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1、严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Unit3WhatwereyoudoingwhentheUFOarrived?By LiuKai from AiXin Middle School严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。一一单元分析单元分析本单元以本单元以“UFO”为话题展开一系列教学活动为话题展开一系列教学活动.通过通过UFO到达地球时不同人物的活动到达地球时不同人物的活动,学习过去学习过去进行时进行时when/while的用法的用法.观察图片
2、和利用图观察图片和利用图片来培养学生情景思维和讲故事的能力片来培养学生情景思维和讲故事的能力,这是本这是本单元的重点和难点单元的重点和难点.八年级学生对八年级学生对UFO会有强烈会有强烈的好奇心和探索欲望的好奇心和探索欲望,教材以次为入点教材以次为入点,使原本使原本枯燥的时态学习变得丰富多彩枯燥的时态学习变得丰富多彩.教师可借助这点教师可借助这点,引导学生开展丰富的想象引导学生开展丰富的想象,使课堂真正变成学科使课堂真正变成学科综合综合,心灵交汇的智慧场所心灵交汇的智慧场所.在本单元的教学全在本单元的教学全过程中过程中,采用任务型教学方式采用任务型教学方式,让学生通过独立让学生通过独立学习学习
3、,角色扮演角色扮演,实践体验和合作交流来掌握本实践体验和合作交流来掌握本单元的英语知识和技能单元的英语知识和技能.开发学生的思维能力开发学生的思维能力,发展他们的个性发展他们的个性,使学生形成积极的情感态度使学生形成积极的情感态度,主动思维和大胆实践的过程主动思维和大胆实践的过程.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。二二学情分析学情分析学生在七年级下册已学过现在进行时学生在七年级下册已学过现在进行时,而且掌握而且掌握了一些描述日常活动的短语了一些描述日常活动的短语,并能够使用现在进并能够使用现在进行时来描述日常活动行时
4、来描述日常活动,这有利于他们学习过去进这有利于他们学习过去进行时行时.同时同时,八年级下的学生对看图讲故事已有一八年级下的学生对看图讲故事已有一定的接触定的接触,这也有利于本单元故事讲述的顺利开这也有利于本单元故事讲述的顺利开展展.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。三三教学目标教学目标1语言技能目标语言技能目标2(1)能谈论过去某个时刻正在发生的事情,如:Iwassittinginthebarberschair.3(2)能询问过去某个时刻正在发生的事情,如:WhatwereyoudoingwhentheUFOarri
5、ved?4(3)能用过去进行时态讲故事.2语言知识目标语言知识目标3(1)能用过去进行时态描述过去某一时间内正在发生的事,如:Iwasstandinginfrontofthelibrary.4(2)能正确使用when/while引导的时间状语从句,如:Whilehewasbuyingasouvenir,agirlcalledthepolice.3情感态度目标情感态度目标4(1)通过了解有关UFO的知识,培养学生从小热爱科学,勇于探索的精神.5(2)通过课堂讨论,教育学生从小树立辨证的看待问题,乐观向上的人生观.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并
6、处理各类违纪行为或突发事件。4文化意识目标文化意识目标了解自然现象在语言学习中具有的文化涵义了解自然现象在语言学习中具有的文化涵义.5学习策略目标学习策略目标(1)认知策略认知策略:借助猜测的方法推测单词的意思,用归类的方法记忆单词.(2)交际策略交际策略:通过roleplay等的活动,培养学生的合作能力,并注意倾听他人的意见.(3)资源策略资源策略:鼓励学生通过各种手段,搜集有关UFO的不同信息,帮助学生拓展知识,开阔视野,提高自主学习的能力.(4)调控策略调控策略:通过课堂反馈和Selfcheck,让学生明确自己的学习状况,不断调整学习策略.严格执行突发事件上报制度、校外活动报批制度等相关
7、规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。四四重点难点重点难点1教学重点教学重点:重点词汇重点词汇:bathroom,bedroom,kitchen,bought,got,land,kid,climb,jump,shout,rode,ran,met,heard,told,became,flew,rang,cat,anywhere,happen,accident,plane,modern,kill,murder,bright,playground,bell,close,silence,meaning,earth,hero;重点句型重点句型:Whatwereyoudoingw
8、hentheUFOarrived?Iwassittinginthebarberschairwhenitarrived?Whilehewasbuyingasouvenir,agirlcalledthepolice.话题话题:以UFO为话题,讲述UFO到达地球时人们的活动:看图讲故事.2教学难点教学难点:能用过去进行时讲故事.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。教学过程教学过程:第一课时第一课时(1a1c)通过教师做动作让学生猜测这活动来复习现在进行通过教师做动作让学生猜测这活动来复习现在进行时态时态,向学生展示自己的住所
9、来引出本课新单词向学生展示自己的住所来引出本课新单词.再再利用图片呈现过去进行时利用图片呈现过去进行时,之后用之后用pairwork来巩固来巩固,让学生猜我在做什么来引出让学生猜我在做什么来引出UFO这个话题这个话题.从而顺从而顺利过渡到课文利过渡到课文,并完成并完成1a,1b.之后是一个之后是一个pairwork再一次巩固重点句型和词汇再一次巩固重点句型和词汇.之后转入之后转入1c.用一个用一个groupwork记者采访的活动开展记者采访的活动开展.并把听力转化为并把听力转化为口语练习口语练习.接着是一个语法总结接着是一个语法总结,最后再利用旧教材最后再利用旧教材初二下册初二下册Lesson
10、95的图片让学生先口头叙述图片的图片让学生先口头叙述图片,为家庭作业写作做一个铺垫为家庭作业写作做一个铺垫.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Unit3 What were you doing when the UFO arrived?UFOWhat were you doing when the UFO arrived?Unit 3 Period 1严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。bedroombathroombarber shopba
11、rberkitchenWordstudyWhats he doing now?What was he doing at three oclock yesterday afternoon?He football.was playing.Heis playingfootball.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。What was she doing at seven oclock yesterday morning?SheWhats she doing now?Sheis running.was running.严格执行
12、突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Whataretheydoingnow?TheyWhat were they doing at ten last night?Theyare dancing.were dancing.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Ask and answer in pairsWhere were you at 6:00 yesterday evening?What were you doing?1inariverswimmin
13、g2inaparkplayingbasketball3inashopdoingsomeshopping4athomecooking5athomedoingmyhomeworkIwaswatchingaTVprogramaboutUFO.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Did you see a UFO?UFO:UnidentifiedFlyingObject不明飞行物不明飞行物严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。1._ I was in t
14、he bathroom.4._ I was in the kitchen.2._ I was in my bedroom.5._ I was in my barber shop.3._ I was in front of the library.6._ I was in the barbers chair.dbacef1a A TV reporter is asking“Where were you when the UFO arrived?”Match the statements with the people in the picture.严格执行突发事件上报制度、校外活动报批制度等相关
15、规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。1b Listen to the reporters questions and circle the correct responses.a.standing in front of the library/studying in the libraryb.cleaning my room/sleeping latec.making a milk shake/cooking dinnerd.getting out of the shower/talking on the phonee.eating lunch/cutting h
16、airget out 出去；离开 get out of 从出来 get out of the shower 洗完澡出来 cut 剪；切；割严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。A:What was/weredoing when the UFO arrived?B:was/were 严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Reporter:So,whatwereyoudoingwhentheUFOarrived?Girl1:Well,Iwasstand
17、inginfrontofthelibrary.Boy1:Iwassleepinglate.Woman1:Iwascookingdinner.Groupwork:严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Reporter:Howaboutyou?Man1:Iwasgettingoutoftheshower.Man2:AndIwascuttinghair.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。过去进行时过去进行时含义含义：表示表示过过去去某某个个时时刻刻正
18、在正在进进行行的的动动作作。结构结构：be(was/were)+doing例句例句：Whatwereyoudoingatninelastnight?Iwastakingashoweratninelastnight.summary严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。(7)(1)(2)(3)(8)(4)(5)(6)look out of his windowdrink some waterplay games boatbuy some fruitsell some fruitread newspapersplayfootb
19、allfish1WriteashortpassageaboutthepictureInthepark.2MakeasurveyaboutwhatyourfamilyweredoingwhenyouarrivedhomelastFriday?Homework:严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。第二课时第二课时(SectionA2a3b)让学生齐唱让学生齐唱“Ifyouarehappy”,活跃气氛活跃气氛.值日生上台汇报上节课布置的作业值日生上台汇报上节课布置的作业,然后完然后完成成2a,2b的练习的练习.接着利用图片重
20、点对接着利用图片重点对when和和while的用法作比较并总结的用法作比较并总结.并做一个小练习并做一个小练习.然后阅读然后阅读3a的电子邮件的电子邮件,为图片排序为图片排序.并按次并按次序复述故事序复述故事.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Unit3 What were you doing when the UFO arrived?UFOWhat were you doing when the UFO arrived?Unit 3 Period 2严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时
21、发现、制止、汇报并处理各类违纪行为或突发事件。_ The alien visited the Museum of Flight._ The alien bought a souvenir._ A UFO landed on Center Street._ The alien went into a store._ An alien got out of the UFO.22a Listen and order these statements 1-5.land 5413alien严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。1.
22、The boy was walking down the street _ a UFO landed.2.The girl was shopping _ she saw the alien get out.3._ the alien was buying a souvenir,the girl called the police.4._ the alien was visiting the museum,the boy called the TV station.whenwhenWhileWhile2b Listen again.Complete the following sentences
23、 with“when”or“while”.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Comparing the following sentences:The girl was drawing when the UFO landed.While the girl was drawing,the UFO landed.While they were swimming,the alien got out.They were swimming when the alien got out.严格执行突发事件上报制度、校外活动报批制度
24、等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。He was talking on the phone while they were swimming.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。When和和while的用法与的用法与区别区别1）延续性动词和非延续性动词）延续性动词和非延续性动词延续性动词指动作可以延续一段时间，延续性动词指动作可以延续一段时间，而不是瞬间结束。而不是瞬间结束。如：如：work、study、drink、eat等。等。非延续性动词指动作极为短暂，瞬间结非延续性动词指动作极为
25、短暂，瞬间结束。束。如：如：start、begin、hit、jump、knock等。等。严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。2）在本单元中，出现了以）在本单元中，出现了以when和和while引导的时引导的时间状语从句。间状语从句。when表示表示“当当的时候的时候”。从句中既可。从句中既可用延续性动词，又可用非延续性动词，这些动词用延续性动词，又可用非延续性动词，这些动词既可以表示动作，又可表示状态。从句中的动作既可以表示动作，又可表示状态。从句中的动作既可和主句的动作同时发生，又可在主句的动作既可和主句的动作同时发
26、生，又可在主句的动作之前或之后发生。如：之前或之后发生。如：MarywashavingdinnerwhenIsawher.Theboywasstillsleepingwhenhismothergothomeyesterdaymorning.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。while表示表示“在在的时候的时候”、“在在期间期间”。它强调主句的动作与从句的动作同时发生或主句的动它强调主句的动作与从句的动作同时发生或主句的动作发生在从句的动作过程中。作发生在从句的动作过程中。while从句中必须是表从句中必须是表示动作或
27、状态的延续性动词。如：示动作或状态的延续性动词。如：TheweatherwasfinewhilewewereinBeijing.ShecalledwhileIwasout.如果主句的动作在从句的动作过程中发生，从句如果主句的动作在从句的动作过程中发生，从句常用进行时。如常用进行时。如:Whilewewereswimmingsomeonestoleourclothes.Donttalksoloudwhileothersareworking.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Summary1.when可指时间点，又可指时
28、间段，从句可指时间点，又可指时间段，从句中可用延续性动词，也可用非延续性动词。中可用延续性动词，也可用非延续性动词。2.while总是指一个时间段，从句中必须用总是指一个时间段，从句中必须用延续性动词。延续性动词。3.统一时态：主句过去式，统一时态：主句过去式，从句也是过去式。从句也是过去式。严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。ExercisesFill with“While”or“When”1._ May was talking on the phone,her sister walked in.2._ Rita b
29、ought her new dog,it was wearing a little coat.3._ I saw Carlos,he was wearing a green shirt.4._ I was dancing,he was singing loudly.5._ Linda finally saw Davy,he was jumping with a dog.6.I was cleaning my room _ the fire broke out.WhenWhileWhileWhenWhenwhen严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并
30、处理各类违纪行为或突发事件。12345严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Dear Jack,I had a very unusual experience on Sunday.At around ten oclock in the morning,I was walking down the street when a UFO landed right in front of me.You can imagine how strange it was!An alien got out and walked down
31、Center Street.experience经历；体验经历；体验around大约大约(=about)strange奇怪的；陌生的奇怪的；陌生的right正好；恰恰正好；恰恰严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。I followed it to see where it was going,and I was very surprised when it went into a souvenir shop.While it was looking at the souvenirs,the shop assistant
32、called the police.Before the police arrived,the alien left the shop and then visited the Museum of Flight.While the alien was in the museum,I called the TV station.Isnt that amazing!Tedfollow跟随；追随跟随；追随Isnt that amazing!=That is amazing.(否定疑问句)amazing 惊人的，了不起的严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报
33、并处理各类违纪行为或突发事件。3b PAIRWORK Cover the story.Look at the pictures and take turns to tell the story.One day,a UFO landed in front of me when I was walking down the street.An alien got out.I was very afraid,and followed it.The alien went into a souvenir shop.While it was looking at the souvenirs,the sho
34、p assistant called the police.Before the police arrived,the alien left the shop and went into a museum.When the alien was in the museum,I called the TV station.That was amazing!E-mailthealienandtellhim:Wherewereyou/yourfamily/classmateswhenhetookoff?Whatwereyou/yourfamily/classmatesdoingatthattime?H
35、omework:严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。第三课时第三课时(SectionA4,SectionB1-2c,Selfcheck)看图复习看图复习when和和while的用法的用法.利用图片引出生利用图片引出生词词,接着完成接着完成SectionB1-2c的内容的内容,然后是一个然后是一个对于交通事故的小采访并完成对于交通事故的小采访并完成selfcheck1的练的练习习,并以表格形式展示并以表格形式展示HeYan昨天一天的活动昨天一天的活动安排安排,让学生用让学生用when和和while引导的特殊疑问句引导的特
36、殊疑问句来谈论表格的内容来谈论表格的内容.最后让学生填表完成自己昨最后让学生填表完成自己昨天的活动安排天的活动安排,并询问两个好友的安排并询问两个好友的安排,使本堂使本堂课的教学落实到写的层面上课的教学落实到写的层面上.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Unit3 What were you doing when the UFO arrived?UFOWhat were you doing when the UFO arrived?Unit 3 Period 3严格执行突发事件上报制度、校外活动报批制度等相关规章制度
37、。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。A:What was the girl doing when the UFO took off?B:While the girl was.C:When the UFO took off the man was.Look at the picture.Say what each person was doing when the UFO took off.Make sentences with“when”and“While”.eaticecreamtakephotosrideabiketalkwithapoliceman严格执行突发事件上报
38、制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。shoutclimbWhat were they doing when you saw them?jumpfollow严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。1 Match the sentences with the pictures.1.Hes scared.2.Its climbing a tree.3.Its jumping down.4.Shes shouting.cdbascaredcat严格执行突发事件上报制度、校外活
39、动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。2a Listen.Check()the six things you hear in the chart.Action1.saw a cat in a tree2.called the newspaper3.called the TV station4.took a photo5.said“Good boy!”6.was too scared7.called the police8.rode his bicycleride-rode骑骑 inatree在树上在树上callthepolice给警察打电话，报警给警察
40、打电话，报警严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。2b Listen again.Write the letter of who did each thing in the chart.ActionWho ActionWho1.saw a cat in a tree5.said“Good boy!”2.called the newspaper6.was too scared3.called the TV station7.called the police4.took a photo8.rode his bicyclee
41、cbdfaa.the newspaper reporter d.the woman b.the man e.John c.the cat f.the police officer严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。2c PAIRWORK Talk about the people in activity 2a.Student A begins a sentence with the word“while”.Student B completes the sentence.A:While John was walking
42、 to school B:While John was walking to school,he saw a cat in a tree.ActionWho ActionWho1.saw a cat in a tree5.said“Good boy!”2.called the newspaper6.was too scared3.called the TV station7.called the police4.took a photo8.rode his bicycleecbdfa严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。
43、happened an accidentP:What were you doing when the accident happened?A:I was riding my bike when the accident happened.B:C:Self check严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。1.Fill in the blanks with the words given.take off get out land shout shop1.The girl was when she saw a car acc
44、ident.2.I was so tired this morning.It was difficult to of bed.3.My flight to New York from Beijing International Airport.4.It was raining when the plane in London.5.Dont !I can hear you.shoppinggetouttookofflandedshout严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。Look at what He Yan did y
45、esterday.Write what you were doing at these times.While He Yan was at the doctors,I was going to the class.While she was having English class,I was having a test.While she was having lunch with her mother,I was playing in the park.While she was visiting her aunt in hospital,I was studying in the cla
46、ssroom.While she was going shopping,I was going home.9:009:30at the doctors10:0011:00had English class12:001:00had lunch with her mother2:003:30visited aunt in hospital4:005:00went shopping严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。3.Circle the words that dont belong.1.walk climb jump d
47、own alien2.bathroom bedroom newspaper kitchen3.barber UFO cut hair barber shop4.when scared while how long严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。What were you doing at these times last Sunday?Fill in the table.Then interview two classmates.YouStudent 1Student 29:00 am11:30 am1:00 pm
48、4:00 pm6:00 pm9:00 pmA:What were you doing at nine oclock last Sunday morning?B:I was sleeping.How about you?A:I was doing my homework.B:Youre kidding!And you?C:I was talking on the phone.sleepingdoing homeworktalking on the phoneHomework:1Interviewwhatyourfamilyweredoingatthistimeyesterday.2Writeas
49、hortpassageaboutyouryesterday.严格执行突发事件上报制度、校外活动报批制度等相关规章制度。做到及时发现、制止、汇报并处理各类违纪行为或突发事件。第四课时第四课时(SectionB34b)先让值日生汇报上节课的调查结果先让值日生汇报上节课的调查结果,接着教师编写小故事接着教师编写小故事引出新单词并板书在黑板上引出新单词并板书在黑板上.在此基础上完成在此基础上完成SectionB3,读课文前先让学生讨论文中的图片读课文前先让学生讨论文中的图片,使他们能快速进入状使他们能快速进入状态态,让学生速读后回答问题让学生速读后回答问题:“WhofoundthedogforLind
50、a?”;再读课文回答问题再读课文回答问题.学生根据教师提供的问题复学生根据教师提供的问题复述课文述课文.复述课文后过渡到复述课文后过渡到SectionB4a,先和学生一起简单先和学生一起简单谈论故事发生的地点谈论故事发生的地点,时间和人物时间和人物,让学生以小组为单位让学生以小组为单位编故事编故事,比一比哪个小组的故事编的有趣合理比一比哪个小组的故事编的有趣合理.最后设计最后设计任务任务,1让学生选一选不同职业的人对警察的提问应作怎让学生选一选不同职业的人对警察的提问应作怎样的合理回答样的合理回答,2帮助警察设计向被调查者所提的问题帮助警察设计向被调查者所提的问题,3让学生扮演警察和被调查者让