八年级英语上册 Unit 4《Our World》Topic 2 Section A 教案 仁爱版.doc

topic 2 are you sure there are ufos?section athe main activities are 1a and 3. 本课重点活动是1a和3。. teaching aims and demands 教学目标1. learn some new words and a phrase:robot, scientist, appear, take the place of, situation, repair, machine, truck, mend2. learn some useful sentences:(1)what can robots do for us?(2)robots can take the place of humans to do hard or boring work in some situations.(3)they can also do lots of dangerous work instead of humans.3. learn how to express certainty and uncertainty:(1)im sure robots can do some work faster and better than humans.(2)are you sure? yes, quite sure.(3)do you think you will have a robot in 20 years? yes, im sure. /no, im not sure. 4. talk about modern science and technology. teaching aids 教具录音机/玩具/小黑板/图片. five-finger teaching plan 五指教学方案step 1 review 第一步 复习(时间:8分钟)教师将一个玩具机器人和一个玩具汽车进行比较，复习形容词的比较级和最高级，引出生词及be sure的用法，导入新课。1. (师生对话，边复习边引出生词。教师出示玩具机器人和小汽车。)t:boys and girls. look, what are these?ss:they are toys.t:which one do you like better, the robot or the car? a robot is a machine that helps people do some work.(板书并要求学生掌握。)robot, machiness:the robot.t:why do you think so?s1:because i think the robot is more interesting than the car.s2:yes, i agree. i think it is the most interesting of all the toys.t:yes, i think so. scientists invented many useful inventions.(教师板书并要求学生掌握。)scientistt:newton is a scientist. edison is a famous scientist, too. some students in our class want to be scientists. right?s3:yes, im sure.(引导学生用im sure来回答。)2. (教师讲解im sure 句型。初步让学生理解be sure是表示肯定的一种说法。)t:then, when did the first robot appear?(板书并要求学生掌握。)appears4: i dont know .t:oh, it was invented in 1921. many students are interested in robots. could you tell me what robots can do for us?(让学生讨论，汇报讨论结果。)s5:robots can help us a lot.s6: robots can do dangerous work.s7: robots can help us clean the room.s8: t:very good. robots can do many different kinds of jobs. robots can take the place of humans to do lots of dangerous work. it means robots can do lots of dangerous work instead of humans in some situations.(板书并要求学生掌握。)take the place of situationt: we know robots can do a lot of things for us. my bike is broken. i have to repair it. are you sure robots can mend my bike?(板书并要求学生掌握。)repair = mends9:im not sure. (引导并帮助学生回答。)s10:im sure they can repair it.t:im sure, too. are you sure robots can lift trucks?s11:im not sure.s12:im sure.t:im sure, too.(板书并要求学生掌握。)truckstep 2 presentation 第二步 呈现(时间:8分钟)听录音，学习1a内容。1.(听两遍1a录音，回答问题。)t: robots are very useful to humans. do you want to know more about robots? now lets listen to 1a and answer the following questions:(出示小黑板。)(1)where did kangkang go last weekend?(2)can robots do any work faster and better than humans?(核对答案。)2.(学生默读1a，教师板书重要结构和句型。)(板书并要求学生掌握。)tell about do sth. instead of sb.something like take the place of sb. to do sth.be sureim sure step 3 consolidation 第三步 巩固(时间:10分钟)听录音，感受英语。用关键词表演对话，培养学生听说能力。1. (学生先自己朗读1a, 然后跟读，注意语音语调。标出关键词。) t: read 1a first, then listen to the tape and follow. mark the key words.(板书关键词)the science center, invent, appear, take the place of, hard or boring, in some situations, dangerous, instead of, im sure 2. (让学生根据关键词两人一组练习1a，然后找几组学生到前面表演对话。)t: please practice 1a in pairs and then act it out in the front of the classroom according to the key words.3. (写出机器人的优点，完成1b。) t:well done! now please look at 1b. can you write down the advantages of robots according to the dialog? ss:yes. t: are you sure you can write down the answers without looking at the dialog? ss:yes. were quite sure. t: ok. ill ask three students to come to the blackboard and write them down. (核对答案。)step 4 practice 第四步 练习(时间:12分钟)利用图片，小组讨论、师生情景对话完成2和3。让学生熟练运用本话题的功能用语。1. (师生对话谈论机器人，导入2。)t:boys and girls, we have learned something about robots. what else can robots do for us?s1:they can repair bikes.s2:they can look after babies.t:look at the pictures. try to describe them in english one by one. whats the first robot doing, s3?s3:its saving people in danger.s4:its repairing machines.s5:its lifting parts of trucks.2.(听2录音，完成2并核对答案。)t: listen to the tape and number the pictures.3.(小组对话，巩固所学短语。)t: please discuss robots in groups.example:s6:what can robots do for us?s7: they can save people in danger, repair machines and lift parts of trucks.s8: they can also carry heavy things, mend roads and catch fish.(如果不全面，组内其他学生补充。)4. (小组讨论完成3。)t: now please discuss the advantages and disadvantages of robots. then fill out the table. you can add your own opinions.(让学生讨论两分钟。完成3。)(学生自由对话。)t:please make a dialog according to the information above and your own opinions. example:s9:are you sure robots will make humans lose their jobs?s10:yes, im sure. / no, im not sure.s9:is it good or bad for us?s10:its good. /its bad for us.s9:do you think you will have a robot in 20 years?s10:yes, im sure. / no, im not sure.(找几组学生表演对话。)step 5 project 第五步 综合探究活动(时间:7分钟)用be sure句式进行探究活动，培养学生的综合语言运用能力。1. (假设学生是科学家，设计了新一代的机器人，两人一组对话或写一篇短文介绍，尽量使用be sure句式。) t: suppose you are a scientist, and you have invented a new kind of robot. make a dialog or write a passage to introduce it. try to use the sentence patterns with “be sure”.2. homework: 课后搜集有关机器人和不明飞行物的信息，然后把搜集的信息用英语写一个报告。尽量使用be sure句式并加进自己的观点。板书设计:are