1、Module 4 Sandstorms in Asia,Step One 构词助记,Step Two 词义助记,内容索引,Step Three 语境助记,Vocabulary Breakthrough,Step One 构词助记,A组 前缀 land n. adj.内地的；内陆的 cast v. vt.预报；预告 cycle vi. v.再循环；重新利用,inland,forecast,recycle,B组 后缀 frighten v. adj.吓人的；可怕的 pollute v. n.污染 coast n. adj.沿海的,frightening,pollution,coastal,C组 合
2、成 n.n. n.沙尘暴 n.n. n.坚果壳；简单的一句话,sandstorm,nutshell,D组 转化 n.adj. 大量的；大规模的化学的主要的；多数的,mass,chemical,major,Step Two 词义助记,A组 同义词 terrifying adj. adj. rubbish n. n. completely adv. adv.,frightening/scary,garbage,absolutely,B组 形近词 island n.岛屿 adj.内地的；内陆的 progress n.进步 n.进程；过程 mayor n.市长 adj.主要的；多数的,inland,p
3、rocess,major,Step Three 语境助记,1.背诵经典 With peoples cutting down trees，desertification has been threatening us，and sandstorms are becoming more frequent these years，especially in inland China.2.背诵经典 Its absolutely frightening and scary when you are caught in a sandstorm.,3.背诵经典 In the process of develo
4、ping economy we have been polluting the environment，for example，discharging chemicals into the rivers and giving out waste gases，like carbon dioxide，into the air.4.背诵经典 Its true that most of us are concerned about the environmental protection.But its no use complaining about the present urgent situation.,5.背诵经典 In a nutshell，its every citizens duty to work hard to win the campaign of protecting the environment.,本课结束,