Module4SandstormsinAsia复习学案外研版必修3.doc

Module Four Sandstorms in Asia 单元目标： 词汇 Sandstorm, frightening, inland, mass, campaign, dune, desertification, process, citizen, Dues, forecast, strength, cycle, mask, atmosphere, carbon, dioxide, chemical, environment, garbage, melt, pollution, recycle, coastal, concerned, evidence, major, urgent, pollute, complain, nutshell, scary, absolutely, protection. 词组 Dig up, describe… as…, cut down, be caught in, as a result of, wake up to, one after another, Small bits of, in a week’s time, take in, give out, have a bad effect on，look through. 重点句子 Deserts also created because people cut down trees and dig up grass. To have been caught in a sandstorm was a terrible experience. I couldn’t agree with you more. It’s absolutely hopeless. You are absolutely right. There are laws that do not allow people to burn too much coal. 语法 Different types of infinitive: Do, to do, to be doing, to have done, to have been done. For example: The wind is strong enough to move sand dunes. We were advised not to go outside. It’s frightening to be cycling to work in a sandstorm. To have been caught in a sandstorm was a terrible experience. Expressions with but +infinitive: I can’t help but agree. We do nothing but talk about it. 功能句式 Practice expressing strong opinions: I totally agree with you. I couldn’t agree with you more. I think you are absolutely right. It’s extremely serious. Absolutely! Practice talking about how to improve the environment: We need to …. We must… We should…. 能力目标： Talk about sandstorms in Asia. Practice expressing strong opinions. Practice talking about how to improve the environment. Learn to use different types of infinitive and expressions with but +infinitive Learn to design a poster that encourage people to look after the environment. 情感目标： 了解世界环保情况，培养环保意识。 reading and vocabulary Step 1 Pre-reading a. Look at the photo and answer the following questions. 1. Get Ss to come up with as many words as possible while lo