现在完成时new

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1、现在完成时现在完成时I visited Beijing in 2004.I have visited Beijing.Have you ever visited Beijing?I visited Hong Kong Disneyland in 2006.I have visited Disneyland.Have you ever visited Disneyland?I watched the 2008 Olympic Games in August.I have watched the 2008 Olympic Games.Have you watched it?1.I asked yo

2、u to do your homework last night.Have you finished your homework?2.You should return your book this week.Have you returned it to the library?3.Its 12 clock now.Have you had your lunch?4.You are on duty today.Have you cleaned the classroom?现现在在完完成成时时：表表示示到到目目前前为为止止已已经经完完成成，并并对现在留下某种后果和影响的动作对现在留下某种后果和

3、影响的动作。1.构成：构成：have/has 动词过去分词动词过去分词 （1）has用用于于主主语语是是第第三三人人称称单单数数,have用于其它人称用于其它人称(如如I,You,They)。（2）动动词词的的过过去去分分词词构构成成分分为为规规则则动动词词和和不不规规则则动动词词。规规则则动动词词在在词词尾尾加加ed，其其规规则则与过去式一样。不规则动词要记住。与过去式一样。不规则动词要记住。look-watch-enter-enjoy-invite-visit-want-cry-stop-looked-lookedwatched-watchedentered-enteredenjoyed-

4、enjoyedinvited-invitedvisited-visitedwanted-wantedcried-criedstopped-stoppedI have had my breakfast.(现在已经饱了。）现在已经饱了。）I have finished my homework.（现在不用做了。）（现在不用做了。）He has cleaned the blackboard.（现在黑板是干净的。）（现在黑板是干净的。）They have cleaned the classroom.（现在教室是干净的。）（现在教室是干净的。）Have you had your breakfast?Yes

5、,I have./No,I havent.Have they cleaned the classroom?Yes,they have./No,they havent.Has he cleaned the blackboard?Yes,he has./No,he hasnt.疑问式疑问式:Have/Has+主语主语+过去分词过去分词+其他其他?I havent had my breakfast.He hasnt cleaned the blackboard.They havent returned.否定式否定式:主语主语+havent/hasnt+过去分词过去分词+其他其他.表表示示经经历历或或

6、经经验验。常常与与ever或或never连连用用。ever和和never 表表示示到到现现在在为为止止动动作或状态曾经发生过或从来没有发生过。作或状态曾经发生过或从来没有发生过。Have you ever（曾曾经经）visited Hong Kong?Ive never（从没）（从没）visited America.用用 法法 I have already finished my homework.She hasnt come back yet.表表示示刚刚刚刚发发生生过过的的动动作作或或事事情情，常常与与just连用。连用。They have just come back.She has j

7、ust had her lunch.表示最近发生的动作或情况。常与表示最近发生的动作或情况。常与yet或或already连用。如：连用。如：She has not seen this film .She has seen this film.I have cleaned the room.Have you cleaned the room .He has watched a video.He has not watched a video .already -yet 已经已经 用于肯定句用于肯定句 用于否定句，疑问句用于否定句，疑问句do-did-donehave-had-hadsee-saw

8、-seen go-went-gonegive-gave-giventake-took-takenbuy-bought-boughteat-ate-eatenread-read-readswim-swam-swumwrite-wrote-writenforget-forgot-forgottenhear-heard-heardmake-made-madecome-came-comebe-was/were/beenget-got-gotleave-left-leftCheck your homework:当有一个表示过去某时的状语时（如当有一个表示过去某时的状语时（如yesterday,last

9、night,two years ago），），不能用现在完成时，而多用一般过去时。不能用现在完成时，而多用一般过去时。I saw Mary an hour ago.She came late yesterday.现在完成时与一般过去时的区别现在完成时与一般过去时的区别 有些时间状语，既能用于现在完成时，有些时间状语，既能用于现在完成时，又能用于一般过去时，但意义上有差别。又能用于一般过去时，但意义上有差别。Ive written three letters this morning.（说话时仍是上午）说话时仍是上午）I wrote three letters this morning.（说话时

10、仍是上午或晚上）（说话时仍是上午或晚上）现在完成时强调动作或事情发生在过现在完成时强调动作或事情发生在过去，一直延续到现在，而且还有可能继续延去，一直延续到现在，而且还有可能继续延续下去；而一般过去时只表示发生在过去的续下去；而一般过去时只表示发生在过去的动作或事情。动作或事情。I have taught English for ten years.（还在教）（还在教）I taught English for two years.（曾教过两年，现在不教了）（曾教过两年，现在不教了）1.I_ already _(see)the film.I _(see)it last week.2._ he (

11、finish)his work today?Not yet.haveseensawHasfinished3._ you ever _(eat)chocolate?No,never.Haveeaten4.My father _ just _(come)back from work.He is tired now.hascome5.Shanghai (be)a small town hundreds of years ago.Now it (become)a large city.washas become 1.我已经参观过北京了。我是去年去那里我已经参观过北京了。我是去年去那里的。的。2.我很高

12、兴，因为我学会了开车。我很高兴，因为我学会了开车。3.你是什么时候回来的？你是什么时候回来的？I have already visited Beijing.I went there last year.I am very happy because I have learned to drive a car.When did you come back?4.我爸爸刚下班回来。我爸爸刚下班回来。5.我已经看过这场电影了。我昨晚看的。我已经看过这场电影了。我昨晚看的。My father has just come back from work.I have seen the film.I saw

13、it last night.Find out and translate:Has she visited China before?She s watched it.=She has watched it.She has enjoyed my messages about my life here in Beijing.Have you ever wanted to travel around the world?Ive always wanted to go to the USA and Europe.6.Sally has invited me to stay with her in En

14、gland one day.7.Have you looked at todays newspaper?8.Have you ever entered a competition?Notes:1.have wanted1.Where _ you _,John?Im looking for you everywhere.A.have;been B.have;been to C.have;gone D.did;go to2.How long _ your father _ Shanghai?A.did;come B.has;go toC.has;been to D.has;been in选选 择择

15、A.have;beenD.has;been in3.I _ my watch in my bedroom yesterday.A.leftB.forgotC.have forgottenD.have left4.She has worked in the factory _.A.since three years agoB.for 1999C.since in 1999D.since three yearsA.leftA.since three years ago 表表示示过过去去发发生生，目目前前还还有有可可能能仍仍在在继继续续下下去去的的动动作作或或事事情情。常常与与since或或for连用。连用。He has lived there since 1950.We have know each other for more than ten years.