山东省威海二中高中英语 Book III Module 4 Sandstorms in Asia2学案 外研版必修3.doc

book iii module 4 sandstorms in asia课中学习目标：to encourage students to think and talk about something about the sandstorms.to make the students know the causes and results of sandstorms, and what to do with the sandstorms.practice the students reading skills by reading.master the main words and expressions.学法指导：自主、合作、探究式i. leading-in: check previewing job.ii. presenting task:design a poster that encourages people to look after the environment.part 1: reading read the passage quickly again and check the exercises on page 33.language points1. do you know the chinese meaning of the following sentence? can you speak out the usage of the bold words ? the wind blew the sand high around the houses, and some cars were almost completely buried by the sand. translate：_ high：_ almost：_ can you figure out the different meanings of every pair of sentences?look! a plane is flying high in the sky. _the teacher spoke highly of my composition._ a car passed by just now and almost knocked me down._we have mostly passed the exam. _2. deserts are also created because people cut down trees and dig up grass. 由于人们砍树除草，也能造成沙漠。cut down 砍到 路边的许多大树都被砍掉用来建房了。 many big trees along the road _ for building houses. 你知道cut 的另外哪些词组呢？ cut up 砍碎. cut off 砍掉,切断 cut away from 从砍下 cut in插话，3.what do you think happens to traffic in this situation? 你认为在这种情况，交通会咋样？will you please translate the following sentences into english?a你猜我在等谁？_b你猜谁在等我? _c你愿意让谁帮你学英语呢？_d你建议谁在这个节目中扮演主角呢？_4. a mass campaign 一次“大规模的”运动 那你知道下列短语的汉意吗？ a mass/masses of paper/books_想想还有哪几个表“大量的”，既可修饰可数又可修饰不可数名词的短语？a lot of/lots of plenty of a quantity/quantities of a good supply of5. citizens wake up to an orange sky and strong winds that cover the city in a thick, brown-yellow dust.(translation)_wake up to _wake up to an orange sky _ wake up to the importance of english _ wake up to find the possibility to learn english well _6.the thick dust makes it difficult to see. (translation) _it 在句子中代替_ 作_ (句子成分)。常见的这类形容词常：easy; difficult; hard; possible; important我们发现学好英语是非常重要的。_7.to prevent it coming nearer, the government is planting more trees.(translation)_prevent: 阻止、防止某事物prevent(from) doing= stopfrom doing= keepfrom doing= hold backfrom doing=banfrom doing 阻止做某事（辨析）part2 grammarteaching aimsget the students to know about the functions of infinitive. get the students to grasp the usage of all kinds of infinitive forms.get the students to the usage of the infinitive after “but”.teaching methodsshowingsummary-consolidation i. 请同学们判断下列句中的动词不定式做什么成分，并总结其作用：to help poor people is our duty. its our duty to obey the law. she promised to give him a chance. mother makes it a rule to go out for a work after supper. the child has many toys to play with.she encouraged me to have a second try. i came here to learn from you. i glad to hear the news. 10. he is too young to join the army. 动词不定式在句中可以作_ _ _ _ _ _ii. 动词不定式的形式 请观察下列句中不同形式的动词不定式，并总结出各种形式的用法：the wind is strong enough to move sand dunes.there is nothing to be done.to be cycling in a sandstorm is frightening.sandstorms in china appear to have increased in recent years as a result of “desertification”.to have been caught in a sandstorm was a terrible experience.we were advised not to go outside.its very important for us to control the time spent in playing computer games.its kind of you to give so much money to the charity.my question is when to start.summary时态 语态 主动被动 一般式 进行式完成式另：否定式 _ 复合结构 _ _ +to do (在句中作主语、宾语、表语)动词不定式的一般式，表示动作与谓语动作_ 发生，或在谓语动作之_ 发生。动词不定式的进行式，表示动作与谓语动作_ 发生，并强调_。动词不定式的完成式，表示动作发生在谓语动作之_。practice:it is frightening _ (walk) in the road in a sand storm.experts hope _ (learn) more about the movement of sandstorm.id like _ (tell) about the situation before now.the work needs _ (complete) by the end of the week.my father was out of the city when the sandstorm came. he was very glad _ (miss) it.the building has _ (finish) by the end of the year.we were told _ (not leave) the house.most houses seem _ (destroy) by the storm.its polite _ (向老师问好).the meeting _ (hold) tomorrow is of great importance.iii. but后动词不定式的省略(i) 在cannot ( choose /help ) but do sth. 中不定式不带to,表示“只能做某事，不得不做某事”。i cant but admire her courage. 译 _我不得不接受他的邀请。译 _(ii) 观察以下句子 she could do nothing but cry. he had no choice but to accept the fact.summary but前若有实义动词do后则_(有/无) to, 反之，则_ (有/无) to。 工人们什么都不做，只是喝茶聊天。 译 _part3 everyday english & cultural corneri.some key phrases1.take away 拿走，带走 you can take away anything you like . 2.spread all over europe 传遍欧洲 spread, spread, spread3.think seriously about 认真考虑4.look through 浏览，从头到尾看5.join an organization 加入到一个组织中去 join sb.in sth. 参加某人的活动 take part in sth. 参加活动6.collect information/money 收集信息、募捐ii. read the material