九年级英语全册Unit9WhenwasitinventedSectionA(3a4)教案人教新目标版

1、山东省郯城县第三初级中学九年级英语全册unit 9 when was it invented section a(3a-4)教案 人教新目标版主备人： 课型new课时第2课时时间 年 月 日分管领导验收结果第 周 第 课时 总第 课时 教学目标1、reading and writing2、掌握词汇 buld light buld microwave microwave oven重点、难点 1.the new words and phrases 2.improve the reading skills 3.writing教 学 过 程教师活动学生活动修改意见step1. warm up. 1).

2、daily report 2)new words and expressionsbuld light buld microwave microwave ovenstep23a pairworkmake a list of five helpful inventions and five annoying.helpful inventionsannoying inventionsexample: telephoneexample:alarmclockstep33b pairworka: what do you think is the most helpful invention?b :i th

3、ink the most helpful invention is the light bulb.a: why is that?b: well, it gives people more time to workand play every day.a: what do you think is a helpful invention? b: i think it is the car. a: why is that? b: well, it makes it possible for people to move to distant places faster. step4 exx1) t

4、he bike _(fix) up by xiao ming yesterday. 2) sunglasses _ (use) for protecting peoples eyes. 3) a picture _(put) up on the blackboard. 4) french_ (speak) in france. 5) teenagers should _(allow) to choose their own clothes.the passive voice.被动语态主动语态变为被动语态的步骤:1.把原主动句中的宾语转换为被动语态的主语。2.把动词改为被动形式，即 “be +

5、过去分词”。注意 be动词要按新的主语的人称和数进行变化，时态要和原来的主动语态的时态保持一致。3. 原来主动语态句中的主语，如果需要，就放在by后面以它的宾格形式出现。如果没有必要就可以省略。其他的成分 (定语，状语) 不变，句式也不能变。ss listen carefully and answer questions learn the new words and expressions. then make sentences with them.then ask students to say about the answersatomic bomb （原子弹）missile（导弹）r

6、ifle (步枪)chemical weaponinstant glue(速干胶)bike computercar trainask students to make the conversations like this then check some studentsthe passive voice.被动语态 英语中动词有主动和被动两种语态，主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者， 在被动语态中动作的执行者有时用by短语表示出来。被动语态的构成:助动词be+ (及物动词的) 过去分词 am (is, are) + done was (were) + done小结板书设计 phrases helpful inventions annoying inventionsexample: telephoneexample: alarm c