1、Unit 1 Past and present第四课时 Grammar1.To master the structure and basic usage of present perfect tense(PPT).（掌握现在完成时的基本结构、用法。）2.To learn the rules of forming the past participle of verbs.（学习动词的过去分词变化规则。）3.To learn some time expressions usually used in PPT.（学习常用在现在完成时里的时间表达方式。）Learning aims1.How long
2、has Mr.Chen lived in Sunshine Town?2.Can Mr.Chen see his old friends as often as before?He has lived here since he was born.No.Because most of his old friends have moved away.Ask and answer have+done(动词过去分词)present perfect tenseLead inIve just eaten it.Youve changed.We have lived here since then.Hav
3、e you seen my food？Have you ever moved house?Has the town changed a lot over the years?Pre-task:More examplesTry to find more sentences with have/has+done in the book.When do we use present perfect tense?While-taskTask1:Learn by yourselvesWe use the present perfect tense to talk about an action that
4、 started in the past and continues to the present.表示过去开始，现在还在继续的动作。We use the present perfect tense to talk about an action that happened in the past and has a connection with the present.表示过去发生的或已完成的动作对现在造成的影响或结果。Discuss:Whats the basic structure of PPT?Subject(主语)have/has+(not)（助动词）past participle
5、(过去分词)I/You/We/They have(not)moved.He/She/It has(not)moved.Task2:Group workHave/Has+主语+动词的过去分词？HaveI/you/we/theymoved?Hashe/she/itYes，I/you/we/theyhave.he/she/ithas.No，I/you/we/theyhave.not/havent.he/she/ithas not/hasnt.一般疑问句already:表示已经发生（肯定）ever:表示“曾经”（否定句/疑问句）for:表示一段时间just:表示“刚刚”never:表示“从不”（否定句
6、）recently:表示“最近”since:表示“自-以后”yet:表示“已经”或者“还没有”（疑问句/否定句）Adverbs of time1.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.have hadarrivedhasbeen tohasseensawExercisesWe use the simple past tense to
7、talk about what happened at a definite time in the past.（一般过去时谈论在过去的特定时间发生的事）When do we use the simple past tense?How to form the past participle of verbs?Most verbs+edwashwashedVerbs ending in e+dlivelivedVerbs ending in a consonant+y-y+iedstudystudiedShort verbs ending in a vowel+a consonantdouble
8、 the consonant+edstopstoppedTask3:Learn the rulesrepairfinishmoveliverepaired repairedfinished finishedmoved moved lived livedverbed以e结尾dstopplanstopped stoppedplanned planned双写edstudy hurrystudied studiedhurried hurried去yied写出下列动词的过去式和过去分词begive seemake put comewritewas/were beengave givensaw seenm
9、ade madeput putcame comewrote written注:不规则动词见书上122页不规则动词表.写出下列动词的过去式和过去分词7 send8 watch9 say10 grow11 hit12 enjoy1 borrow2 hope3 make4 get5 plan6 cryborrowedhopedmadegotplannedcriedsentwatchedsaidgrownhit enjoyedTask4:Finish Part A on page 141.They _(finish)their homework already.2.John _never _(visi
10、t)China.3.Mr.Li _ (repair)over ten bicycles since Monday.4.We_ (not see)each other for years.5.My parents _ (not come)back yet.6.Our teacher _(teach)us a lot about the history of China.have finished has visitedhas repairedhavent seenhas taughthavent comeTask5:Finish Part B on page 14M:_ you _(see)an
11、y films recently,Sandy?S:No,I havent.What about you?M:Well,I _(see)one last Saturday.S:What is it about?M:Its about the changes in Beijing over the past century.Have seensawTask6:Finish Part C on page 14From this film,I _ (learn)more about Beijings past and present.S:Oh,I think I _ (hear)about the f
12、ilm.Do you plan to see it again?M:Yes,Id like to.have heardhave learntTask6:Finish Part C on page 141 She _(wait)for two hours already.2 They _(not finish)the project yet.3 _ you _(hear)from my sister recently?4 Mark _(be)there for two days.5 _ they ever _ (stay)at home alone?6 I _ never _(watch)thi
13、s film.7 Daniel _ just _(arrive)home.8 We _(not eat)anything since then.has waitedhavent finishedHave heardhas beenHavestayed watchedhavehasarrivedhavent eatenTask7:Fill in the blanks一、写出下列词的过去分词1.be_ 2.become_3.begin_ 4.blow_5.build_ 6.choose_7.cost_ 8.do _9.drink_ 10.eat_11.drive_ 12.fall_13.fly_
14、14.forget_15.know_fallenknownforgottenflownbecomebegunbuiltcostdonebeen chosenblowndrunkeatendriven二、根据句意及中文提示完成单词1.I have only started to learn French _（近来）2.-Has the train arrived _(还,仍)?-Yes,it arrived ten minutes ago.3.How long has Mr Smith_(教)English so far?4.There have been great_(改变)in Americ
15、a since I left there.5.No country has made such progress as Chinese in the_（过去的）thirty years.recentlypastchangestaughtyet三、用括号中所给动词的适当形式填空1.He _(wait)for an hour.2.I _(not finish)the work yet.3._ you _(know)him since then?4.I _(not hear)from my brother for a long time.5.We _(be)there many times sinc
16、e 3 years ago.have beenhas waitedhavent finishedHave knownhavent heard四、单项选择()1.I havent seen you _ last Friday A.for B.since C.fromD.on()2.Oh,you _ the computer game for two hours.Its bad for your eyes.Stop,please!A.playedB.have playedC.were playing D.play()3.I wont go to the show because I _ my ti
17、cket.A.loseB.dont lose C.have lostD.will lostBCB()5.-_have you been here?-3 years.A.How often B.How longC.How farD.HowB()4.-_ my dictionary?-Yes.I saw it on your desk a moment ago.A.Have you seenB.Do you see C.Had you seen D.Would you seenA()6-May I go to play tennis with you,Dad?-_you _your homewor
18、k yet?A.Are,finishing B.Did,finish C.Will,finish D.Have,finished()7.-Do you know the movie Lost In Thailand?-Yes,I_it twice.Its funny.A.saw B.see C.have seen D.will seeDC()8.Things_a lot since the boy finished school.A.has changedB.have changedC.changed D.was changed()9.Lilys grandpa has lived here_.A.10 years ago B.almost 10 year C.since 1994 D.last year BCByeBye!
