1、8B Unit 1 Past and Present Grammar 1. To master the structure and basic usage of present perfect tense(PPT). （掌握現(xiàn)在完成時(shí)的基本結(jié)構(gòu)、用法。）2. To learn the rules of forming the past participle of verbs.（學(xué)習(xí)動(dòng)詞的過(guò)去分詞變化規(guī)則。）3. To learn some time expressions usually used in PPT.（學(xué)習(xí)常用在現(xiàn)在完成時(shí)里的時(shí)間表達(dá)方式。）Learning aimsHow lon

2、g 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(動(dòng)詞過(guò)去分詞)present perfect tenseIve just eaten it.Youve changed.We have lived here since

3、 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 yourselvesWe use the present perfect tense to talk about

4、an action that started in the past and continues to the present.表示過(guò)去開(kāi)始，現(xiàn)在還在繼續(xù)的動(dòng)作。 We use the present perfect tense to talk about an action that happened in the past and has a connection with the present.表示過(guò)去發(fā)生的或已完成的動(dòng)作對(duì)現(xiàn)在造成的影響或結(jié)果。PastpresentEddie has eaten my food. Eddie ate the food and now Hobo has

5、 nothing to eat.We also use the present perfect tense to talk about how many times an action has happened till now.談?wù)搫?dòng)作已經(jīng)發(fā)生了很多次。I have already read this book many times.We use the simple past tense to talk about what happened at a definite time in the past.（一般過(guò)去時(shí)談?wù)撛谶^(guò)去的特定時(shí)間發(fā)生的事）Discuss: Whats the bas

6、ic structure of PPT?Subject (主語(yǔ))have / has + (not)（助動(dòng)詞）past participle(過(guò)去分詞) I/You/We/They have (not) moved. He/She/It has (not) moved. Task2: Group workHave/ Has + 主語(yǔ) + 動(dòng)詞的過(guò)去分詞？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/has

7、nt. 一般疑問(wèn)句Adverbs of timealready: 肯定句，表示已經(jīng)發(fā)生yet: 疑問(wèn)句/否定句，表示“已經(jīng)”或者“還沒(méi)有”ever: 疑問(wèn)句，表示“曾經(jīng)”for: 表示一段時(shí)間just: 表示“剛剛”never: 表示“從不”recently: 表示“最近”since: 表示“自以后” 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

8、 father just now.have hadarrivedhasbeen tohasseensaw Exercises 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 the consonant + edstopstoppedTask3: Learn

9、 the rulesmovelive:repairfinish repaired repairedfinished finishedmoved moved lived lived verbed以e結(jié)尾dstopplanstopped stopped planned planned雙寫(xiě)edstudy hurrystudied studiedhurried hurried去yied 寫(xiě)出下列動(dòng)詞的過(guò)去式和過(guò)去分詞寫(xiě)出下列動(dòng)詞的過(guò)去式和過(guò)去分詞:begive seemake put comewritewas/were beengave givensaw seenmade madeput putcam

10、e comewrote written注:不規(guī)則動(dòng)詞見(jiàn)書(shū)上122頁(yè)不規(guī)則動(dòng)詞表.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 141 They _ (finish) their homework already.2 John _never

11、_ (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 repairedhavent seenhas taughthavent comeTask5: Finish Part B on page

12、14M: _ you _ (see) any 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. From this film, I _ (learn) more about Beijings past and present.S: Oh, I think I _ (hear) about the film.

13、Do you plan to see it again?M: Yes, Id like to.Have seensawhave 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

14、 _ never _ (watch) this film .7 Daniel _ just _ (arrive) home.8 We _(not eat) anything since then.has waitedhavent finishedHave heardhas beenHavestayed watchedhavehasarrivedhavent eatenTask7: Fill in the blanksTask2: Feedback what we have learnt todayPost-taskTask1: Exercises in class一、寫(xiě)出下列詞的過(guò)去分詞1.

15、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、根據(jù)旬意及中文提示完成單詞1. I have only started to learn French _（近來(lái)）2. Has the train arrived _ (還,仍

16、)? Yes, it arrived ten minutes ago.3. How long has Mr Smith_ (教)English so far?4. There have been great_ (改變)in America since I left there.5. No country has made such progress as Chinese in the _（過(guò)去的）thirty years.recentlypastchangestaughtyet三、用括號(hào)中所給動(dòng)詞的適當(dāng)形式填空1. He _ (wait) for an hour.2. I _ (not fin

17、ish) 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 waitedhavent finishedHave knownhavent heard四、單項(xiàng)選擇( ) 1. I havent seen you _ last Friday A. forB. sinceC. fromD. on( ) 2. Oh, you _ the com

18、puter game for two hours. Its bad for your eyes. Stop, please!A. played B. have played C. were playing D. play ( ) 3.I wont go to the show because I _ my ticket. A. loseB. dont loseC. 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 seenB ACB( ) 5. _have you been here? 3 years. A. How oftenB. How longC.How farD. How( ) 6 May I go to play tennis with you, Dad? _you _your homework yet?A. Are, finishingB. Did, finis