1、 现在完成时现在完成时表示过去发生的某一动作对现在造成的影响或产生的结果.现在完成时这一时态强调是过去动作与现在的联系,也就是强调现在的影响和结果.have/has+过去分词v现在完成时现在完成时:v have/has+过去分词过去分词 v1)表示到现在为止已经完成或刚刚完表示到现在为止已经完成或刚刚完成的动作。成的动作。vNow we have planted all the trees.vHe has just come back.v2)表示过去发生的动作表示过去发生的动作,但强调结果或对但强调结果或对现在的影响。现在的影响。vHave you had your supper?vI hav
2、e read the book twice already.v在以上两种用法中常跟在以上两种用法中常跟already,notyet,never,just,before,ever,recently等等时间继续下去的状语。时间继续下去的状语。v3)表示过去已经开始表示过去已经开始,持续到现在持续到现在,也也许还会继续下去的动作或状态，常与包许还会继续下去的动作或状态，常与包括现在在内的一段时间的状语连用。括现在在内的一段时间的状语连用。vHe has studied English for 6 years.vMary has been busy since she came back from H
3、angzhou.过去分词的构成 1.直接加-ed。如：play-playedv2.以字母e结尾的直接加d。如：name-namedv3.以辅音字母加y结尾的，变y为i加ed。如：carry-carriedv4.重读闭音节且末尾只有一个辅音字母，双写这个辅音字母再加-ed。如：stop-stoppedI have eaten my lunch.She has eaten her lunch.He has eaten his lunch.肯定句肯定句They have eaten their lunch.I have not(havent)seen the film.She has not(has
4、nt)seen the film.现在完成时的现在完成时的否定否定形式：形式：have not(havent)+过去分词过去分词 has not(hasnt)+过去分词过去分词 I havent eaten supper.eat-eatenHe hasnt changed his idea.change-changedMy mother hasnt come back e-come否定句否定句1.Ive already had dinner.I _ _ dinner _.2.He has just finished his homework.He _ _ his homework _.3.Mu
5、ms cooked the dinner.Mum _ _ the dinner.4.Susans learned English at school.Susan _ _ English at school.haventhadyethasnt finishedyethasnt cookedhasnt learned把下列句子改为否定句把下列句子改为否定句Have you eaten your breakfast?现在完成时的一般疑问句形式现在完成时的一般疑问句形式Have/has 提前提前+过去分词过去分词 Have you known Sandy for a long time?Yes,I h
6、ave/No,I havent.know-knownHas she eaten anything since 9:00 a.m.Yes,she has/No,she hasnt.eat-eaten疑问句疑问句1.Ive already had dinner.2.He has just finished his homework.3.Mums cooked the dinner.4.Susans learned English at school.Have you had dinner yet?Has he just finished his homework?Has mum cooked th
7、e dinner?Has Susan learned English at school?把下列句子改为一般疑问句把下列句子改为一般疑问句分清与一般过去时的用法分清与一般过去时的用法现在完成时属于现在时态的范围，现在完成时属于现在时态的范围，不能不能和表示过去和表示过去的时间状语连用，如的时间状语连用，如yesterday,last night,three weeks yesterday,last night,three weeks ago,in1990ago,in1990等等.而一般过去时只表示过去的动作或状而一般过去时只表示过去的动作或状态，和现在不发生关系。态，和现在不发生关系。eg-I
8、 have seen the film.eg-I have seen the film.eg-I saw the film last week.eg-I saw the film last week.eg-He has lived here since 1993.eg-He has lived here since 1993.eg-He lived here in 1993.eg-He lived here in 1993.v1.都表示过去发生的事v2.现在完成时强调过去和现在的联系，不能和具体的时间状语连用；v3.一般过去时强调过去发生的事或状态与表示过去的具体时间连用（last,ago,y
9、esterday,etc.）presentpasteg.1.He had his breakfast at 6:00 He has had his breakfast.2.When did you come here?I watched the football match on TV at 9:00.动词填空：动词填空：1._ you _(clean)the room?1._ you _(clean)the room?Yes,we_(do)that already.Yes,we_(do)that already.When _ you _(do)it?When _ you _(do)it?We
10、 _(do)it an hour ago.We _(do)it an hour ago.2._ he _(see)this film yet?Yes.2._ he _(see)this film yet?Yes.When _ he _(see)it?When _ he _(see)it?He _ it last week.He _ it last week.3.How many times _you_(come)here?Once.3.How many times _you_(come)here?Once.HaveHavecleanedcleanedhave donehave donedidd
11、iddododiddidHasHasseenseendiddidseeseesawsawhavehavecomecome4.I _(read)the novel twice.Its interesting.4.I _(read)the novel twice.Its interesting.5.She _(go)to Pairs,hasnt she?Yes.5.She _(go)to Pairs,hasnt she?Yes.How _ she _(go)there?How _ she _(go)there?She _(go)there by air.She _(go)there by air.
12、6.So far,many countries _(develop)6.So far,many countries _(develop)their software programs.their software programs.7.Mr Chen _(give)up smoking last year.7.Mr Chen _(give)up smoking last year.8._ you ever _(ride)a horse?Never.8._ you ever _(ride)a horse?Never.9.He _(keep)the book since two days ago.
13、9.He _(keep)the book since two days ago.have readhave readhas gonehas gonediddidgogowentwenthave developedhave developedgavegaveHaveHaveriddenriddenhas kepthas kept练习题练习题:1.Its a long time since we _(meet)last,isnt it?2.-I know you _(choose)a picture book among these.-Yes,Have a look at it,please.3.
14、So far,spaceships without people _(reach)the moon and some other parts of the universe.4.My father_ home for nearly three weeks.A.has gone away from B.has leftC.has been away from D.went away 5.Mr.and Mrs.Green have_in China for a week.A.been B.got C.arrived D.reached methave chosenhave reachedCA be
15、fore,by now(so far),once,twice,just,recently yet(否否/疑疑),already(肯肯),ever,never,all ones life,in/during the past/last 5 years,v1.I _(have)lunch alreadyv2.Has the train_(arrive),yet?v3.Tome _ never_(be to)China.v4.The twin _just _(see)my father.v5.The twins _(see)my father just now.v6.Many tall buildi
16、ngs _(build)in the past 5 years.have hadarrivedhasbeen tohasseensawhave been builtv用法二用法二：for+段时间段时间 since+点时间点时间 since+句子（过去时）句子（过去时）E.g.Kate has lived here for 3 years.Kate has lived here since 3 years ago.Kate has lived here since she came to China.表示过去某个时间开始的动作表示过去某个时间开始的动作或存在的状态，一直持续到现或存在的状态，一直
17、持续到现在并可能还将持续下去。动词在并可能还将持续下去。动词使用延续性动词。常与使用延续性动词。常与forfor或或sincesince引导的时间连用引导的时间连用练习题练习题:1.Its a long time since we _(meet)last,isnt it?2.-I know you _(choose)a picture book among these.-Yes,Have a look at it,please.3.So far,spaceships without people _(reach)the moon and some other parts of the univ
18、erse.4.My father_ home for nearly three weeks.A.has gone away from B.has leftC.has been away from D.went away 5.Mr.and Mrs.Green have_in China for a week.A.been B.got C.arrived D.reached methave chosenhave reachedCAvarrive/come/go to die vbecome a borrowvLeave/move vbuy openvjoin vstart/begin finish
19、/endvcatch a cold get up vget to know get out vclose wake upvgo to sleepvbecome interested in be in be deadhavekeepbe away/be out be abe in/a member ofbe openbe onbe overhave a coldbe upknowbe outbe closedbe awakebe asleep/sleepbe interested invHis father has died.(for 2 years)vThe football match ha
20、s begun.(since9:00a.m)vThe twins have joined the army.(since they are 18years old)vMy teacher has just left Nanjing.(for 3 days)His father has been dead for 2 years.The football match has been on since 9:00 a.m.The twins have been soldiers/been in the army since they are 18years old.My teacher has b
21、een away from Nanjing for 3 dayseg.他死了两年了：He died two years ago.He has been dead for two years/since two years ago.It is/has been two years since he died.Two years has passed since he died.v1.这本书我借了一个月了。I borrowed this book a month ago.It is/has been a month since I borrowed the book.I have kept the
22、 book for a month./since a month ago.A month has passed since I borrowed the book.vhave/has gone to:已经去了或在途中，还没有返回；vhave/has been to:曾今去过某地，现在已经回来了,后面可接表示“次数”的状语;vhave/has been in:表示某人“已在某地停留一段时间，现仍在那里”，其后常带表示一段时间的状语。vTom 在哪儿？他去书店买书了。v我在北京待了5年了。vJack 去过上海两次了-Where is Tom?-He has gone to the bookshop
23、 to buy some books.I have been in Beijing for 5 years.Jack has been to Shanghai twice.Correcting v1.I have borrowed the book for 3 months.v2.My bother has joined the army since he was 18.v3.Jack and Tom have lived here since 5years.v4.The film has been on since I have come to the cinema.v5.When has
24、Mr.Li caught a bad cold?have kepthas been in/been a member of the armysince 5 years ago/for 5 yearscame didcatchv6.Ten years have passed since they got married.v7.Jim has gone to Beijing for 2 years.v8.What time have the factory opened?v9.I have gone to Chunhua Middle School twicehashas been indidopenbeen toWritingThe changes in my hometown
