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1、Unit 13,需要更完整的资源请到 新世纪教育网 - ,Unit 13需要更完整的资源请到 新世纪教育网 -,Unit 13Were trying to save the earth!,需要更完整的资源请到 新世纪教育网 - ,Unit 13需要更完整的资源请到 新世纪教育网 -,Section A 3Grammar Focus-4c,需要更完整的资源请到 新世纪教育网 - ,Section A 3需要更完整的资源请到 新世纪教,Revision,不同种类的污染2. 河底3. 把垃圾扔到河里4. 在中起作用,different kinds of pollution,the bottom of
2、 the river,throw rubbish into the river,play a part in,I. Check if you know these phrases.,需要更完整的资源请到 新世纪教育网 - ,Revision 不同种类的污染different kind,5. 在中国南部6. 对有害7. 在顶部8. 海洋生态系统,in southern China,be harmful to,at the top of,the oceans ecosystem,需要更完整的资源请到 新世纪教育网 - ,5. 在中国南部in southern Chinabe ha,II. Tran
3、slation.,1. 甚至河底都满是垃圾。2. 这个方法不仅残酷还对环境有害。,Even the bottom of the river was full of rubbish.,This method is not only cruel, but also harmful to the environment.,需要更完整的资源请到 新世纪教育网 - ,II. Translation.1. 甚至河底都满是垃圾。E,3. 鲨鱼处于海洋食物链的顶部。4. 许多人相信鱼翅对健康有好处。,Sharks are at the top of the food chain in the oceans e
4、cosystem.,A lot of people believe that sharks fins are good for health.,需要更完整的资源请到 新世纪教育网 - ,3. 鲨鱼处于海洋食物链的顶部。Sharks are at,Pay attention to the sentences.1. Were trying to save the earth.2. The river used to be so clean.3. The air is badly polluted.4. No scientific studies have shown that shark fins
5、 are good for health.5. We should help save the sharks.,Present progressive,used to,Passive voice,Present perfect,Grammar Focus,Modal verbs,需要更完整的资源请到 新世纪教育网 - ,Pay attention to the sentences,现在进行时: Present progressive,结构: be (am/is/are) + v.-ing标志词：Look, Listen, now, right nowe.g. Look! The boy is
6、crying.,定义：表示说话时(瞬间)正在进行的动作, 也表示目前或现阶段正在进行的动作。,需要更完整的资源请到 新世纪教育网 - ,现在进行时: Present progressive结构:,What a fine day today! Look! What are they doing?,Exercise,需要更完整的资源请到 新世纪教育网 - ,What a fine day today! Exercis,used to do sth. 表示过去常常做某事, 而现 在往往不做了, 后接动词原 形。be used to doing sth. 表示习惯于做某事e.g. I used to
7、get up at six oclock. Joe is used to drinking a cup of coffee every morning.,used to do与be used to doing,需要更完整的资源请到 新世纪教育网 - ,used to do sth. 表示过去常常做某事, 而现,Translation.1. 她过去常常周末和朋友闲逛。 She used to hang out with friends on weekends.2. 他习惯晚睡。 He is used to staying up.,Exercise,需要更完整的资源请到 新世纪教育网 - ,Tra
8、nslation.Exercise需要更完整的资源请到,被动语态：Passive voice,定义：表示主语是动作的承受者，即行 为动作的对象的一种语态。结构：be + 过去分词e.g. A new school was built last year. Our classroom is cleaned every day.,需要更完整的资源请到 新世纪教育网 - ,被动语态：Passive voice定义：表示主语是动作的承,Translate the sentences by using Passive voice.1. 刚才一些老年人参观了博物馆。2. 工人们使用不同种类的机器工作。,T
9、he museum was visited by some old people just now.,Different kinds of machines are used to work by the workers.,Exercise,需要更完整的资源请到 新世纪教育网 - ,Translate the sentences by usi,结构: has/have + 过去分词标志词：already, yet, ever, never, since, fore.g. I havent finished my homework yet.,定义：表示动作已经完成, 但对现在造成影 响; 或者表
10、示从过去某一时间开始一 直延续到现在并还可能持续下去的 动作。,现在完成时: Present perfect,需要更完整的资源请到 新世纪教育网 - ,结构: has/have + 过去分词定义：表示动作已经完,Complete the following sentences. I _ (be) in Beijing for two years.2. I _ never _ (hear) of that man before.3. Tom _ (work) there since two years ago.,have been,have,heard,has worked,Exercise,需
11、要更完整的资源请到 新世纪教育网 - ,Complete the following sentenc,4. The twins _ (wash) the clothes for an hour.5. He _ (play) basketball since three years ago.6. How long _ Sally _ (sing) yet?,have washed,has played,has,sung,需要更完整的资源请到 新世纪教育网 - ,4. The twins _ (wash,1. 情态动词本身有一定的词义, 表示说话人的情绪、态度或语气, 但不能单独作谓语, 只能与其
12、他动词构成谓语。常见的有: can (could), may (might), must, need, shall (should), will (would)等。,情态动词,需要更完整的资源请到 新世纪教育网 - ,1. 情态动词本身有一定的词义, 表示说话人的情绪、态度或语,2. 情态动词无人称和数的变化, 后接动词原形。否定式是在情态动词后面加not。个别情态动词有过去式形式, 可用来表达更加客气、委婉的语气。 e.g. Ken can climb up the tress like a koala. Tracy could ride a bicycle when she was fiv
13、e years old. You mustnt play with fire. It is dangerous.,需要更完整的资源请到 新世纪教育网 - ,2. 情态动词无人称和数的变化, 后接动词原形。否定式是在情,Translation.1. 我们不能在教室里吃东西。2. 首先你必须完成作业。3. 他现在不可能在家。4. 她一定知道这个问题的答案。,Exercise,We cant eat in the classroom.,You must finish your homework first.,He cant be at home now.,She must know the answ
14、er to this question.,需要更完整的资源请到 新世纪教育网 - ,Translation.ExerciseWe cant e,1. When Tim _ why he was late for school, he just kept silent. (2014 河南)A.was asked B. asked C. was asking D. is asked 2. Are you surprised at the ending of the movie? No, because I _ the story. A.read B. will read C. have read
15、D. was reading (2014 浙江宁波),中考链接,A,C,需要更完整的资源请到 新世纪教育网 - ,1. When Tim _ why he w,3. Someone _ at the door. Can you open it? (2014 河北)A.knocks B. knocked C. is knocking D. was knocking 4. Children _ sit in the front seat of a car. Its too dangerous. (2014 重庆)A.need B. neednt C. must D. mustnt,C,D,需要更完
16、整的资源请到 新世纪教育网 - ,3. Someone _ at the do,5. Is that girl Susan？ It _ be her. She left for Beijing yesterday. (2013 福建福州)A.neednt B. cant C. mustnt,B,需要更完整的资源请到 新世纪教育网 - ,5. Is that girl Susan？B需要更完整的,4a,Fill in the blanks with the correct forms of the verbs in brackets.,Joe: _ you ever _ (take) part
17、in an environmental project ?Eric: Yes, I have. I _ (help) with a Clean-Up Day last year. It was _ (consider) the biggest clean-up project this city _ ever _ (have).,Have,taken,helped,considered,had,had,参加,需要更完整的资源请到 新世纪教育网 - ,4aFill in the blanks with the,Joe: How many people _ (take) part?Eric: I
18、_ (think) more than 1,000 people _ (come) to help out.Joe: Thats fantastic! I guess everyone in this city is _ (try) to improve the environment.Eric: Yes, we cant afford to _ (wait) any longer to take action!,took,think,came,trying,wait,v. 承担得起(后果); 买得起,需要更完整的资源请到 新世纪教育网 - ,Joe: How many people _ (t
19、ak,4b,Fill in the blanks with the appropriatemodal verbs from the box.,People _ think that big things_ be done to save the earth. Many forget that saving the earth begins with small things. For example, you _ save,may/might,must/ have to,can/ could/ should,can would could have to should must may/ mi
20、ght,需要更完整的资源请到 新世纪教育网 - ,4bFill in the blanks with the,electricity by turning off the lights when you leave a room. You _ also use reusable bags instead of plastic bags. I think its a great idea that you now _ pay for plastic bags in some stores. And instead of driving to school or work, you _ ride
21、your bike or walk. If its far, you _ take the bus. All these,could/ can/ should,have to,can/should/ could,can/could,reusable adj.可重复使用的,ay for 付费; 付出代价,需要更完整的资源请到 新世纪教育网 - ,electricity by turning off the,small things _ add up and become big things that _ improve the environment. Lets take action now
22、!,can/ could,would/can/ could,采取行动,需要更完整的资源请到 新世纪教育网 - ,small things _ add up,4c,Make a list of things that people can do to help the environment and discuss your list with your partner.,use public transportation (n.交通运输);turn off the lights when you leave a room;use reusable bags instead of plastic
23、 bags;ride your bike or walk to school or work;stop using paper napkins (n. 餐巾纸);recycle books and paper,需要更完整的资源请到 新世纪教育网 - ,4cMake a list of things that p,Discussion,I think that everyone should use public transportation.,I disagree. Its difficult for parents with young children to use public tran
24、sportation,需要更完整的资源请到 新世纪教育网 - ,DiscussionI think that everyon,1. We cant afford to wait any longer to take action! afford v. 承担得起; 提供, 给予 afford to do sth. (常与can, be able to连用) 买得起; 有足够的e.g. We cant afford to pay such a price. 我们付不起这个价钱。 Dancing affords us pleasure. 跳舞给我们带来快乐。,需要更完整的资源请到 新世纪教育网 -
25、,1. We cant afford to wait any,【链接】afford & buyafford侧重“有经济能力买”，而buy则侧重“购买(这一行为)”。表示“我买不起”可以说I cant afford .，但不能说I cant buy .。【运用】根据句意，用afford或buy的适当形式填空。(1) They cant _ to send their children to college.(2) Can you _ a new car?(3) Helen _ some fruit on her way home yesterday.,afford,afford,buy,需要更完
26、整的资源请到 新世纪教育网 - ,【链接】affordaffordbuy需要更完整的资源请到,2. save electricity by turning off the lights when you leave a room. turn off 关掉 e.g. Please turn the television off before you go to bed. 睡觉前请关掉电视。,需要更完整的资源请到 新世纪教育网 - ,2. save electricity by turnin,turn around 转身 turn up 调高(音量)turn down 调低; 拒绝turn into 变成; 进入 turn on 打开, 发动 turn off 关掉, 关闭turn out to be 结果是turn over 移交,拓展: turn相关短语,需要更完整的资源请到 新世纪教育网 - ,turn around 转身 拓展: turn相关短语需要,Finish the exercises in the workbook.,需要更完整的资源请到 新世纪教育网 - ,Finish the exercises in the wo,需要更完整的资源请到 新世纪教育网 - ,需要更完整的资源请到 新世纪教育网 - www.xs,
