八年级现在完成时态()课件

,the Present Perfect Tense,现在完成时,现在完成时,概念,一.,基本结构：,用法2：,二、用法1：,标志词：,标志词：,表示,过去发生或已经完成的某一动作对现在造成的影响或结果。,already,yet,just,ever,never,before,过去已经开始，持续到现在的动作或状态。,for,since,sinceago,助动词,have,(,has,)+动词的过去分词,注：has 用于第三人称单数，have 用于其他所有人称。,概念一.基本结构：用法2：二、用法1：标志词：标志词：表示过,eg.,I,have,never,heard,of that before.,Have,you ever,ridden,a horse?,She,has,already,finished,the work.,Have,you,milked,the cow yet?,Yes,I,have done,that already,I,ve,just,lost,my math book.,eg.I have never heard of,过去分词,1.规则变化与过去式相同;,（1.）在词尾加-ed,（2.）以e结尾的加-d,(3.)重读闭音节双写词尾加ed,（4.）辅音字母加y结尾的变y为i加-ed；元音字母加y结尾的直接加-ed,2.不规则变化比较多,如:,过去分词1.规则变化与过去式相同;,一、,AAA,型（原形原形原形）（8）,一、AAA型（原形原形原形）（8）,二、,ABA,型（原形过去式原形）(3),二、ABA型（原形过去式原形）(3),三、,ABC,型,1.ow ew own（5）,三、ABC型 1.ow ew own（5）,2.i,a,u,（5）,2.ia u（5）,3.原形过去式过去式,+(e)n,（8）,3.原形过去式过去式+(e)n（8）,4.原形过去式原形,+(e)n,（10）,4.原形过去式原形+(e)n（10）,5.无规律（3）,5.无规律（3）,四、,ABB,型,1.原形ought ought（4）,四、ABB型,2.原形aught aught（,2,）,2.原形aught aught（2）,3.变其中一个元音字母（,7,）,3.变其中一个元音字母（7）,4.原形,l,tlt（,5,）,4.原形ltlt（5）,5.变其中一个辅音字母（,7,）,5.变其中一个辅音字母（7）,八年级现在完成时态()课件,五,、有两种形式,的,（8）,五、有两种形式的（8）,八年级现在完成时态()课件,六.,AAB型（1）,七、情态动词,六.AAB型（1）七、情态动词,1The room is cold,.,Who（open）the window？,2 He,_,go）to the cinema,.,3,_,you,_,（put）away my dictionary?,4.We_(not finish)the work yet.,5.I_(see)the play.I _(see)it last month with my sister.,6.I am not hungry.I _just_(have)my dinner.,7.Dont worry.The train_,(arrive),yet.,1The room is cold.Who,用法一,1.我已经看过这部电影。,I,already,the film.,have,seen,2.你已经浇过花了吗？,you,the flowers yet?,Have,watered,3.他刚刚完成了家庭作业。,He,just,his homework.,has,finished,4.我们曾经去过五仙山。,We,ever,to the Wuxian Hills.,have,been,5.李雷从不抽烟。,Lilei,never,.,has,smoked,用法一1.我已经看过这部电影。I,一,、当有一个表示过去某一特定时间的状语时，不用现在完成时，而用一般过去时:,yesterday,(昨天),just now,(刚才)，,an hour ago,（一个小时前）,last year,(去年);etc.如：,We finished our work last week.,The plane took off ten minutes ago.,2.飞机十分钟前起飞了。,1.我们上周完成了我们的工作。,They went swimming yesterday.,3.昨天，她们去游泳了。,比较1,一、当有一个表示过去某一特定时间的状语时，不用现在完成时，而,练习 1,1.他去过两次泸州。,2.他们去了办公室，将很快回来。,3.他在中国四年了。,He _ _ _ Luzhou _.,has,been,to,twice,They _ _ _ the office.They _ _ back soon.,have,gone,to,will,come,He _ _ _China _ four years.,has,been,in,for,4.自从两年前以来，我就买了这块手表。,I _ _ the watch _ two years _.,have,had,since,ago,5.他已经离开一小时了。,He _ _ _ _ an hour.,has,been,away,for,练习 11.他去过两次泸州。2.他们去了办公室，将很快回来。,用法二,1.我学习英语达到3年了。,I,English for 3 years.,have,learned,2.自从9点钟以来，我们就在这儿等他。,We,for him since 9:00.,have,waited,We,for him since 9:00.,have,waiting,been,I,English for 3 years.,have,been,learning,3.自从两周前以来，他就在练习打篮球。,He,basketball since 2 weeks ago.,has,practiced,4.自从Lucy来中国以来，她就结交了许多朋友。,She,many friends since Lucy came to China.,has,made,用法二1.我学习英语达到3年了。I,用法二,一段时间的表达方法有两种:,1.for+一段时间，如：达到3年,for 3 years,2.since+过去的某一时刻,如：自从上周以来,since last week,since Lucy came to China,since+一般过去时态的从句,如：自从Lucy来中国以来,注意:for 和since 所引导的时间状语都表示一段时间，对它们提问都用短语：,如：,How long,I have studied English,for 3 years,.(对划线部分提问),have you studied English?,long,How,用法二一段时间的表达方法有两种:for 3 years2.,动词转换,结束性动词不能和表示一段时间的时间状语连用,但是可以转换成相应的延续性动词或短语。如：,buy-,borrow-,leave-,come-,begin-,die-,join-,.,1.他来中国半年了。,He,comes,China for half a year.改为：,。,have,keep,2.李雷买这本字典3天了。,Li Lei has,bought,a dictionary for 3years.改为：,。,be away,be in,be on,be dead,be a member of,has been in,had,3.他的爷爷去世3年了。,His grandpa has,died,for 3 years.改：,。,been dead,动词转换结束性动词不能和表示一段时间的时间状语连用,但是可以,比较2,二、现在完成进行时态，如：,三、过去完成时态，如：,1.当我赶到车站时，公共汽车已经开走了。,When I hurried to the bus stop,the bus had already left.,2.当我醒来时，妈妈已经上班去了。,When I wake up,mother had already gone to work.,1.我学习英语达到3年了。,I,English for 3 years.,have,been,learning,2.自从9点钟以来，我们就在这儿等他。,We,for him since 9:00.,have,waited,We,for him since 9:00.,have,waiting,been,比较2二、现在完成进行时态，如：三、过去完成时态，如：1.当,练习,1,2,3,4,练习1234,1.A:I,my purse.(lose),B:What a pity.When,you,it?(lose),A:I,it this morning.(lose),练习 2,have,lost,did,lose,lost,2.A:I have watched the game.,B:When _ you _ it?,A.have watched B.do watch C.did watch,3.A:Ann has gone to Shanghai.,B:So,her parents.（填词）,4.Youve never seen such a wonderful film before,?,A.havent you B.have you C.do you,have,B,C,1.A:I,1.Mr.Green _ in China since five years ago.,A.lived B.has lived C.lives,2.His grandma _ for two years.,A.died B.has been dead C.has died,3.A:Where is Han Mei now?,B:She _ to Shanghai.She will be back in two days.,A.has gone B.has been C goes,4.A:,to the United Stated?（填词）,B:No,never,but I went to Canada a few years ago,5.You havent changed your mind,_?,A.do you B.are you C.have you,练习 3,Have you been,B,B,A,C,1.Mr.Green _ in China sin,1.How long have you _ the football team of the school?,A.been on B.been C.joined D.played,2.-Where have you _ these days?,-I have _ to Beijing with my friends.,A.been,gone B.been,been C.gone,been D.gone,gone,3.How long have you _ this book?,A.bought B.borrowed C.had D.lent,4.Excuse me,_ you seen the film yet?-Yes,I _ it last night.,A.have,see B.have,have seen C.have,seen D.have,saw,5.He has never ridden a horse before,_?,A.is he B.isnt C.hasnt D.has he,练习 4,A,B,B,D,D,1.How long have you _ the,中考,98,99,00,01,02,03,04,05,中考989900010