Unit 1 Past and presentWelcome to the unitin the pastat presentold Changzhounew Changzhou Changzhou has changed a lot in the past years.Other cities have changed over the years.the present perfect tense现在完成时现在完成时What has changed in Beijing?Houses have changed in Beijing.Houses have become taller.in the pastat present(become-became-become)people used to walk or ride a bike.used to do sth. 过去常常做某事过去常常做某事Transport has changed in Beijing.trainundergroundWhat transport do we use at present?We can take the train to far places.We can go to by train.We can take the underground to from.We can go to from by underground.coachIt is a comfortable bus for carrying people over a long way.Transporttake the coachby coachbustake the busby busTransporttaxitake the taxiby taxiplaneby air It is like a bus, but has 2 floors.Transportdouble-deckerlight railIt is a rail transportation system in cities, usually driven by electric power(电力) and runs above the ground on tracks.Bus Rapid Transit快速公交系统快速公交系统Transporthigh-speed rail高铁高铁Do Part A on P7Discussion: Advantages and disadvantagesTransportAdvantagesDisadvantagesbusbustaxitaxibikebikecheap, safe,enjoy the viewcrowded, noisy, routes are fixed,fast, comfortable,convenient(方便方便)more expensive than bus, unsafe,free, healthyslow, cant travel very far, Free talk:How did you go to school when you were a primary school student?Did he use to ?How do you go to school now? Why?Listen and answer:1. How did Millies Dad go to school?2. How does Millie go to school? He went to school by bike.She goes to school by bus. Read and answer:1. Why didnt Millies Dad go to school by bus?2. Has the bus changed over the years? Because there were too many people on the bus, and it took a long time to wait for the next one.Yes, it has. Now its easy and fast.Pair workA: How did you . when . ?B: I used to . A: Why didnt you . ?B: .A: I go to . by . Now its .Transport has changed a lot over the past 100 years.How about Eddie and Hobo?Have they changed?1.Is Hobo happy in Picture1? Why?2.How does Hobo look in picture 4? What will he say?Maybe Eddie ate Hobos food.Listen and answer:Listen and answer:1.Where was Hobos food an hour ago? It was in the bowl.2. What does Hobo think of Eddie? He thinks Eddie has changed.Read and answer1.What has Eddie done with food? Why? 2. Why does Hobo say that Eddie has changed?3. Why does Eddie say Hobo has changed?Because in the past, he used to share food with Hobo.Because he used to be kind to Eddie before.He has just eaten the food, because he was very hungry.My food _ in the _ an hour ago. But it isnt there now. Why? Eddie has just _ it because he was _. I think Eddie has _ and he _to _ food with me. I dont want to _ with Eddie any _. Im so unhappy. Can you tell me what to do?wasbowleatenhungrychangedusedplaymoreHobos diaryshare1.A friend without faults will never be found. 没有缺点的朋友是永远找不到的。 2.When a friend asks, there is no tomorrow. 朋友的要求不要拖。 3.A friend in need is a friend indeed. 患难见真情。 You used to share food with me.You used to be so kind to me.uesd to do/be过去过去(常常常常)/曾经曾经我过去常常看电视。我过去常常看电视。I used to watch TV.我曾经在学校写作业。我曾经在学校写作业。I used to do homework at school .张亮曾经是一名厨师。张亮曾经是一名厨师。Zhang Liang used to be a cook.Hobo和和Eddie曾经是好朋友。曾经是好朋友。Hobo and Eddie used to be good friends.这儿曾经有一个公园。这儿曾经有一个公园。There used to be a park here.Past Present Tense 现在完成时现在完成时 have/has + 过去分词过去分词Have you seen my food? I have just eaten it.Youve changed. see-saw-seeneat-ate-eatenchange-changed-changed1.我在常州已经住我在常州已经住13年了。年了。2.我们学英语已经我们学英语已经5年了。年了。3.Millie已经打开了电视。已经打开了电视。4.Linda已经参观过长城。已经参观过长城。5.Eddie 和和Hobo都已经变了。都已经变了。I have lived in Changzhou for 13 years.We have studied English for 5 years.Millie has turned on the TV.Linda has visited the Great Wall.Both Eddie and Hobo have changed .Translation在碗里过去常常做.和我分享食物对我如此的友好太多的人等某人/某事做.花费.时间in the bowlused to do share food with me be so kind to me too many peoplewait for sb./sth.it takes some time to do sth.交通方式的英语表达交通方式的英语表达1. 介词表达方式介词表达方式 go to . by + 交通方式（bus, train, air.） go to . on/in + a/the + 交通方式 on the bus, on a bike, in a car, on foot .2. 动词表达方式动词表达方式(take) take + a/the + 交通方式 to .e.g. 他每天骑车上学。（3种表达方式）He goes to school by bike every day.He goes to school on his bike every day.He rides a bike to school every day.特殊：walk, ride a bike步行去学校骑自行车去学校乘公车去学校walk to schoolgo to school on footride a bike to schoolgo to school by bikego to shcool on a biketake a bus to schoolgo to school by bus go to school on the busA: How shall we go to ?B: I think we can go there by becauseA: Thats not a good idea. I (dont) think Because Why not?/Shall we?B: OK, thats a good idea. Choose the suitable transport for the trip.Yancheng ZooYancheng ZooTaiwanTaiwanthe Peoples Square the Peoples Square in Shanghaiin ShanghaiPair workbike, bus, taxi, car, train, underground, plane, coach, ship.