重大版高中英语4册 Unit 4 教案

1、Unit 4 Three GorgesTeaching Aims:1. Know the use of the new words.2. Improve the Ss reading ability Teaching Important Points: 1. Improve the Ss reading ability.2. The new words.3. Language pointsTeaching Difficult Points:Improve the Ss reading ability.Master the new words.Language points.Teach

2、ing Aids:a tape recordera projectorthe blackboardTeaching procedures: Period 1 getting readyStep 1: greeting Step2: free talkThree gorgesDo you like traveling? Have you ever been to the Three Gorges? Can you give a description of your experience? Do you know the names of the three gorges?Three gorge

3、s: 瞿塘峡 巫峡 西陵峡Step 3: brief introduction of Three gorgesLook at the picture.三峡水电站，又称三峡工程、三峡大坝。它是世界上规模最大的水电站，也是中国有史以来建设最大型的工程项目。三峡水电站1992年获得中国全国人民代表大会批准建设，1994年正式动工兴建，2003年开始蓄水发电，于2009年全部完工。移民是三峡工程最大的难点，在工程总投资中，用于移民安置的经费便占到了45%。由于重庆市在移民问题上的积极性和主导性，1997年6月14日，中央政府决定将重庆升格为直辖市.Step 4: task 1Look at the m

4、ap and complete the following tasks.1) Find the area which is to be flooded in the map and circle it.2) Mark out the site of the Three Gorges Dam.Step 5: task 2With the closure of the Three Gorge Dam across the Changjiang River, what did the people there have to do? They had to leave their native pl

5、ace (where) and resettle in some higher places or even other provinces (where).Step 5: task 3Read the following words from the article. Consult your dictionary if they are new to you.Migrate Migrants Migration Evacuatemigrate 'maigreit vi. 1. 迁移;移居2. (候鸟等)定期移栖;(鱼群)回游When did Asians begin to migr

6、ate to the United States? 亚洲人何时开始向美国移民的? Large numbers of birds migrate south every winter. 每年冬季大量的鸟类迁徙南方。migration maigrein n. 1.迁移; (候鸟等的)迁徙UC2. 移民群;移栖动物群Cmigrant 'maigrntadj. 移居(尤指移出国境)的;流浪的n. 1. 移民;移居者2. 候鸟3. 随季节迁移的民工(或动物)evacuate ivækjueit vt. 1. 撤空,撤离;从.撤退2. 使避难,使疏散(+from)The village

7、was evacuated because of flood. 由于洪水这个村子已经撤空。 The civilians were evacuated from the city to farms. 百姓被从城里疏散到了农庄。 Step 6: summary and homework1. After meticulous feasibility studies by experts, it was finally concluded that the merits of the project far overweigh its demerits. On April 3, 1992, the N

8、ational Peoples Congress approved the construction of the project. The Three Gorges Project has its main benefits in flood control, power generation and navigation. The project can raise flood control capacity from the present 10-year frequency to 100-year frequency. The project also presents daunti

9、ng problems which should be properly handled and solved to avoid any possible undesired impacts. These include resettlement of population, environmental protection, fund raising, etc.About 1 million people will be relocated owing to the construction of the project. The government has attached great

10、importance to the issue and decided to appropriate large sums of money for the resettlement program. The guiding principle of the program is that the life of the relocates can only be improved. For this purpose, the government has adopted development-oriented resettlement, in other words, to combine

11、 resettlement with local economic development. Therefore, they feel quite at home and enjoy a better living in their new homes.3. Let students preview the reading part Period 2 Reading and ComprehendingStep 1: greetingStep2: fast reading1. Read through the passage quickly and find the answer to the

12、following question.Q: Where did Li Chaohua, his family and 610 other people leave and resettle?A: They left their native place, Zhongxian County in Chongqing, and resettled in Guangrao County, Shandong Province.Step 3: careful readingQ: When will the Three Gorges Project have been completed how many

13、 people will need to have been moved?A: It will be completed by 2009, and 125,000 people will need to have been evacuated.Step 4: task 1 Scan Para. 3 -5 of the passage and decide which group the following words and expressions belong to.Migrants Host Villagersset apart land and built houses Hmoved t

14、o another province Mprepared the rice and hot pepper Mwere invited to have jiaozi Mtears rolling down M left for Guangrao County Mwaved their hands M made arrangement Hsettled down M lit firecrackers Hevacuated M beat drums Hgathered at the bank MStep 5: task 2 Retell the story about how the migrant

15、s left their hometown and were welcomed by the host villagers with the help of the information in Task 1At the end of 2000, over 600 evacuees left their native place and resettled in Guangrao County, Shandong Province. As far back as 1991 and 1992, the Chinese governments at various levels knew that

16、 by 2009, when the Three Gorges Project is completed, a total of 1,084 km2 will be flooded and 1,250,000 people will need to have been evacuated. The evacuation was to be carried out in two stages. The first stage guaranteed the closure of the dam across the Yangtze River. The second stage of evacua

17、tion was started in 1998 and in August 2000, people in the would-be flooded area began to migrate to other places. On the morning when the first migration group were leaving, people gathered at the bank to see them off. The migrants on board waved their hands to those their friends, tears rolling do

18、wn their cheeks. Even before the migrants arrived, the people of Guangrao County put the settlement of the migrants above all else. They set apart land, built houses and prepared food for them. On the migrants arrival, the villagers beat drums and lit firecrackers as if they were celebrating a festi

19、val. Although it will take time for the migrants to get used to the life in Guangrao County, the migration has given them an opportunity to improve their production conditions and life style.Step 6: HomeworkHow do you understand the last sentence of the article? In the new land they can plant some n

20、ew crops and have a better harvest because the former farmland had been cultivated for a long time. Furthermore, the communication with the local people in Guangrao County could provide these evacuees with another chance to enjoy a new way of living.Period 3 & 4 Language FocusStep 1: Greeting St

21、ep 2: language points in the text1. at the end （of） 在最后, 在尽头。根据需要可接（of）, 后可接时间名词也可接地点名词。如：在街道的末尾有一家医院。There is a hospital at the end of the street.上个月末， 一直都在下雨。It was raining at the end of last month. by the end of 意为“到为此”，常常用于完成时。 如：到下周末我们将会完成这幢大楼。By the end of next week we will have finished the b

22、uilding.我们的新图书馆是在上个月末完工的。By the end of last month our new library had been built.扩展：come to an end 结束put an end to 结束，制止make ends meet 量入为出odds and ends 杂七杂八的东西2. (1) evacueethe person who is evacuated(被疏散的人) 后缀-ee表示“被的人”。 employee: the person who is employed (被雇佣的人) trainee: the person who is train

23、ed (被训练的人；新兵) trustee: the person who is trusted (被信赖的人；可信的人)interviewee: the person who is interviewed(被采访的人)(2) moving to another province from是现在分词短语，作定语，与其修饰的名词之间存在主动关系（主谓关系）。可转换成定语从句。= who will move go another province from如：与会的人员都是专家和学者。The people coming to the conference are all experts and s

24、cholars.扩展 v-ing, v-ed, to do 都能作定语，但意义有所不同：1) v-ing可作前置定语也可作后置定语，与其修饰的名词之间存在主动关系 (主谓关系) 或表达进行意义。The houses being built are for the teachers.I have never seen a more moving movie. 2) v-ed常作后置定语，强调与其修饰的名词之间存在的被动关系（动宾关系）或表达完成意义。 Things lost never come again.3) to do常作后置定语，不定式作定语与被修饰的中心词之间常表现为主谓关系或者动宾关

25、系。侧重表达不定式的动作稍后发生。 The Browns have a comfortable house to live in. The car to be bought is for his sister.3. As far back as 1991 and 1992, the Chinese Changjiang River Water Conservation Committee and governments at various levels in the area of the Three Gorges Project knew that by 2009, when the pr

26、oject is completed, a total of 1,084 square kilometers of land will be flooded and 125,00 people in 268 of towns and townships in 20 districts and counties will need to have been evacuated. 远在1991年到1992年这段期间，中国长江水资源保护委员会和三峡库区的各级政府就已经充分意识到， 在2009年三峡工程完全竣工前，将有总面积约1，084平方公里的土地会被淹没，20个区县的268个镇和镇一级的125，0

27、00人需要重新安置。(1) 句子成分主语：委员会和政府 谓语：knew 宾从：that.evacuated 非限制性定从：whencompleted(2) as far back as 1991and 1992相当于as early as 1991 and 1992(3) at various level表示“各级的；各个水平的；各种水平的”4. The evacuation was to be carried out in two stages. 整个移民安置计划分两个阶段进行。(1) to do sth 是将来时的一种表达法, 表示“表示打算或即将做某事”。 The plane is to

28、 take off, hurry up, please. 请快点， 飞机即将起飞了。将来时的其他表达法： be going to will/shall do (shall只用于第一人称） be about to do.when.正打算做某事.这时I was about to jump into the river when a man shouted to me. 我正要跳河这时有个男的对我高呼。(2) carry out 实现；完成；实行。强调结果，表示“实现”。carry on继续；连续。 强调过程，表示“执行”。Our plan must be carried on until it i

29、s carried out.我们的计划必须执行下去直到将它实现。5. It guaranteed the closure of the dam across the Changjiang River. 这有力地确保了长江流域的成功。(1) guarantee n. 1)保证; 担保;保证书2) 担保品：抵押品3) 担保人Hard working is the guarantee of success. 辛勤工作是成功的保证He offered his house as a guarantee. 他以房屋为担保Dont worry, I may stand guarantee for her.

30、别担心，我可以做她的担保人(2) vt. 对提出担保I want my safety guaranteed. 我希望安全得到保证We must guarantee to carry out the tasks. 我们必须保证完成任务6. people gathered at the bank to see them off.父老乡亲们齐聚岸边为他们送行。(1) gather vt. vi.1)使集合；聚集The teacher gathered the pupils round her to tell them a fable.老师把学生们聚集在她周围给他们讲个寓言故事。2) 收集；搜集；采集

31、；收拾；收获Gather your toys up. 把你的玩具收拾起来。3) 推断；得出结论；了解What did you gather from his statement? 辨析 gather 和collect 都含有“收集”，“聚集”的意思，常可通用。gather 系常用词，指“收集”、“聚集”、“集合在一起的，也可指把分散的东西或抽象 的东西（如信息，力量）聚集起来。collect指“有计划、有选择地收集；收藏”。当我们要有计划，有条理，为某种目的而进行细致的、有选择的收集时（2）see sb. off 为某人送行7. As the passenger liner was pulli

32、ng out, the migrants on board waved their hands to those who had not yet been evacuated, tears rolling down their cheeks. 随着客轮缓缓驶出港口，船上的移民使劲地向尚未迁移的乡亲们挥手告别，热泪早已夺眶而出。 (1) pull out (军队)撤离；(火车，船)开出(2)tears rolling down their cheeks是 “独立主格”作伴随状语, 其结构为:n.+v-ingI cant go to sleep, children singing loudly o

33、utside.由于孩子们在外面高声歌唱, 我无法入睡。(原因状语)注意 “独立主格”前往往加with如:由于老师的指导, 我们的实验很快就成功了。With the teacher instructing in the experiment, we succeeded very soon. with+ n. /pron. +介词短语The teacher came into the classroom with a book in his hand.= The teacher came into the classroom, book in hand. with +n. /pron. +副词Wi

34、th Mr Smith away, weve got more room. with+ n./pron. +不定式With so many dishes to wash, he couldnt go out for play. with + n./pron. +过去分词The man was brought in, with his hands tied behind his back. with +n./pron. +形容词In winter I like sleeping with all windows open.8. put above all else/ putabove anyth

35、ing else意 “把.置于重要地位, 把.当成头等大事来抓”。put about 散步，(消息)宣称put across 解释，表达put aside 节省出（钱，时间）等，储存以备用put away 放好，收好，储存以备用put down写下;记下;控制;击败;平定;取缔put forward提出(意见,建议);推荐;提名;推举put in打断;插嘴;进港;进入并作短暂停留put off延期;推迟put on表演;演出;上演(戏剧);穿上;戴上put out熄灭;关熄,扑灭put through接通电话put up举起;抬起;张开(伞);张贴;公布put up with忍受;忍耐;受苦a

36、s sb put it正如某人所说/所表达9. (1) set apart 留出;拨出set about doing 着手/开始做某事set down 放下，记下set off (for) 动身，出发（去）set out to do sth. 开始/着手/准备做某事set up竖起/支起;建立(2) make arrangement = arrange 为做安排make arrangement for 为做好安排make arrangement for sb. to do sth. 为某人安排好做某事10. as if = as though “好像”引导虚拟语气(1)与现在事实相反: V过去

37、式 （were/was）He looked after me so well as if I were his wife.(2)与过去事实相反：过去完成时 had + doneHe looked as if he had seen a ghost.他看起来好像见到鬼似的。(3) as if / though 从句中的省略：当as if 和 as though 从句的主语与主句主语一致时，该主语和后面的动词可以省略。He lay still for a long while, as if (he is) dead. 他长时间地静静地躺着，好像要死人一样。He acted as if (he wa

38、s) a fool. 他的行为像傻子一样。11. opportunity n. 机会；时机offer sb. an opportunity 给某人一个机会 get an/the opportunity 得到一次机会make an / the opportunity 创造机会 miss an / the opportunity 失去机会seize an / the opportunity 抓住机会 take an / the opportunity 利用机会a golden opportunity 绝好的机会 let an opportunity slip 坐失良机have an / the o

39、pportunity to do sth.有做某事的机会Step 3: task 1 Practice reading the following figures with your partner.9,372,614 km2: nine million three hundred and seventy-two thousand six hundred and fourteen square kilometers.US$ 78,000: seventy-eight thousand US dollars1,084 square kilometers: one thousand and eig

40、hty four square kilometers1,250,000 people: one million two hundred and fifty thousand people3/4 of the class: three fourths of the classThe year of 2009: the year of two thousand and nine83.4% of the earth: eighty-three point four percent of the earth150 families: one hundred and fifty familiesRoom

41、 6103: Room six one o three960 billion m3: nine hundred and sixty billion cubic metersStep 4: task 2 1. Find the words and expressions in the article to match the following definitions.Step 5: task 3 2. Complete the foolowing sentences with the proper forms of the words and expressions you get in Pr

42、actice 1.3. Fill in the blanks with the proper forms of the words given, paying attention to the differences in meanings among them.Step 6: summary and homeworkPeriod 5: GrammarStep 1: GreetingStep 2: analyze part of speech of infinite(showing pictures) Look at the following pictures, paying attenti

43、on to the different part of speech of “to fly” in each sentence.A: What was your dream in childhood?B: To fly was my dream. Subject 主语A: What do you want to do?B: I want to fly in the sky. Object 宾语A: What is your plan this weekend?B: My plan is to fly across the Atlantic Ocean. Predicative 表语A: Why

44、 are you wearing a pair of wings?B: I wear wings to fly like a bird. Adverbial 状语A: What is our mission today?B: We have a lot of food and medicine to fly to the area. Attributive 定语Step 3：task 1 Tell the usages of the infinitives in the following sentences.1) Dr. Bush wants to have a sound sleep. 宾

45、语2) To climb the high mountain seems an impossible task to my grandparents. 主语3) It is possible to finish the work in a weeks time. 主语4) What do you think is the right thing to do? 定语5) My wish is to become a physicist. 表语6) Tom found it easy to master a foreign language. 宾语7) He often goes to the c

46、yber cafe to chat with his no-line friends. 目的状语Step 4：summary of infinitive一不定式作主语，通常用 it 做形式主语1. It be + for sb + to do sth It is difficult for you to study math.2. I be + of sb + to do sthIt is kind of you to help me.二不定式作表语主语是以aim, duty, hope, idea, intention, mistake, plan, proposal, job, sugge

47、stion 等为中心词的名词词组，或以 what 引导的名词性从句表示，后面的不定式说明其内容，如： My idea is to climb the mountain from the north. Your mistake was not to write that letter. My suggestion is to start work at once. What I would suggest is to start work at once. 前有do,后省to All I could do was send him a telephone./ The child did noth

48、ing except cry.I have no choice but to sleep.三V + to do/ V + 疑问词 + to do这类动词常见的有：afford, agree, arrange, ask, choose, decide, demand, desire, expect, hope, learn, manage, offer, pretend, promise, refuse, want, wish, like, hate, prefer, continue, try, start, forget, mean, intend, begin, 等，例如：Ive arra

49、nged to meet him at ten oclock.I didnt think / expect to find you here. I dont know what to do / where to go / who(m) to ask / when to stop / how to get there.I havent decided whether to sell it or not.We must find out what to do next / where to put it.四.不定式结构作定语不定式作定语通常只能放在被修饰的名词之后，如： Its time to g

50、o to bed. I want to get something to read during the vocation. Have you anything to declare?She has a lot of things to attend to.The nurse has five children to look after.Lets first find a room to put the things in五、不定式结构作状语不定式结构可以作状语，修饰动词、形容词、副词等，表示目的、原因、结果、条件等。He went home to see his mother. 原因Wha

51、t have I said to make you so angry? 结果结果句型 so as to Would you be so kind as to lend me your bicycle / tell me the time? such () as to Im not such a fool as to believe that. enough to The boy is old enough to go to school. too to His eyesight is too poor to read such small letters

52、.六不定式作宾语补足语 下列动词用不定式作宾语补足语时，必须省去不定式符号to：let, make, have, see, watch, notice, look at, observe, hear, listen toTeacher let us read every morningWe noticed him entered the room.被动 to 还原We are made to read every morning.He was noticed to enter the room.Step 5: task 2Translate the following sentences in

53、to English by using infinitive.Step 6: more exercise and homeworkPeriod 6&7 Further ReadingStep 1: GreetingStep 2: Fast- reading Read through the passage The Three Gorges on page 55 and find out the answer to the following question.1. What are the three gorges? Qutang Gorge Wu Gorge Xiling Gorge

54、2. What is special to the three gorges?Qutang Gorge is known for its magnificence with many scenic spots. Wu Gorge is famous for its deep valley and quite beauty. Xiling Gorge is also composed of many scenic spots and cultural relics.Step 3: ScanningScan the passage and find the exact figures for the following.1) The total length of the