教育专题：教育专题：现在完成时 (2).ppt

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1、现在完成时复习现在完成时复习现在完成时的构成：现在完成时的构成：have/has+V(过去分词过去分词)注：动词过去分词的构成分为注：动词过去分词的构成分为规则变化规则变化和和不规则变不规则变规则变化的动词过去分词与规则变化的动词过去分词与过去式是一样的，不规则变化的动词须过去式是一样的，不规则变化的动词须特殊记忆。特殊记忆。He/She/It has I/We/You/They have1.I _ (finish)homework.2.He _ (learn)English for 3 years.have finishedhas learned规则动词过去分词的构成规则动词过去分词的构成构

2、成规则构成规则2.以不发音的以不发音的e结尾的动词，结尾的动词，直接加直接加-d3.末尾只有一个辅音字母的末尾只有一个辅音字母的 重读闭音节词，先双写这重读闭音节词，先双写这 个辅音字母，再加个辅音字母，再加-ed 4.结尾是结尾是“辅音字母辅音字母+y”的动词，的动词，先变先变“y”为为“i”再加再加-ed look play liveHope stopPlanstudy carryLookedCarriedplayedLivedHopedPlannedStopped Studied1.一般在动词后直接加一般在动词后直接加-ed不规则动词过去分词的构成不规则动词过去分词的构成1.三个主要动词

3、三个主要动词 is,ambe arewaswerebeenhave/hashadhaddo/doesdiddone2.AAA型型（三者一致）（三者一致）cut cut cutlet let letcome came comebecome became become3.ABA型型（过去分词与原形一致）（过去分词与原形一致）bring brought broughtfind found found4.ABB型型（过去分词与过去式一致）（过去分词与过去式一致）eat ate eatengive gave given5.ABC型型（三者不一致）（三者不一致）不规则动词过去分词的构成不规则动词过去分词的

4、构成1.He has finished his homework.（变否定句）He hasnt finished his homework.2.They have visited China before.（变一般问句并作肯定答）Have they visited China before?Yes,they have.（句式变换）（句式变换）(No,they havent)1.现在完成时的第一种用法是什么？2.常用的时间语状有哪些？3.你能说出already和yet有哪些区别？现在完成时（一）1.表示过去发生的动作对现在造成的影响和结果。2.常见时间状语有：already,yet,ever,n

5、ever,just,before等3.already和yet的区别：already多用于肯定句，yet多用于否定句和疑问句注意：如果肯定句中含有注意：如果肯定句中含有already或或just，在变否定句和疑问句时，要把居中的在变否定句和疑问句时，要把居中的already或或just转换成转换成yet并置于句末并置于句末。1.I have already seen the film.（变否定句）（变否定句）I havent seen the film yet.2.I have already finished my homework.(变变一般疑问句）一般疑问句）Have you finish

6、ed your homework yet?3.Mother has just cleaned the house.（变否定句）（变否定句）Mother hasnt cleaned the house yet.1.I (do)my homework already.2.He (not finish)his homework yet.3.We never (see)this book.4.Mother just (clean)the house.5.Sally (visit)China before.Have doneHasnt finishedhaveseenhascleanedHas visi

7、ted1.现在完成时的第二种用法是什么？2.常用的时间状语有哪些？3.你能说出for和since有什么不同？现在完成时(二)1.表示过去发生的动作，一直延续到现在，并且有可能继续延续下去。2.常用的时间状语：通常和for,since引导的时间状语连用。3.for与since的区别:(1)for+一段时间 for a week,for 3 years,for a long time等(2)since+时间起点 since+一段时间+ago since+从句（从句通常用一般过去时）since 2 oclock,since 3 years ago,since I came here.等。注意：对fo

8、r和since引导的时间状语提问时，必须用How long.1.I have lived here for 10 years.(划线提问）How long have you lived here?How long has she stood here?2.She has stood here since 2 hours ago.选用for和since填空:1.We havent seen each other_a long time.2.His father has been on _10 years ago.3.The film has been on _20 minutes.4.Mr Gr

9、een has worked here _he came to China.5.His grandpa has been dead _several years.forforforsincesinceHave been to 与与 have gone to的区别的区别 Have been to 曾经去过某地（已返回）have gone to 去了某地（还没有回 True or false?1.I have gone to Japan before.()2.Beijing is very beautiful.I have been to there twice.()3.His father ha

10、s gone to Beijing.He will be back next week.()4.Where have you gone?()FTFFbeenbeen你能说出一般过去时与现在完成时的区别吗？2.现在完成时常用的时间状语有哪些：现在完成时，强调这一动作产生的结果对现在现在完成时，强调这一动作产生的结果对现在的影响，与现在有关。的影响，与现在有关。一般过去时，仅仅表示在过一般过去时，仅仅表示在过去某一时刻曾发生过这一动作，与现在无关。去某一时刻曾发生过这一动作，与现在无关。一般一般过去时与现在完成时有常用的时间状语：过去时与现在完成时有常用的时间状语：1.一般过去时常用的时间状语有哪

11、些：yesterday,last year,two days ago,just now,in+过去的某一年等。already,yet,ever,never,just,before,so far,for+一段时间,since+时间起点等。1.He _(work)in our school for one year.2.He _(come)to our school last year/in 2002.3.They _(cook)the supper already.4.They _(cook)the supper half an hour ago.注意：在现在完成时的肯定句中，非延续性的动词不能

12、和for.since引导的时间状语连用，要连用必须改成延续性动词。Has workedcameHave cookedcookedbuy-have borrow-keepleave-be away(from)die-be dead fall ill-be ill finish-be overcome-be in/be here join-be in/be a member ofbegin-be on become-be True or false?1.I have bought this book for five years.()I have had this book for five ye

13、ars.()2.The old man has died for ten years.()常见的转换常见的转换FFThaddead1.The old man has been dead for ten years.Jim with his parents _ abroad.They _ back in two weeks.A.have gone；will come B.has gone；will come C.have been to；have come D.has been；come 2.I have finished my homework.When_ you_ it?A.have;fin

14、ished B.do;finish C.did;finish D.will;finish3.I _ my mobile phone since five years ago.A.bought B.have bought C.had bought D.have had中考真题中考真题4.-Have you seen Bill?-Yes,he to the library.A.has gone B.had gone C.has bee5.Do you know him well?Sure.We friends since ten years ago.A.were B.have been C.hav

15、e become D.have made6.May I speak to John?Sorry,he Japan.But he in two days.A.has been to,will come back B.has gone to,will be back C.has been in,would come back D.has gone to,wont come back 中考真题中考真题7.Lucy,_ you _ your ticket?Not yet.A.did,find B.have,found C.has,found D.do,find 8.I this book for tw

16、o weeks.I have to return it now.A.borrowed B.have borrowed C.kept D.have kept9.It _ten years since we _in Beijing.A.was,met B.has been,met C.was,meet D.is,meet中考真题中考真题1.I _ the League for 5 years so far.A.joined B.have joined C.have been in2.The factory _since the February of 1988.A.has been open B.

17、has opened C.was open D.opened3.Mary and Rose _ friends since they met in 2000.A.have made B.have been C.made D.have become4.The meeting _for a week.A.has finished B.has ended C.has been over D.ended5.Miss Gao _ this school for nearly 5 years.A.has been in B.has come to C.has taught D.got to6.I _ ho

18、me for a week.A.have returned B.have been back C.returned D.came back7.He _ the car for a week.A.bought B.has bought C.has had 8.-How long _ you _ ill?-Two weeks.A.did fall B.have,fell C.have,been D.do fall9.The bus _on the road for 2 hours so far.A.has stopped B.stopped C.has been D.stops当堂检测句式变换：（

19、5分，每空1分）1.Jack has visited China before.（变否定句）Jack _visited China before.2.They have come into the classroom.（变一般疑问句）_ _ come into the classroom?3.He has been here for 12 years.(划线提问)_ _has he been here?hasntHavetheyHowlong用所给词的正确形式填空。（3分，每空一分）1.I _ (live)here for 5 years.2.I _ (live)here in 2003.3.He _ (not return)the book yet.三判断正误。（2分 每题1分）1.我已经买这本书3年了。I have bought the book for 3 years.()2.他去过北京。He has gone to Beijing.()have livedlivedhasnt returnedFhadFbeen 写一段短文，用现在完成时描述自己的经历。（不少于60字）