a place of natural beautya modern townMr Chen knows Sunshine Town very _ . He lived with his family he got _. Then he and his wife _ to another _ in the _ of town. Last year they moved again his children _ them a new flat . The pollution was _ then because the The pollution was _ then because the factory factory _ _ to dump its _ into the river. to dump its _ into the river. The _ in the waste killed fish and plants The _ in the waste killed fish and plants and _ the river. Later the government and _ the river. Later the government _ it was a very serious problem and took _ it was a very serious problem and took action to _ the pollution. Now the river is action to _ the pollution. Now the river is much _.much _.In some ways，he thinks life is better now. Many of his old friends _ _ other areas and he feels _ _ lonely _ _ _ _. well tillmarried movedflatcentre because bought terrible usedwaste poison polluted realized reduce cleanermovedto abitfromtime totimeThe changes to Shenzhen( ) 1. When was the photo of old Shenzhen taken?A. in the early1970s B. in the late 1970s C. in 1970 ( )2.How is todays Shenzhen?A. Its quiet and modern B. It is busy and noisyC. It is busy but still ( )3.Whats in the photo of todays Shenzhen?A. some old houses and a few small buildings.B. many tall buildings and many people in the wide streets.C. just a park. ( )4.What changes can we see in the photo of todays Shenzhen?A. Shenzhen has become a rich and important city, a place to do business. B. It has become a small village.C. We cant see any changes in the photo. ( )5.Which is right according to the dialogue?A. The changes of Shenzhen have brought some problems for people.B. Life in Shenzhen was better in the past than now.C. Shenzhen has been a good place to do business.ABBAC现在完成时是由助动词have（has）+过去 分词构成。现在完成时表过去发生的某一动作对现在 造成的影响或结果, 或表示过去已经开始，持 续到现在的动作或状态，也可以表示可能继续 下去的动作或状态。通常和 for, since引导的 时间状语连用.以及 so far（至今）, by now（直到现在）, these days, in the last ten years 等连用。 -The present perfect tense原形过过去式过过去分词词 ask plant live move carry cry play enjoy stop plan规则动词askedasked plantedplantedlivedlived movedmovedcarriedcarriedcriedcriedplayedplayedenjoyedenjoyedstoppedstoppedplannedplanned原形过过去式过过去分词词 be come go see eat give put makewrite do不规则动词was/werebeencamecomewentgonesawseenateeatengavegivenputputmademadewrotewrittendiddone选用 for和 since填空:1.We havent seen each other _ a long time.2.His father has been in the Party _ 10 years ago.3.The film has been on _ 20 minutes.4.Mr Green has worked here _ he came to China.forsincefor sinceTips:for refers to a length of time. since refers to the beginning of a period and continues to present.Fill in the blanks with correct adverbials 1) yet or alreadyA: Have you done your homework ? B: No, I havent done it .B: Yes, I have done it . 2) ever or neverA: Have you been to Hong KongB: No, I have been there before. 3) Just or just nowA: Clean the blackboard, please. B: We have cleaned it.A: When did you clean it? B: We cleaned it_.yetyetalreadyeverneverjustjust now1.He _ (know) the city since he was very young . 2. _ you _ (see) my watch ? Yes, I _ (see) it on your desk five minutes ago . 3.Last night ,it _ (rain) heavily . 4.-When _ you _ (finish) your work ? - Half an hour ago .has knownHaveseen sawraineddidfinish一般过去时表示过去某个时间发生的动作或状态，常和 表示过去的时间连用，yesterday, last night, in 1990, two days ago等。易与现在完成时混淆。 Tips:1.The boy has already gone home .（改为一般疑句）_ 2.The girl has just given it to me . （改为否定句） _ 3.They have ever visited Beijing before. （改为否定句） _Has the boy gone home yet?The girl hasnt given it to me yet.They have never visited Beijing before.1.我已完成我的家庭作业。2.我半小时前完成的家庭作业。3.陈先生自出生以来就住在阳光镇。4.陈先生五年前住在阳光镇。I already my homework.havefinishedI my homework half an hour ago.finishedMr Chen in Sunshine Town since he was born.has livedMr Chen in Sunshine Town five years ago.livedWhat do you know about your hometown? Have a discussion in your groups and try to finish the table! In the pastAt present EnvironmentTransportAdvantages ProblemsWriting :The changes to YanchengPara1: General introduction of Yancheng. Para2: In the past, what was Yancheng like? Para3: At present, whats Yancheng like? Para4: Conclusion1.Review unit 1 of 8A, 2.Finish the exercises on the sheet.