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1、教 案Module 7 Unit 20 Lesson 3 Epidemics ExplainedEpidemics throughout history 第二课时 教学目标（Objectives）1. 分析长难句，理解课文。2. 掌握重点词汇，短语和句型。情感态度了解传染病对人类的危害，进一步认识良好生活习惯的重要性。重点和难点：1.识别课文结构，用自己的话归纳信息。2.分析课文中的长难句，提高阅读能力教学方法Task-based Approach 教具Dictionary, Multimedia and Blackboard教学过程Step1 Greetings and the daily
2、routineGreet the whole class .Let them read the encouraging sentence on the blackboard together twice.Regret is just a waste of time.It neither changes the past nor creats the future.So work hard now.Step2 Check the new words in this passageDicate new wors of this passage.(We have leant and recite t
3、he new wors early in the morning.)Let two volunteers write on the blackboard.Step3 学习重点词汇和短语，分析长难句First,work in groups to learn some useful phrases and translate some sentences.1wipe out(1)彻底摧毁；消灭The plague once could wipe out a village.鼠疫曾一度可以夺走整村人的生命。(2)擦净；擦掉Wipe out the bath before you use it.使用浴
4、盆前先把里面擦洗干净。These stains wont be easily wiped out.这些斑点不易去掉。2as long as(1)只要，如果Ill stay in Mexico as long as my money holds on.只要我的钱还能维持一天，我就在墨西哥待一天。Well go as long as the weather is fine.只要天气好我们就去。(2)既然，由于As long as there is a demand for these drugs, the financial incentive for drug dealers will be t
5、here.既然对这些毒品有需求，对贩毒者的金钱诱惑就存在。(3)(时间)长达He lived abroad as long as five years.他住在国外长达五年之久。3die of 死于(疾病、过度悲伤等)People are dying of cancer more and more often.死于癌症的人越来越多了。My grandmother died of grief soon after her husbands death.祖父去世不久，祖母就因悲伤过度而死。be dying for.渴望be dying to do sth. 渴望做某事die off 相继死亡(先后死
6、去)die out (种族、家族等)灭绝；消失4stop sth. in its tracks 终止；消灭We must take action to stop water pollution in its tracks.我们必须采取行动终止水污染。Francis felt he would like to stop this conversation in its tracks.弗朗西斯认为他应该立刻停止这场谈话。5be harmful to 对有害Chemicals are harmful to the environment.化学制品对环境有害。Smoking is harmful to
7、 your health.吸烟对你的身体健康有害。6Having killed up to 50 million people in 18 months, with a tendency to strike the young and fit rather than the old, the Spanish Flu is believed to have been the most acute epidemic in history.西班牙流感在18个月的时间里夺去了5,000万人的生命，该病似乎倾向于袭击年轻力壮的人，而非上了年纪的，它被认为是历史上最严重的一次传染病。本句是一个简单句。Ha
8、ving killed.18 months 为动词ing 短语，在句中作原因状语。with.rather than the old为介词短语作伴随状语。Not knowing her address, I cant write to her.由于不知道她的地址，我没法给她写信。Second,do some exercises in class to practice the main points.课后作业红对勾 课时作业15板书设计1wipe out2as long as3die of 死于(疾病、过度悲伤等)4stop sth. in its tracks 终止；消灭5be harmful to 对有害
