現(xiàn)在完成時和一般過去時區(qū)別

1、關(guān)于現(xiàn)在完成時與一般過去時的區(qū)別第一張，PPT共三十三頁，創(chuàng)作于2022年6月一.表示從過去某一時刻開始并一直延續(xù)到現(xiàn)在的動作或事情,但動作或事情現(xiàn)在已經(jīng)結(jié)束。eg：1. Someone has just turned off the light.有人剛把燈關(guān)了。 2. I have already finished my homework.我已經(jīng)完成了家作。二.表示從過去某一時刻開始并一直延續(xù)到現(xiàn)在的動作或事情,但動作或事情可能仍在繼續(xù)。第二張，PPT共三十三頁，創(chuàng)作于2022年6月eg：1. I want to see how much the place changed since I

2、saw it last.我想看看從上次見到那地方以來它發(fā)生了多大變化。 2. I have learnt English for more than ten years.我已經(jīng)學了10多年的英語。三.表示人曾有過或到目前為止從未有過的經(jīng)歷.eg：1. Have you ever been to the Summar Palace?你曾去過頤和園嗎? 2. I have never had a car.我從未有過汽車。第三張，PPT共三十三頁，創(chuàng)作于2022年6月四.現(xiàn)在完成時還常與句型 This is the first time，Its the first time 連用。eg：1.This

3、 is the first time he has driven a car .這是他第一次開車。五.現(xiàn)在完成時和最高級連用表示到現(xiàn)在為止是最的。What a boring film！Its the most boring film Ive ever seen.現(xiàn)在完成時除了上述主要用法之外，還有一些其它用法，在此不一一講解，請學生自已學習、掌握。一部多么令人厭煩的電影啊！這是我看過的最令人厭煩的電影。第四張，PPT共三十三頁，創(chuàng)作于2022年6月現(xiàn)在完成時與一般過去時的區(qū)別第五張，PPT共三十三頁，創(chuàng)作于2022年6月第一單元已講解了現(xiàn)在完成時，在第一冊中也已講解了一般過去時的主要用法?，F(xiàn)將

4、這兩種時態(tài)的用法加以區(qū)別，以便使學生更好地掌握，區(qū)別兩者的不同用法。第六張，PPT共三十三頁，創(chuàng)作于2022年6月一.現(xiàn)在完成時和一般過去時都是說過去的事情，但現(xiàn)在完成時注意的不是事情本身，而是強調(diào)事情與現(xiàn)在保持的某種密切聯(lián)系（如現(xiàn)在的結(jié)果，影響,一直延續(xù)到現(xiàn)在等）;而一般過去時，則只表示發(fā)生在過去的動作和事情與現(xiàn)在沒有關(guān)系。 第七張，PPT共三十三頁，創(chuàng)作于2022年6月eg：1. He has bought an English-Chinese dictionary. 他已經(jīng)買了一本英漢字典。eg：2. He bought an English-Chinese dictionary. 他曾

5、買過一本英漢字典。 第一句用現(xiàn)在完成時時態(tài)，意為：“He bought an English-Chinese dictionary. And he still has it” “過去他買了一本英漢字典，現(xiàn)在他還有這本字典” 。 第二句用過去時只敘述過去他買過一本英漢字典這一事實，至于現(xiàn)在他是否有這本字典并未強調(diào)說明。第八張，PPT共三十三頁，創(chuàng)作于2022年6月二當有一個表示過去某一特定時間的狀語時，不用現(xiàn)在完成時，而用一般過去時: eg：1. I saw the film on television yesterday . 但since(自以來)+某一過去時間或敘述過去事情的從句總是與現(xiàn)在完

6、成時連用。eg：1. They have known each other since 1950 . 2. Since he was a child,he has lived in England.第九張，PPT共三十三頁，創(chuàng)作于2022年6月三常與一般過去時連用的典型的表示過去時間的狀語yesterday(昨天),the other day (前兩天),just now(剛才)，時間+ ago,last +時間 ; etc; eg: 1. The plane took off ten minutes ago 飛機十分鐘前起飛了。 eg: 2. We finished our task las

7、t week .我們上周完成了我們的任務。第十張，PPT共三十三頁，創(chuàng)作于2022年6月四常與現(xiàn)在完成時連用的表示到現(xiàn)在為止這段時間的詞短語或從句: so far (到現(xiàn)在為止)，up to (till,until)now直到現(xiàn)在，lately（最近）yet ,since+過去時間或敘述過去事情的從句。eg：1. The weather has been hot so far this summer 到目前為止，今夏天氣一直很熱。2.I havent seen her yet .我還未見到過她。 第十一張，PPT共三十三頁，創(chuàng)作于2022年6月五可與現(xiàn)在完成時連用，也可與一般過去時連用 的時間

8、狀語： for +時間 ，this +時間表示不確定時間：ever,never,before,just,recently,already第十二張，PPT共三十三頁，創(chuàng)作于2022年6月eg: 1.I have learnt English for three years. 我學英語（到現(xiàn)在）三年了（仍在學）。2.I learnt English for three years.我學了三年英語（現(xiàn)在不學了）。3.I have written two letters this morning 今天上午我寫了兩封信，(說話時仍是上午)。4.I wrote two letters this morni

9、ng .今天上午我寫了兩封信，（下午或晚上說的）。 注：表示不確定時間的狀語，在句中無其它特定的過去時間狀語時，或無表示過去動作的從句時常與現(xiàn)在完成時連用。eg:1. I have not written to my parents recently. 我最近一直未給父母寫信。2. I have met him many times before.我以前見過他多次。第十三張，PPT共三十三頁，創(chuàng)作于2022年6月表示一個持續(xù)了一段時間，剛剛結(jié)束或仍在繼續(xù)進行的動作。與現(xiàn)在完成時有所有同的是現(xiàn)在完成進行時強調(diào)動作本身或動作的持續(xù)性、持久性。eg：1. Weve been looking for

10、you everywhere.where have you been?我們一直在到處找你，你上哪兒去了？ 2. What have you been doing?你一直在做什么？ 3. Ive been writing a laboratory report. 我一直在寫實驗報告。 第十四張，PPT共三十三頁，創(chuàng)作于2022年6月PART B:EXERCISES第十五張，PPT共三十三頁，創(chuàng)作于2022年6月 一.Find the choice :1.When I was at school,I_to the library every day.A.go B.was going C.have

11、goneD.went2.The new books_yet. A.havent arrived B.hast arrived C.didnt arrive D.dont arrive3._you ever_to shanghai. A.Havent arrived B.Hasnt arrived C.Didnt arrived D.Havebeen第十六張，PPT共三十三頁，創(chuàng)作于2022年6月4.He_his lunch. A.had B.have had C.has had D.ate5.For years,doctors_millions of patients lives with t

12、he help of microscopes. A.saved B.have saved C.has saved D.were saving第十七張，PPT共三十三頁，創(chuàng)作于2022年6月6.I was so happy to see John again last Sunday ,We _each other for more than two years. A.havent seen B.hadnt seen C.didnt see D.hasnt seen7.We _three lessons this month. A.have learned B.learned C.has lear

13、ned D.were having第十八張，PPT共三十三頁，創(chuàng)作于2022年6月8.I_to Paris several times. A.went B.have gone C.have been D.was going9.Alice _ in china for ten years. A. has lived B.have lived C.lived D.has live 第十九張，PPT共三十三頁，創(chuàng)作于2022年6月10.My uncle _in this city since 1980. A.lives B.have lived C.has lived D.lived11.By no

14、w old Wang _in that factory for twenty years. A.have worked B.worked C.works D.has worked第二十張，PPT共三十三頁，創(chuàng)作于2022年6月12.Christianity(基督教) has become a worldwide religion(宗教) since it _almost two years ago. A. begin B.begins C.began D. has begin13.Shakespeare _many plays such as Hamlet,and Romeo And Juli

15、et. A.writes B.have written C.wrote D.has written第二十一張，PPT共三十三頁，創(chuàng)作于2022年6月14.When we lived in phoenix we _at Arizona State university.A.studied B.have studied C.study D.were studying15.I wrote to my parents three month ago but I_to my parents lately. A.havent written B.dont write C.didnt write D.wil

16、l not write第二十二張，PPT共三十三頁，創(chuàng)作于2022年6月16.Li Ming _to Shanghai.He will be back next month. A.went B.have gone C.has gone D.will go 17.She _an actress for some time . A.was B.being C.is D.has been第二十三張，PPT共三十三頁，創(chuàng)作于2022年6月18.Professor Chen _our exams yet. A.didnt mark B.hasntmarked C.will not mark D.have

17、nt marked19.He left last year and_away ever since. A.is B.have been C.was D.has been20. I_my task the other day.A.finished B.have finished C.finish D.will finish 第二十四張，PPT共三十三頁，創(chuàng)作于2022年6月二. choose the one that is wrong:1.I lived in this city since I was a child .2.I lost my pen, I have to write with

18、 a pencil .3.Hangzhou is the most beautiful city I saw . 4.She has read the book last week . C第二十五張，PPT共三十三頁，創(chuàng)作于2022年6月5.My classmates and I have visited the memorial hall of chairman Mao yesterday .6.My grandmother has lived with us since my grandfather has died six years ago . 第二十六張，PPT共三十三頁，創(chuàng)作于20

19、22年6月7.After breakfast she takes a walk to buy the morning paper she does this every morning for ten years .8.It was very hot lately ,but its beginning to get a bit cooler .9.Have you gone to the great wall?Yes,I have ,I went there last Sunday .第二十七張，PPT共三十三頁，創(chuàng)作于2022年6月三.Fill in the blanks For the l

20、ast three days I 1_(work ) hard.When we moved in three days ago ,everything was in a mess ,but now I 2 almost ( finish) the job. Today I 3 (work)since breakfast and 4 (not have )anything to eat . Anne 5 (bring )me a sandwich an hour ago but I 6 (tell) her not to come into the kitchen.第二十八張，PPT共三十三頁，創(chuàng)作于2022年6月I 7 (never,forget) what 8 (happen) several years ago when she tried to help me ,I 9 (hot have )many accidents since then but Anne 10 (often,warn)me to be careful .she 11 (warn) me again this morning at breakfast time ,第二十九張，PPT共三十三頁，創(chuàng)作于2022年6月but I 12 (work)for four hours and noth