次干次,则要使用现在完成时。则要使用现在
9、完成时。He says he has been to the USA three times.他说他已经去过美国三他说他已经去过美国三次了。次了。l达标小检测达标小检测l1 -We have finished it.l -No,not_.l.already；already .yet;yet .already；yet .yet;alreadyl2 Have you_ been to the farm？l.already.never .ever .stilll3 He has _ been to Shanghai,has he?l already .never .ever .still l精讲点拨
10、lhave/has gone to 与have/has been to的区别lhave gone to表示某人表示某人“已经去某地了已经去某地了”，说，说话时此人可能在路上或已到那里，反正不在这话时此人可能在路上或已到那里，反正不在这里。里。l如：Where is Jim？吉姆在哪里？l He has gone to England.他去英国了。（尚未回来）lMr.Wang isnt hereHe has gone to Qingdao.王先生不在这里。他去青岛了。lhave been to 意为“曾经去过某地”，现在已不在那里了，后可接次数，如once，twice，three times等，
11、表示“去过某地几次”，也可和 just，never，ever等连用。l如：lMy father has been to Beijing twice.我父亲去过北京两次。lI have never been to the Great Wall.我从未去过长城。l达标小检测达标小检测l1 He _Beijing.He has been in Beijing for two days.lA.has been to B.went to C.has gone to D.has gone l2 How many times _you _the Great Wall?lA have,been to B ha
12、ve,gone to lC did,go D do,wentC Al3 Toms mother has_ twice.A、been to abroad B、went abroad lC、gone to abroad D、been abroadl4 My parents _ Shandong for ten years.l.have been in .have been tol.have gone to .have beenDA l时间“点”、“段”须分清l过去开始的动作可以延续到某一点结束,也可能继续延续,这时就要根据时间“点”、“段”选择相应的介词for或since。lfor+一段时间一段时
13、间 for a year for two weeks for three yearsSince 过去的某一时刻过去的某一时刻,since nine since last week 一般一般过去时态过去时态的时间状语从句的时间状语从句 since you came since you got home.He has been away since last week.He has been away for one week.对划线部分提问都用对划线部分提问都用How long l达标小检测达标小检测(for或或since)l1._two years l2._two years ago l3._
14、last month l4._ 1999 l5._yesterday l6._4 oclockl7.Ive known him _ we were children.forsincesincesincesincesincesincel8 Our teacher has studied Japanese _ three years.l9.She has been away from the city _ about ten years.l10 Its about ten years _ she left the city.sinceforfor l“终止”、“延续”要转换l英语中的动词从词义上可
15、以分为延续性和非延续性两种,在现在完成时态中一定要注意动词这一特性,应将这类非延续性动词转换为延续性动词。l关于瞬间动词的记忆口诀 l 现在完成在瞬间；非延只连时间点；终止需转换；否定方可碰一段。l注：1.瞬间动词又叫非延续性动词，还叫终止性动词。瞬间动词可以有现在完成时态，但不可以接一段时间，若要接一段时间，须要做一些相应的变换。l 2.瞬间动词在完成时态中的否定式可以接一段时间。l通常将短暂性动词转换成延续性动词，如 reach/come/arrivebe here/be in,begin/startbe on,diebe dead,open/closebe open/closed,fal
16、l illbe ill,catch a coldhave a cold,lbuyhave,come backbe back,go outbe out,borrowkeep,get upbe up,lose the jobbe out of the job,fall asleepbe asleep,stopbe over,lleave/movebe away/be out of,joinbe in/be a member等 l如:(误)Li Ming has bought the book for three days.l(正)Li Ming has had the book for three
17、 days.l(误)My father had joined the Party ten years ago.l(正)My father has been in the Party for ten years.l达标小检测达标小检测l1 He has died for 20 years.l应改为:l2 The factory has opened since 2007.l应改为:l3 How long has he left?l应改为:l4 He has borrowed the book for two weeks.应改为:He has been dead for 20 years.The factory has been open since 2007How long has he been away?He has kept the book for two weeks l课后提升课后提升l 1、必做作业：复习巩固本节所学语法内容，把错题整理在错题本上。l2、你对现在完成时态还有什么疑惑？l_
