2014年秋九年级英语全册Unit13We’retryingtosavetheearth（第2课时）课件（新版）人教新目标版.ppt

1、Unit 13 Were trying to save the earth 第二课时 ( Focus on grammar),情境引入 Leading-in,判断下列句子中使用了什么时态及情态动词。,1. We are trying to save the earth. 2. The river used to be so clean. 3. It was considered the nicest river in the town. 4. The air has become really polluted. 5. We should help savew the sharks.,Answ

2、ers:,1. 现在进行时 2. used to 3. 一般过去时的被动语态 4. 现在完成时 5. should,活动探究,Fill in the blanks,You can discuss with your parnters,Answers:,延伸拓展,Fill in blanks with the correct forms of verbs. Interviewer: _ you ever _ (take ) part in an environmental project? Ken: Yes, I have. I _ (help ) with a Clean-Up Day las

3、t year. It was _ (consider) the biggest clean-up project this city _ ever _ (have). Interviewer: How many people _ (take ) part? Ken: I _ ( think) more than 1,000 people _ (come) to help out. Interviewer: Thats fantastic! I guess everyone in this city is _ (try) to improve the environment. Ken: Yes,

4、 evertone should _(play ) a part in keeping the city clean.,Possible answers: Have taken, helped, considered, had had, took, think, came, trying, play,Fill in blanks with proper modal verbs. can would could have to should might/may must,When it comes to saving the earth, people _ think that big thin

5、gs _be done. However, many forget that saving the earth begins with small things. For example, You _ save electricity by turning off the lights when you leave a room. You _ also use paper or reusable bags instead of plastic bags. In some stores, you now _ pay for plastic bags. I think this is a grea

6、t idea. And instead of driving to school or work, you _ ride your bike or walk. If its far, you _ take the bus. All these small things _ add up and became big things that _ improve the environment. We cant afford to wait any longer before taking action.,Possible answers: may, cant, can, could, have

7、to, may/might, should ,would, must,随堂练习,Fill in blanks using proper forms of given words. 1、Ill give the book to him as soon as he _ back(come). 2、_ the baby _ crying yet? (stop) 3、I dont know whether mother_ me to beijing next month.(take) 4、she _ on her coat and went out. (put),comes,Have,stopped,

8、will take,put,5、 “What are they doing?” “They_ ready for the sports meeting.” (get) 6、The boy asked his mother_ him go and play basketball.(let) 7、Im sorry to keep you _ for a long time. (wait) 8、It _ (take) him half an hour_ (finish) his homework yesterday.,are getting,to let,waiting,took,to finish

9、,9、If it _ an interesting film, well see it tomorrow. (be) 10、They usually _ (do) their homework after supper. 11、Listen! who_ (sing) in the next room now? 12、_ (be) your parents in shanghai last year?,is,do,is singing,Were,13、Mr. yu _ (teach) us maths since 1982. 14、They will have a trip (旅行) to th

10、e great wall if it _ (not rain) tomorrow. 15、Li Ming often_ (listen) to the radio in the morning.,have taught,doesnt rain,listens,Choose the best answers. 1-May I stop my car here? -No, you_. A. cant B. mustnt C. neednt D. dont have to,A,2. -Must we clean the house now? -No, you _. neednt B. may not C. mustnt D. cant 3. Man _die without water. A. will B. can C. need D. shall,A,A,4. You_ return the book now. You can keep it next week if you like. cant B. mustnt C. neednt D. may not 5. -Johnny, you_ play with the knife, you_ hurt yourself. wont.cant B. mustnt.may C. shouldnt, must D