辽宁省辽阳市第九中学九年级英语全册 Unit 6 When was it invented？Period 3导学案（无答案）（新版）人教新目标版.doc

unit 6 when was it invented？period 3学习目标总结一般过去时态被动语态重点难点运用一般过去时态的被动语态完成相应练习学法指导观察-总结-思考-运用巩固练习教学过程一、 导入（启发探究 3分钟）sa: when was the car invented ? sb: it was invented in 1885.sa: when were electric slippers invented? sb: they were invented last year.sa : who were they invented by? sb: they were invented by julie thompson.sa: what were they used for? sb: they were used for seeing in the dark.thomas /tms/ watson /wtsn/托马斯 沃森 p.44questions:1. what invention do you like best? why?_2. what invention do you hate a lot?_3. list as many of them as you can._二、自学（自主探究 6分钟）1、拼读、记忆单词2、【新词自查】根据汉语提示完成单词。（1）. the boy lost his parents during the last years earthquake (地震).（2.） the students were asked to translate (翻译) the story into english.（3）. the police found the lost boy under the destroyed house through an instrument (仪器)。（4.） i only have some biscuits (饼干) and a glass of milk every morning.（5）. if you cant eat all these fruit , you may put some into your fridge (冰箱).3、阅读一般过去时态的被动语态句子，感悟其结构、用法、句型变化。(1.) -when was the zipper invented?-it was invented in 1893.-拉链是什么时候发明的？-它是在1893年被发明的。(2). -who was it invented by? -it was invented by whitcomb judson.-它是由谁发明的？-它是被惠特科姆.贾德森发明的。(3). the fridge was sold at a low price. 这个冰箱被以低价卖掉了。(4.) the students were told not to eat or drink in class. 学生们被告知在课堂上既不吃或喝任何东西。三、交流（合作探究 10分钟）完成教材4a-4c的任务1. 要求学生翻开课本p44，参照4a所提供的信息和例句，用被动语态改写句子.给出5分钟的时限，并请另4位同学在黑板上改写，全班集体核对答案。（5分钟）2.用所给单词的正确形式完成4b句子。给出5分钟的时限，并请另个5位同学朗读句子，全班集体核对答案。3. 先浏览4c的短文，确定空格处的动词是用主动形式还是被动形式，然后用动词的正确形式填空完成短文。给出5分钟的时限，并请1位同学朗读短文，全班集体核对答案。4. 小结训练。要求学生在规定的时间内完成一个小练习。并请若干学生给出自己的答案。有错误的话及时解决纠正。（2分钟）用所给词的适当形式填空。1. this instrument is used for playing (play) music in class. 2. how many magazines were borrowed (borrow) from the library today? 3. edison was a great inventor. he had over 1.000 inventions in his life.(invent). 4.a picture was put (put) on the blackboard before class.5. plates and dishes werent washed (not wash) after supper yesterday.四、总结（引深探究 15分钟）重点短语1. at a low price 以一个很低的价格 2. take these photos 拍这些照片 3. go out alone 单独外出 4. translate the book into different language 把书翻译成不同种的语言5. all of sudden突然 二、一般过去时的被动语态句型的变换方法一般过去时被动语态句型变换应围绕was, were进行，否定形式应在其后加not, 一般疑问句形式应将其提至句首，特殊疑问句形式应将一般疑问句置于特殊疑问词后面，反意疑问句形式应保留was / were。如：his computer was not stolen by thieves last night. 他的电脑昨天晚上没有被小偷偷走。 was your homework finished in time yesterday evening? 昨天晚上你及时完成家庭作业了吗？ when was your letter written? the day before yesterday? 你的信是什么时候写的？前天吗？ why was this problem not worked out by you? 为什么你没有解出这道试题？ your bike was not repaired last night, was it? 你的自行车昨晚没有被修理，是吗？ 三、一般过去时的被动语态疑问句的回答方法一般过去时的被动语态的一般疑问句形式肯定回答用“yes, . was / were.”，否定回答用“no, . wasnt / werent.”; 特殊疑问句应抓住特殊疑问词进行回答，可用简略方法，也可用完整方法; 反意疑问句也应用“yes, . was / were.”或“no, . wasnt / werent.”进行回答。如：was your office cleaned yesterday afternoon? 你的办公室昨天下午打扫了吗？ yes, it was. / no, it wasnt. 是的，打扫了。/ 不，没有打扫。 were your rooms painted again last week? 你的房间上周重新粉刷了吗？ yes, they were. / no, they werent. 是的，重新粉刷了。/ 不，没有重新粉刷。 your debt was paid off at last, wasnt it? 你所欠的债最终被还清了，是吗？ yes, it was. / no, it wasnt. 是的，被还清了。/ 不，没有被还清。五、练评（包含“考点链接” 应用探究 6分钟）1.昨天有人看见他掉进河里了。 he to fall into the river yesterday.2.什么时候发现新大