英语必修三外研版 Module4 Sandstorms in Asia导学案

1、导学案Book Three Module 4 Sandstorms in AsiaSection 1 Introduction & speaking （第1课时）一、学习目标1、通过自主阅读课文，能够认识并掌握课文中的新词汇。2、通过课堂合作探究，能够用英语谈论沙尘暴的起因和预防沙尘暴的措施 二、学习重难点学习重点： 能够认识并掌握课文中的新词汇。学习难点：能够用英语谈论沙尘暴的起因和预防沙尘暴的措施 三、学法指导1. 课前30分钟自主学习，完成预习学案。找出自己的疑惑和需要讨论的问题，用红笔做好标记。2. 课上25分钟高效讨论展示答案 3. 课上10-15分钟答疑解惑。 4. 课后2

2、0分钟巩固学习四、学习内容：Introduction & speaking 五、学习过程课前预习【自主学习】同学们，在本部分中，你要掌握这些单词和短语，请自主阅读教材P31，然后把它们找出来。（部分单词出现在后面的学习中，需要提前掌握）（一）Words：英汉互译（方法引导： 默写单词， 然后核对答案， 用红色笔写出正确答案并在再加以巩固）1、沙尘暴_2、吓人的_3、内陆的_4、last（v）_5、dig_6、protect_7、sign_8、ocean_9、prevent_10、region_11、expert_12、describe_13、bury_14、blow_15、host/h

3、ostess_（二）Phrases：翻译成汉语(方法导引：按音标正确读，背单词和短语)1.cut down_ 2. dig up_3.blow across_ 4.inland region_【合作探究】Step 1 Turn to P31 and finish activity 1 . blow bury frightening last (v) sandstorm There has been a _. It_ _ for ten hours and was very _. The wind _ the sand high around the houses, and some cars

4、were almost completely _ by the sand. Step 2 Discuss these statements and decide which statement is false.( )1. Sandstorms begin in desert areas.( )2. Deserts are created by climate changes.( )3. Deserts are also created because people cut down trees and dig up grass.( )4. Sandstorms from Asia have

5、blown across the Pacific Ocean to America.( )5. Sandstorms cant be prevented.( )6. The inland region has more sandstorms than the one near the sea. Step 3 Work in groups and discuss what caused sandstorms. The following pictures may help you.There is high temperature and little _._ People _ too many

6、 trees and _grass . There are more population and less _._ .The land becomes_._ Think: Are there any causes?Step 4 Look at these pictures. Now work in pairs and discuss what we should do to prevent sandstorms coming.The following pictures can help you.种植更多的树 减少空气污染_ _ 保护水资源 修建绿色防护林（green fences）_ _

7、_全世界人民联合起来（join hands）控制沙尘暴。 _.Step 5 Role-playStudent A: A host/hostess(主持人/女主持人) from CCTV-channel 9Student B : An expert in environmental protectionThe whole class: audience Task: The host/hostess is interviewing the expert and asking him/her about the reasons for sandstorms and asking for his/he

8、r advice on preventing sandstorms from coming.You can do it like this:Student A: Good afternoon, Professor Wang. Welcome to our programme. Student B: Good afternoon, host/ hostess.Student A: Recently, sandstorms happen frequently. Could you please tell us the reasons for them?Student B: Yes. Well, t

9、here are mainly 4 reasons for sandstorms. Firstly,；Secondly, ; Thirdly, etc.Student A: Well, as we all know, sandstorms are harmful for us. So would you mind telling us how to prevent them from coming?Student B: OK. We can do the following things to reduce sandstorms. Firstly,；Secondly, ; Thirdly, e

10、tc.Step 6 Homework同学们，在本部分中，你要掌握这些词汇和句型，请你在课文中找出后把对应的知识点写在其旁边，最后完成相应的检测题。1、frightening adj （事物）吓人的，可怕的（P31）frightened adj （人等）感到恐惧的frighten vt 使惊恐be frightened of / at害怕be frightened to do 害怕做frighten sb. into/out of doing sth. 吓唬某人做 /不敢做某事frighten sb. away 吓走某人frighten sb. to death 把某人吓得半死【反馈检测】 It

11、 is _ when a tiger is angry .老虎发怒的时候令人害怕。 It was supposed to be a horror film but it wasnt very _ .这应该是一部恐怖片，但并不太吓人。 She was _ at the thought of the examination .一想到考试她就害怕。（4） On seeing the mans _ face ,all are _ to run away ,for hes got a quite ugly face .A. frightening ; frightened B. frightened ;

12、 frightenedC. frightening ; frightening D. frightened ; frightening2、protect vt. 保护（P31）protection n. 保护protectfrom/against 保护免受【反馈检测】 He put on the sunglasses to _ his eyes _ the strong sunlight.他戴上眼镜以保护眼睛免受日光的曝射。It is their duty to _ their friends _ the enemy. 保护朋友不受敌人的伤害是他们的责任。 We took our umbrel

13、las with us when we went out in order to_ us from a heavy rain.Aban Bpreserve（保护；维护） Cprevent Dprotect3、cut down 砍倒；降低；驳倒；杀死，减少；缩小(尺寸、数量或数目)；削减(数量、开支)；改小或缩短(衣服)（P31）cut upcut. into pieces 切碎；使伤心cut sth. in half / in two 将对半切开cut in (on sth.) 插嘴，插入cut off 切断；切掉；隔绝cut out 剪除，切掉，割掉；删除cut open 切开或破开某物【反

14、馈检测】 He kept _ on our conversation.我们谈话时他总是插嘴。 We were _ in the middle of our telephone conversation.我们在电话里谈话谈了一半就被切断了。 First cut the meat _.先把肉切成小块。 The doctor told me to _ on smoking.医生要我少抽烟。 He was asking $500 for the car，but we _ to $300.这辆汽车他要价500美元，但是我们把价格讲到300美元。(6) He brought a knife and_the

15、 box_(割开)(7) He was in hospital for six months. He felt as if he was _ from the outside world.A. cut out B. cut up C. cut off D. cut through (8) I was just talking to Margaret when Jackson _.Acut in Bcut down Ccut out Dcut up(9) If you dont _ your smoking，I will _ your supply.Acut up；cut down Bcut down；cut offCcut in；cut off Dcut in；cut up(10) The new coat