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 aims1.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)Ive just eaten it.Youve 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 yourselvesWe 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. Eddie ate the food and now Hobo has nothing to eat.We also use the present perfect tense to talk about how many times an action has happened till now.谈论动作已经发生了很多次。谈论动作已经发生了很多次。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）Discuss: Whats 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 workHave/ Has + + 主语主语 + + 动词的过去分词？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. 一般疑问句一般疑问句Adverbs of timealready: 肯定句，表示已经发生yet: 疑问句/否定句，表示“已经”或者“还没有”ever: 疑问句，表示“曾经”for: 表示一段时间just: 表示“刚刚”never: 表示“从不”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 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 the rulesmovelive:repairfinish repaired repairedfinished finishedmoved moved lived lived verbed以e结尾dstopplanstopped stopped planned planned双写edstudy hurrystudied studiedhurried hurried去yied 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 141 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 repairedhavent seenhas taughthavent comeTask5: Finish Part B on page 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. 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 _ 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、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 waitedhavent finishedHave knownhavent heard四、四、单项选择( ) 1. I havent seen you _ last Friday A. forB. sinceC. fromD. on( ) 2. Oh, you _ the computer 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 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. Its 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. Lilys grandpa has lived here_. A.10 years ago B. almost 10 year C. since 1994 D. last yearBC Translate these sentences1 南京自南京自1995年以来发生了很大的变化年以来发生了很大的变化.2 南京已经成为一个现代化的城市南京已经成为一个现代化的城市.3你们在这个乡村住了多久了你们在这个乡村住了多久了?4他结婚了吗他结婚了吗?是的是的,他他们们6年年前结婚了前结婚了.Nanjing has changed a lot since 1995.Nanjing has turned into a modern city.How long have you lived in the village?Has he got married?Yes, he got married six years ago.