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1、Present perfect tense 现在完成时,构成:用法一：,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,1,Present perfect tense 现在完成时构成,现在完成时:have/has+过去分词 1)表示到现在为止已经完成或刚刚完成的动作。Now we have planted all the trees.He has just come back.,2,现在完成时:2,2)表示过去发生的动作,但强调结果或对现在的影响。Have you had your su
2、pper?I have read the book twice already.在以上两种用法中常跟already,notyet,never,just,before,ever,recently等时间继续下去的状语。,3,3,3)表示过去已经开始,持续到现在,也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。He has studied English for 6 years.Mary has been busy since she came back from Hangzhou.,4,3)表示过去已经开始,持续到现在,也许还会继续下去的动,过去分词的构成,1.直接加-ed。如
3、：play-played2.以字母e结尾的直接加d。如：name-named3.以辅音字母加y结尾的，变y为i加ed。如：carry-carried4.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-stopped,5,过去分词的构成 1.直接加-ed。如：play-playe,I have eaten my lunch.,She has eaten her lunch.,He has eaten his lunch.,肯定句,They have eaten their lunch.,6,I have eaten my lunch.She has,I have no
4、t(havent)seen the film.,She has not(hasnt)seen the film.,现在完成时的否定形式：have not(havent)+过去分词 has not(hasnt)+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,7,I have not(havent)seen the,Ive already had dinner.I _ _ dinner _.2.He has just f
5、inished his homework.He _ _ his homework _.3.Mums cooked the dinner.Mum _ _ the dinner.4.Susans learned English at school.Susan _ _ English at school.,havent,had,yet,hasnt,finished,yet,hasnt cooked,hasnt,learned,把下列句子改为否定句,8,Ive already had dinner.haven,Have you eaten your breakfast?,现在完成时的一般疑问句形式Ha
6、ve/has 提前+过去分词,Have you known Sandy for a long time?Yes,I have/No,I havent.know-knownHas she eaten anything since 9:00 a.m.Yes,she has/No,she hasnt.eat-eaten,疑问句,9,Have you eaten your breakfast?,Ive already had dinner.2.He has just finished his homework.3.Mums cooked the dinner.4.Susans learned Engl
7、ish at school.,Have you had dinner yet?,Has he just finished his homework?,Has mum cooked the dinner?,Has Susan learned English at school?,把下列句子改为一般疑问句,10,Ive already had dinner.Have y,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，不能和表示过去的时间状语连用，如yesterday,last night,three weeks ago,in1990等.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。e
8、g-I have seen the film.eg-I saw the film last week.eg-He has lived here since 1993.eg-He lived here in 1993.,11,分清与一般过去时的用法11,1.都表示过去发生的事2.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；3.一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,yesterday,etc.）,present,past,I have lived here for two years,I lived there 2 years ago,12,1.
9、都表示过去发生的事presentpastI have l,eg.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.,13,eg.1.He had his breakfast at,动词填空：1._ you _(clean)the room?Yes,we_(do)that already.When _ you _(do)it?We _(do)it an hour ago.2._ he _(see)th
10、is film yet?Yes.When _ he _(see)it?He _ it last week.3.How many times _you_(come)here?Once.,Have,cleaned,have done,did,do,did,Has,seen,did,see,saw,have,come,14,动词填空：Havecleanedhave donediddo,4.I _(read)the novel twice.Its interesting.5.She _(go)to Pairs,hasnt she?Yes.How _ she _(go)there?She _(go)th
11、ere by air.6.So far,many countries _(develop)their software programs.7.Mr Chen _(give)up smoking last year.8._ you ever _(ride)a horse?Never.9.He _(keep)the book since two days ago.,have read,has gone,did,go,went,have developed,gave,Have,ridden,has kept,15,4.I _(read)the novel,练习题:1.Its a long time
12、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 universe.4.My father_ home for nearly three weeks.A.has gone away from B.has leftC.has been away from D.went aw
13、ay 5.Mr.and Mrs.Green have_in China for a week.A.been B.got C.arrived D.reached,met,have chosen,have reached,C,A,16,练习题:methave chosenhave reach,Adverbs of time,before,by now(so far),once,twice,just,recently yet(否/疑),already(肯),ever,never,all ones life,in/during the past/last 5 years,17,Adverbs of t
14、ime befor,Exercises,1.I _(have)lunch already.2.Has the train_(arrive),yet?3.Tome _ never_(be to)China.4.The twin _just _(see)my father.5.The twins _(see)my father just now.6.Many tall buildings _(build)in the past 5 years.,have had,arrived,has,been to,has,seen,saw,have been built,18,Exercises1.I _(h
15、ave),用法二：for+段时间 since+点时间 since+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或存在的状态，一直持续到现在并可能还将持续下去。动词使用延续性动词。常与for或since引导的时间连用,19,用法二：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,练习题:1.Its a long time since we _(meet)las
16、t,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 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.Gre
17、en have_in China for a week.A.been B.got C.arrived D.reached,met,have chosen,have reached,C,A,20,练习题:methave chosenhave reach,常见非延续性动词和延续性动词的转变,arrive/come/go to die become a borrowLeave/move buy openjoin start/begin finish/endcatch a cold get up get to know get out close wake upgo to sleepbecome in
18、terested in,be in,be dead,have,keep,be away/be out,be a,be in/a member of,be open,be on,be over,have a cold,be up,know,be out,be closed,be awake,be asleep/sleep,be interested in,21,常见非延续性动词和延续性动词的转变arrive/come/g,Exercises,His father has died.(for 2 years)The football match has begun.(since9:00a.m)Th
19、e twins have joined the army.(since they are 18years old)My 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 been away from Nanjing
20、for 3 days,22,Exercises His father has died.,重点句型:It is/has been+段时间+since从句 段时间+has passed+since从句,eg.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.,23,重点句型:It is/has been+段时间+sinc,1.这本书我借了一个
21、月了。,I borrowed this book a month ago.,It is/has been a month since I borrowed the book.,I have kept the book for a month./since a month ago.,A month has passed since I borrowed the book.,24,1.这本书我借了一个月了。I borrowed this,Have/has gone tohave/has been to have/has been in,have/has gone to:已经去了或在途中，还没有返回
22、；have/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;have/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。,25,Have/has gone tohave/has been,Exercises,Tom 在哪儿？他去书店买书了。我在北京待了5年了。Jack 去过上海两次了,-Where is Tom?-He has gone to the bookshop to buy some books.,I have been in Beijing for 5 years.,Jack has been to S
23、hanghai twice.,26,Exercises Tom 在哪儿？他去书店买书了。-Wh,Correcting,1.I have borrowed the book for 3 months.2.My bother has joined the army since he was 18.3.Jack and Tom have lived here since 5years.4.The film has been on since I have come to the cinema.5.When has Mr.Li caught a bad cold?,have kept,has been
24、 in/been a member of the army,since 5 years ago/for 5 years,came,did,catch,27,Correcting 1.I have borrowed,6.Ten years have passed since they got married.7.Jim has gone to Beijing for 2 years.8.What time have the factory opened?9.I have gone to Chunhua Middle School twice,has,has been in,did,open,been to,28,6.Ten years have passed since,Writing,The changes in my hometown,29,WritingThe changes in my homet,
