最新現(xiàn)在完成時課件(上課用)精品課件ppt講解學(xué)習(xí)

1、現(xiàn)在完成時課件(上課用)一)構(gòu)成:have/has+動詞動詞過去分詞過去分詞B 不規(guī)則動詞的過去分詞不規(guī)則動詞的過去分詞thoughtcaughtgivenmadewrittenputcostgrownhurtrunfeltfallenflownhaddrunkbroughtwornsungforgottenkept不規(guī)則動詞原型不規(guī)則動詞原型- -過去式過去式- -過去分詞形式：過去分詞形式：1 1） AAAAAA型型( (三種都一樣三種都一樣) )如：如：cost cost cost cut cut cut hurt hurt hurt shut shut shut set set set

2、 2）ABB型(過去式與過去分詞相同) 如如: : bring-brought-brought catch caught caught lead led led 3 3） ABCABC型型( (三種都不一樣三種都不一樣) ) 如：begin-began-begun grow grew grown ring rang rung break broke broken 4 4）ABA型型(原形與過去分詞相同原形與過去分詞相同) 如: come-came-come become became become run ran run 寫出下列動詞的過去分詞形式寫出下列動詞的過去分詞形式.wake _ 2.

3、 teach _ 3. sell _4. see _ 5. ride _ 6. pay _7. choose _ 8. throw _ 9. think _10. eat _ 11. drive _ 12. catch _13. bring _ 14. break _15. give _16. get _17. know _ 18. open _19. write _ 20. forget _Woken taughtSold seenRidden paid Chosen thrownThought eaten Driven caught Brought brokenGiven gotten K

4、nown openedWritten forgotten二)含義:(一)表示過去發(fā)生的動作或事情對現(xiàn)在的影響和產(chǎn)生的結(jié)果.它強調(diào)的是過去的動作同現(xiàn)在的聯(lián)系.常用的時間狀語有already,yet,ever,never,just,before等.(定義二)表示一個從過去開始,一直持續(xù)到現(xiàn)在,有可能繼續(xù)下去的動作或狀態(tài).通常和for或since引導(dǎo)的時間狀語連用.句式構(gòu)成句式構(gòu)成1.肯定句肯定句:S(主語）+have/has(助動詞）+PP(過去分詞)+(其他）。2. 否定句否定句:S ( 語語)+have/has+not +PP(過去分詞過去分詞)+(其他）。其他）。3.一般疑問句一般疑問句Ha

5、ve/has+ S (主主語語)+PP(過去分詞過去分詞)? Yes, S+have/has.No, S+have/hasnt.（改為否定句和一般疑問句并肯否回答)Ihaveseenhimsincehisweddingday.Ihaventseenhimsincehisweddingday.Haveyouseenhimsincehisweddingday? HehaswrittentomesinceIhavebeenill.(改為一般疑問句)Hashewrittentoyousinceyouhavebeenill? He hasnt written to me since I have bee

6、n ill1. 現(xiàn)在完成時中標志詞的用法區(qū)別現(xiàn)在完成時中標志詞的用法區(qū)別1.Already肯定句肯定句: 句中句中(助后實前助后實前)/句末句末 “己經(jīng)己經(jīng)”一般疑問句一般疑問句: 句末句末(表示驚訝的語氣表示驚訝的語氣) “難道難道”Eg.Ivealreadyhadbreakfast.(更常見)=Ivehadbreakfastalready.(表示強調(diào))Haveyouhadbreakfastalready?注:有already的句子在時態(tài)上并不都是現(xiàn)在完成時,判斷時要看該詞后是否有動詞的過去分詞.Eg.Shesalreadyeightyyearsold.Itwasalreadyverylat

7、e.2. yet在現(xiàn)在完成時中的用法在現(xiàn)在完成時中的用法否定句否定句:句末句末 “還還(沒沒)”疑問句疑問句: 句末句末 “己經(jīng)己經(jīng)” Eg.Ihaventhadbreakfastyet.Haveyouhadbreakfastyet?注:帶already的肯定句變成否定句或疑問句時,將already要變成yet放在句末.Eg. I have already done my homework.否定句否定句: :一般疑問句一般疑問句: :I havent done my homework yet.Have you done your homework yet?3. ever在現(xiàn)在完成時中的用法在現(xiàn)

8、在完成時中的用法肯定句肯定句/疑問句疑問句 : 句中句中 “曾經(jīng)曾經(jīng)”Eg.IveeverbeentoBeijing.HaveyoueverbeentoBeijing?4. never在現(xiàn)在完成時中的用法在現(xiàn)在完成時中的用法否定句否定句: 句中句中 “從來沒有從來沒有”Eg. Ive never been to Beijing.注:帶ever的肯定句變否定句時,要將ever變成never;帶ever的一般疑問句作否定回答時可用“No,never.”Eg. He has ever made dumplings.否定句否定句:Have they ever travelled by train?No

9、, never.He has never made dumplings.5. just在現(xiàn)在完成時中的用法在現(xiàn)在完成時中的用法用于用于句中句中, 表示表示“剛剛剛剛”Eg. Ive just had breakfast. What have they just done?6. before在現(xiàn)在完成時中的用法在現(xiàn)在完成時中的用法用于用于句末句末, 表示表示“以前以前” Eg. Ive seen it before. Has she ridden a bike before ?(定義二)表示一個從過去開始,一直持續(xù)到現(xiàn)在,有可能繼續(xù)下去的動作或狀態(tài).通常和for或since引導(dǎo)的時間狀語連用.1

10、.for +Eg.Ihavebeenherefor5weeks.HesstudiedEnglishfor3years.一段時間一段時間2. since +從句(一般過去時)詞組(表示過去某一時間的)時間點時間點Eg.Ihavebeenheresince2000.Ihavebeenheresince5yearsago.IhavebeenheresinceIgraduatedin2000.注2):對for或since引導(dǎo)的時間狀語提問必須用howlong,決不能用when.Eg.Ihavelivedherefor10years.Howlonghaveyoulivedhere?Shehasstood

11、heresince2hourago.Howlonghasshestoodhere?注3):短暫性動詞不能和for或since引導(dǎo)的時間狀語連用,當然也不能用于howlong引導(dǎo)的問句中.Eg.(誤)Ihavelefttherefor5years.(正)Ihavebeen awaytherefor5years.短暫性動詞與延續(xù)動詞間的轉(zhuǎn)換5.短暫動詞和短暫動詞和延續(xù)動詞轉(zhuǎn)換延續(xù)動詞轉(zhuǎn)換瞬間動詞瞬間動詞 vs延續(xù)動詞延續(xù)動詞練習(xí) 判斷：他到達車站半個小時了 Hehasarrivedatthestationforhalfanhour()He has been at the station for h

12、alf an hour .or He arrived at the station half an hour agoHe _the League since two years ago Joined B. has joined C. has been in翻譯：這個電影已經(jīng)放映十五分鐘了翻譯：這個電影已經(jīng)放映十五分鐘了-The film has been on for fifteen minutes. have /has been tohave /has been to，have / has gone tohave / has gone to， have / has been inhave /

13、 has been in的用法區(qū)別的用法區(qū)別 1“Have /has been to+地名地名”表示曾經(jīng)去過某地，說話時已經(jīng)回到說話地點，常與once、twice、ever、never等時間連用。2“have / has gone to +地名地名”表示去某地了，現(xiàn)在沒有回答，人不在說話地點。3“have / has been in +地名地名”表示“在某地”。指一種存在狀態(tài)巧記 ： been to ，gone to been in 意不同，三者用法要記清； have /has been to + 地名，曾經(jīng)到過某地行； have /hasgone to + 地點，到某地去了已走遠。have/

14、hasbeenin+地名，已經(jīng)在某地了。 用have /has been to和和have / has gone to填空 1.Hi，Lucy，youeverBeijing？ No，I. 2.Whataboutyoursister，Lily？ Oh，sheChengdu， shewillcomebacknextweek. Ok，thanks. Yourewelcome.have been to haventhas gone to四四)It is +一段時間一段時間 +since+句子句子(一般過去時一般過去時) =一段時間一段時間+has passed +since + 句子句子(一般過去時一

15、般過去時) Eg.ItisfiveyearssinceIjoinedthearmy.=FiveyearshaspassedsinceIjoinedthearmy.練習(xí)l自從我來到這正好兩天It is just two days since I came hereTwo days has passed since I came here lIt_(be)tenyearssinceI_(finish)middleschool. ishas been finished（一）現(xiàn)在完成時與一般過去時的區(qū)別（一）現(xiàn)在完成時與一般過去時的區(qū)別現(xiàn)在完成時表示過去發(fā)生或已經(jīng)完成的現(xiàn)在完成時表示過去發(fā)生或已經(jīng)完成

16、的某一動作對現(xiàn)在產(chǎn)生的影響或結(jié)果，強某一動作對現(xiàn)在產(chǎn)生的影響或結(jié)果，強調(diào)的是現(xiàn)在的情況。所以它不能和表示調(diào)的是現(xiàn)在的情況。所以它不能和表示過去時間狀語連用；而一般過去時只單過去時間狀語連用；而一般過去時只單純表示過去的動作或狀態(tài)，和現(xiàn)在不發(fā)純表示過去的動作或狀態(tài)，和現(xiàn)在不發(fā)生關(guān)系，可以和表示過去的時間狀語連生關(guān)系，可以和表示過去的時間狀語連用。用。He has lived in Beijing since 1999.自自1999年以來他一直住在北京。年以來他一直住在北京。（說明他現(xiàn)在仍然在北京。）（說明他現(xiàn)在仍然在北京。）He lived in Bejing in 1999.在在1999年的時

17、候他在北京住過。年的時候他在北京住過。（現(xiàn)在是否住在北京不知道）（現(xiàn)在是否住在北京不知道）Translation 1.1.他昨天去北京了。他昨天去北京了。 2.2.他去北京兩天了。他去北京兩天了。He went to Beijing yesterday. （現(xiàn)在是否住在北京不知道）（現(xiàn)在是否住在北京不知道）He has been in Beijing for two days. （說明他現(xiàn)在仍然在北京。）（說明他現(xiàn)在仍然在北京。）用動詞的適當形式填空（注意時態(tài)）（注意時態(tài)） 1.-_you_yourpen?(mend) -Yes,I_. -When_you_it? -I_ityesterday

18、. 2.-Howdoyoulikethefilm? -I_(notsee)suchamovingfilm before. 3.Milliessister_(join)theclublastweek. Soshe_(be)intheclubfornearly oneweek. Have mended have did mend mended havent seen joined has been 4.Myfather_(give)up_(smoke). Hedoesnt_(smoke)now. 5.TheGreenfamily_(notcome)back yetfromthecinema. Th

19、ey_(go)toseeafilmonehourago. 6.You_(notvisit)yoursonfora longtime. has given smoking smoke havent come went havent visited 6.ShehasknownSam_nineyears. (for,never,since) 7.Theyhave_arrived. (ever,just,yet) 8.Haveyou_riddenahorse? (ever,for,yet) 9.ShehasknownFred_theywere atprimaryschool. (already,jus

20、t,since) 10.Wehavenotcompletedthe project_.(already,for,yet) for just ever since yetII. 將下列句子中的動詞改為現(xiàn)在完成時將下列句子中的動詞改為現(xiàn)在完成時. John is drawing a picture. I write my name on the4 card. Tom blows out the light. The cat drinks its milk. The tree falls across the road. My parents give me a present.John has d

21、rawn a picture.I have written my name on the card.Tom has blown out the light.The cat has drunk its milk.The tree has fallen across the road.My parents have given me a present.單項選擇單項選擇 He _ working.A. have just started B. has just startedC. Has just stars 2. _ you _ your suitcase yet? Do, pack B. did, pack C. Have, packD. Have , packed3. I _ my room already. have tidied B. had tidied C. will tidy4. I _ my plane ticket, but I cant find it. will buy B. would buy C. have boughtD. have buyed5. -What has Denis done?