高中英语 Module4 Period 2 Reading and Vocabulary教案 必修3 新课标.doc

period 2 reading and vocabulary课题period 2 reading and vocabulary课型new教学目标1. to get ss to learn how to guess new words in the context;2. to get ss to learn more words and phrases about sandstorms;3. to let ss grasp some reading skills and reading strategy;4. to help ss learn how to talk about sandstorms further.重点how to do some explanation about the text.难点try to improve students reading abilty and understand the passage better.学情分析the ss can finish the task.教具课件1. a recorder 2. a projector 3. a computer教法1. fast reading and careful reading to help the students understand the passage exactly.2. individual, pair or group work to make every student work in class.教学程序教学内容师生活动时间分配step 1step 2step 3step 4step5step 1. pre-reading ask ss to answer the following questions to lead to the topic of this period.(1) whats your definition of sandstorm? (2) can we prevent sandstorms? how?(3) suppose you are an expert, what will you advise people to do in this situation?step 2. while-reading.1. fast readingask ss to read the passage quickly and decide how to divide the whole passage. then give the main idea of every paragraph.suggested answers: (1) the structure of the passage:part 1: para 1part 2: paras2-4part 3: paras5-6(2) the main idea of every paragraphpara 1: major disaster in asiasandstorms.para 2: the description of sandstorms.para 3: the causes of sandstorms.para 4: the influence of sandstorms.para 5: the forecast and suggestions of sandstorms.para 6: the measures taken by the government.2. intensive reading(1) ask ss to read the passage carefully in pairs and check the meanings of the new words or difficulty words with each other. if they have difficulty, they may refer to the dictionary. (2) check whether ss understand some words or phrases in the passage. ask them to find words to match the definitions. to ride a bicycle _ someone who knows a lot about a particular subject _ things that happen one after another, and have a result _ someone who first lives in a particular town or country _ very small bits of dirt or earth, on the ground or in the air _ to continue to live after a difficult or dangerous situation or event _ to say what will probably happen _ everything that is happening at a particular time _ sand hills _ to cause a change _ something that is worn over ones face _ the noun form of strong _suggested answers: cycle expert process citizen dust survive forecast situations sand dunes affect mask strength可以自己多出一些题目，也可以就书上的练习把怎样引导学生的过程给出。step 3. language points1. ask ss to work in pairs and find sentences in the passage to replace the following sentences.(1) ren jianbo is from inner mongolia. he described a terrible sandstorm that he experienced in the desert when he was a child.(2) when citizens wake up, they find that the sky has an orange color and there are strong winds with thick, brown-yellow dust.suggested answers:(1) ren jianbo, form inner mongolia described a terrible sandstorm he experienced as a child in the desert. (paragraph 2, page 32)(2) citizens wake up to an orange sky and strong winds that cover the city in a thick, brown-yellow dust. (paragraph 4, page 32)2. ask ss to discuss the important and difficult language points. (1) they are so thick that you cannot see the sun, and the wind is sometimes strong enough to move sand dunes.沙尘暴能见度经常很低以至于看不见太阳，风有时得能移动沙丘。so that与 such that句型归纳 such + a/an + adj +单数可数名词 +that-clause such + adj + 复数可数名词 + that-clause such + adj +不可数名词 + that-clause so + adj/ adv + that-clause so + adj + a/an +单数可数名词+ that-clause so + many / few +复数可数名词 +that-clause so + much / little (少)+不可数名词 + that-clause(2) to have been caught in a sandstorm was a terrible experience. 陷在风尘暴中是一次可怕的经历。be caught in the heavy rain/snowstorm/traffic突然遭到 (雨,暴风雪，堵车等)。如：he was caught in the heavy snow on his way home last night.【拓展】catch常用词组：catch sb doing sth 撞见/发现某人正在做catch up with 赶上(3) there was nothing to be done.什么也干不了。 这是一个动词不定式作定语的there be 句型,动词不定式用主动和被动都可以,但也略有区别.当说话人考虑的是必须有人去完成某事时，用主动；如强调的是事情本身必须完成，则用被动。 如：there was nothing to be done （某东西坏了，无法使之恢复）there was nothing to do. (无事可做，十分乏味)there is a lot of work to do. (somebody has to do the work.)there is a lot of work to be done. (the work has to be done.)(4) sandstorms in china appear to have increased in recent years as a result of “desertification”. 因“荒漠化”越发严重，中国近年来发生沙尘暴的次数明显增加了。 as a result of 因为的结果。如： he got ill as a result of the bad weather. 【拓展】相关词组： as a result 因此。如： as a result, he got a great success in his experiment. result from 因于，因而起。如： his success resulted from his hard work. result in 致使， 导致，造成的结果。如： his hard work resulted in his success.(5) this is a process that happens when land becomes desert because of climate changes and because people cut down trees and dig up grass. cut down砍倒, 削减 (数量,开支)。如：enough has been done to stop people cutting down many trees. dig up / dig out 掘出；挖出；发掘。如： (a) he has dug up some vegetables. (b) we have to dig out the car from the snow. (6) the storms sometimes continue all day and traffic moves very slowly because the thick dust makes it difficult to see. 暴风有时持续一整天，车辆开得很慢，因为浓浓的尘埃降低了能见度。make it + adj (n) + (for sb) to doto do为真正宾语，it是形式宾语。如： the holes in the window made it very hard to keep the room warm. this has made it necessary for us to learn english well.(7) but the strength of the storm sometimes surprises people. surprise vt 使惊奇，使震惊。如： that he cheated in the exam surprised me. the news surprised me. 类似的动词还有：excite, disappoint, frighten, interest, etc. (8) to be cycling in a sandstorm is frightening. 在沙尘暴中骑车真可怕。to be cycling 为动词不定式，在句子中做主语。如：to refuse him is no easy this time.(9) to prevent it coming nearer, the government is planting trees.为阻止沙漠的逼近，政府已经开始植树。 to prevent it coming nearer, 动词不定式作目的状语。 prevent (from) doing防止或阻止干如：his advice prevented me from making a serious mistake.类似的短语还有：stop (from) doing, keep from doingthe heavy rain stopped /keept me from going shopping.3. ask ss to listen to the passage and complete the sentences.(1) the winds in a sandstorm can sometimes_.(2) when ren jianbo was living in inner mongolia_.(3) sandstorms in china appear to have increased_.(4) cutting down trees and digging up grass can_.(5) traffic moved very slowly because_.(6) the government is planting trees to the west of beijing to_.suggested answers:(1) prevent you from seeing the sun(2) he experienced a terrible sands(3) because of desertification(4) cause deserts and sandstorms to increase(5) the drivers cannot see(6) prevent the desert coming nearer.step 4. post-readingask ss to work in pairs and discuss these questions.q1. what do you know about sandstorms in beijing?q2. what caused s