江苏省南京市长城中学八年级英语下册 Unit 1 Past and Present Grammar课件.ppt

8B Unit 1 Past and Present Grammar 1. 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学习常用在现在完成时里的时间表达方式Learning aims1.How long 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.Lead-in Ask and answer have + done(动词过去分词)I've just eaten it.You've changed.We have lived here since then.Have 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 yourselvesWe use the present perfect tense to talk about an action that started in the past and continues to the present.表示过去开始，现在还在继续的表示过去开始，现在还在继续的动作。

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PastpresentEddie has eaten my food. Discuss: What's the basic structure of PPT?Subject (主语主语)have / has + (not)（（助动词助动词））past participle(过去分词过去分词) I/You/We/They have (not) moved. He/She/It has (not) moved. Task2: Group workHave/ Has + + 主语主语 + + 动词的过去分词？动词的过去分词？HaveI/you/we/theymoved?　　Has　　he/she/itYes，，I/you/we/they　　have.he/she/it　　has.　　No，，I/you/we/they　　have.not/haven’t.he/she/it　　has not/hasn’t.　　 一般疑问句一般疑问句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）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 time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.have hadarrivedhasbeen tohasseensaw ExercisesWe use the simple past tense to 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）一般过去时谈论在过去的特定时间发生的事） How to form the past participle of verbs?Most verbs+ edwash→washedVerbs ending in e+ dlive→livedVerbs ending in a consonant + y- y + iedstudy→studiedShort verbs ending in a vowel + a consonantdouble the consonant + edstop→stoppedTask3: Learn the rulesmovelive:repairfinish repaired repairedfinished finishedmoved moved lived lived verb＋ed以e结尾＋dstopplanstopped stopped planned planned双写＋edstudy hurrystudied studiedhurried hurried去y＋ied 写出下列动词的过去式和过去分词写出下列动词的过去式和过去分词写出下列动词的过去式和过去分词写出下列动词的过去式和过去分词:begive seemake put comewritewas/were beengave givensaw seenmade madeput putcame comewrote written注注:不规则动词见书上不规则动词见书上122页不规则动词表页不规则动词表.1 borrow2 hope3 make4 get5 plan6 cry7 send8 watch9 say10 grow11 hit12 enjoy1 borrow2 hope3 make4 get5 plan6 cryborrowedhopedmadegotplannedcriedsentwatchedsaidgrownhit enjoyedTask4: Finish Part A on page 141 They __________ (finish) their homework already.2 John _____never _____ (visit) 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 repairedhaven’t seenhas taughthaven’t comeTask5: Finish Part B on page 14M: ________ you ________ (see) any films recently, Sandy?S: No, I haven’t. What about you?M: Well, I ________ (see) one last Saturday.S: What is it about?M: It’s about the changes in Beijing over the past century. From this film, I ___________ (learn) more about Beijing’s past and present.S: Oh, I think I ___________ (hear) about the film. Do you plan to see it again?M: Yes, I’d like to.Have seensawhave heardhave learntTask6: Finish Part C on page 141 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) this film .7 Daniel ______ just _________ (arrive) home.8 We _____________(not eat) anything since then.has waitedhaven’t finishedHave heardhas beenHavestayed watchedhavehasarrivedhaven’t eatenTask7: Fill in the blanksTask2: Feedback what we have learnt todayPost-taskTask1: Exercises in class一、写出下列一、写出下列词的的过去分去分词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. forget____________15. know___________fallenknownforgottenflownbecomebegunbuiltcostdonebeen chosenblowndrunkeatendriven二、根据旬意及中文提示完成二、根据旬意及中文提示完成单词1. I have only started to learn French _______（近（近来）来）2. ---Has the train arrived ____________ (还,仍仍)? ---Yes, it arrived ten minutes ago.3. How long has Mr Smith____________ (教教)English so far?4. There have been great____________ (改改变)in America since I left there.5. No country has made such progress as Chinese in the ____________（（过去的）去的）thirty years.recentlypastchangestaughtyet三、用括号中所三、用括号中所给动词的适当形式填空的适当形式填空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 since 3 years ago.have beenhas waitedhaven't finishedHave knownhaven't heard四、四、单项选择( ) 1. I haven’t seen you _____ last Friday A. forB. sinceC. fromD. on( ) 2. Oh, you ____ the computer game for two hours. It’s bad for your eyes. Stop, please!A. played B. have played C. were playing D. play ( ) 3.I won’t go to the show because I ____ my ticket. A. loseB. don’t lose C. have lostD. will lost( ) 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 seenBACB( ) 5. ---_____have you been here? ---3 years. A. How often B. How long C.How farD. How( ) 6 ---May I go to play tennis with you, Dad? ---______you ______your homework yet?A. Are, finishingB. Did, finish C. Will, finish D. Have, finished( ) 7. ---Do you know the movie Lost In Thailand? ---Yes, I____________it twice. It’s funny. A. sawB. seeC. have seen D. will seeBDC( ) 8. Things____________a lot since the boy finished school. A. has changedB. have changedC. changed D. was changed( ) 9. Lily’s grandpa has lived here____________. A.10 years ago B. almost 10 year C. since 1994 D. last yearBC。