英语必修Ⅰ北师大版UNIT2精品课件（共23张）语法.ppt

1、必修1objectiveTo use the Present Perfect and Past Simple tenses appropriately.1.Since then,she has won Wimbledon and2.the US Open twice.2.Has tennis ever caused problems between the sisters?3.The sisters father,Richard,started to train Venus and Serena when they were young children.4.The first time Ve

2、nus played in a big event was in 1996.has wonHascausedstartedplayed1.Since then,she _(win)Wimbledon and the US Open twice.2._ tennis ever _(cuase)problems between the sisters?3.The sisters father,Richard,_(start)to train Venus and Serena when they were young children.4.The first time Venus _(play)in

3、 a big event was in 1996.Fill in the blanks.Hascausedhas wonstartedplayed用括号内所给动词的正确形式填空。1.Mr.Brother is an actor.He _(appear)in several films so far.2.Sales of CDs have greatly increased since the early 1990s,when people _(begin)to enjoy the advantages of this new technology.3.Do you know our town?

4、No,this is the first time I _(be)here.has appearedbeganhave been4.We _(not meet)our new neighbors yet,so we dont know their names.5.Have you been to Australia?Yes.I _(be)there three times.And I _(go)there with my uncle for the first time.6.My friend,who _(serve)on the International Olympic Committee

5、 all his life,is retiring next month.havent methave beenwenthas servedPast Simple:to talk about finished actions or past situations and habits.He always phoned on Friday.She climbed the stairs and went to her room.always phonedclimbedwentPresent Perfect:to talk about past events and activities with

6、results or consequences in the present:发生在过去但对现在有影响的动作Ive lost my keys.(I cant open the door.)(我现在不能开门。）a single or repeated action in the past,often with time adverbials such as often,sometimes,when we dont know or are not interested in exactly when they happened.Ive walked across the Amazon jungle

7、.(我何时做的此事无关紧要）现在完成时及其时间状语before,ever,never,seldom,sometimes,often,usually,just,so far,up to now，recently1.Have you ever been to Beijing?2.Weve never heard the story before.3.Have you heard from your family recently?4.Peter has written two novels so far.5.There has been too much rain this year.6.The

8、friendly relations and cooperation between our two countries have been enhanced in the past few years.7.Up to the present everything has been successful.Look at the dialogue below and complete the rule with already or yet.A:Has Serena won Wimbledon yet?B:No,she hasnt won it yet.A:Has she won the US

9、Open yet?B:Yes,she has already won it.yetalreadyyetyeta)We use _ in affirmative sentences.b)We use _ in questions and negative sentences.alreadyyet使用现在完成时的句型1)现在完成时+since+点时间状语(名词、短语、从句,其中从句用一般过去时)2)现在完成时+for+段时间状语3)It/This is the first/其他序数词/last time+that 从句中,从句使用现在完成时。Ive lived in this town since

10、 1990.Weve known each other since we were at school.This is the first time we have seen a film inthe cinema together as a family.Its the third time Bill has phoned his girlfriend this evening.Ive lived in this town for ages.I havent seen him for ten years.现在完成时表示某一已经完成的动作对现在造成的结果或影响，强调的是现在的情况，所以不能与表

11、示过去的时间状语连用；一般过去时只表示某一动作或状态在过去发生或存在过，与现在不发生联系，它可以与表示过去的时间状语连用。现在完成时与一般过去时的区别:He has read that book.(说明他现在知道那本书的内容。)He read that book last year.(只说明他去年读过那本书。)He has gone to America.(他现在不在此地，在美国。)He went to America.(只说明他去过美国。)注：另附word文档，点此链接1.Tom in the library every night over the last three months.(2

12、011北京)A.works B.worked C.has been working D.had been working2.When I got on the bus,I_I had left my wallet at home.(2011山东)A.was realizing B.realizedB.C.have realized D.would realizeI.Multiple choice 3.-I remember you were a talented pianist at college.Can you play the piano for me?-Sorry,I the pian

13、o for years.(2012 湖南)A.dont play B.wasnt playing C.havent played D.hadnt played4.Wal-Mart,which is one of the largest American supermarket chains,_ some of its store open 24 hours on Mondays through Saturdays.(2012 安徽)A.keeps B.keep C.have kept D.had kept5.Have you heard about the recent election?Su

14、re,it _ the only thing on the news for the last three days.(2013 湖南)A.would be B.isC.has been D.will be6.I didnt think Id like the movie,but actually it _ pretty good.(2013 山东)A.has been B.was C.had been D.would be根据汉语意思完成下列句子。1.这是我曾经看过的最好的电影。This is the best film I_ ever_.2.你以前曾到国外打过网球吗？_ _ _ _ ten

15、nis abroad before?3.他最近一直在忙着写书。He _ _ _ _ a book recently.4.他已经戒烟了。一年前，他每周抽100支香烟。He _ _ _ smoking.But a year ago he _ 100 cigarettes a week.haveseenHave youever playedhas been busy writinghas givenupsmokedGrammarFocus1.现在完成时表示_发生在过去但对现在有影响的动作；发生在过去的动作但对发生的时间不感兴趣。2.现在完成时和一般过去时的区别一般过去时表示动作发生在过去，现在完成时表示动作发生在过去且延续到现在强调对现在有明显的影响。1.Do Exercises 10,11 and 12 on P27.2.Learn the words in Lesson 4 by heart.3.Underline the sentences you dont understand.