1,Unit 4 Dont eat in class.,2,Lets play a game! Who knows these signs?,keep rules,break rules,school rules,class rules,family rules,library rules,dining rules,遵守规则,违反规则,校规,班规,家规,图书馆规则,进餐规则,3,We cant rule the country without rules. 没有规章制度就不能治理好国家。,4,SectionA Summary:,How to talk about rules,1. 祈使句,Dont run in the hallways. Dont arrive late for class.,2.用情态动词can 或 cant,We cant drink in class. We can eat in the dining hall.,5,Review:,Example: 肯定祈使句 否定祈使句 Sit down. Come in. Eat in class. Listen to music outside. 5. Do your homework at school.,Dont sit down.,Dont come in .,Dont eat in class.,Dont listen to music outside.,Dont do your homework at school.,表示请求,建议,命令,禁止等语气的句子, 其结构为省去主语you,以动词原形开头 .,祈使句,6,特殊情况：,1.Please have a seat.,1.Please dont have a seat .,2.David, sit down.,2.David, dont pay attention.,3.Be quiet.,3.Dont be quiet.,4.Lets go home together,4.Lets not go home together,否定,否定,否定,否定,5.Dont smoke here.,同义句,No smoking here.,7,School rules:,1. _ arrive late for class/school.,2. Dont eat _.,3. _ fight.,4. _ the school uniform.(校服),5. _ wear a hat in_.,6. _ run in the _.,7. _ _ music in the classrooms/hallways.,Dont,in class,Dont,Wear,Dont class,Dont hallways,Dont listen to,1.Dont r_ in the hallways.,un,2.Dont a_ late for the meeting.,rrive,3. He likes singing and dancing.（否定句）,He doesnt like singing or dancing.,4.在外面吃饭,5.学校规章制度,6.上课迟到,7.在课上,8.和某人打架,9.arrivearrivesarrivingarrived,10.fight,eat outside,school rules,be / arrive late for class,in class,have a fight with sb./ fight with sb.,fightsfightingfought,break rules,keep /obey rules,9,1c: Pair work,A: What are the rules?,1. Dont arrive late for class. 2. Dont run in the hallways. 3. Dont eat in the classroom. 4. Dont listen to music in the classrooms or the hallways. 5. Dont fight.,B: We cant arrive late for class.,10,A: Can we listen to music in class?,B: No, we cant. We cant listen to music in class , but we can listen to it outside.,11,根据句意，用can和cant填空 1.Mr Green smoke here, because theres a sign on the wall. It says “No smoking.” 2.Its very hot outside. You wear a hat. 3.We eat in the classroom, because its impolite to teachers. 4.The students read books and magazines in the library.,cant,can,can,cant,12,Select the correct verb from the choices in parenthesis .选择正确的动词填空。 1.(Can/Does)_ we eat in class? 2.(Dont/Has to)_ wear a hat in class ! 3.Does Bill (have to /can)_ go to bed now? 4.Francisco and Andrew (cant/dont) _ come? 5.(Do/Have to)_ they wear sports shoes ?,13,SectionB Summary:,1.Talk about family rules 2.have/has have to /must,14,the Jones family,Can you list the rules of the Jones family?,Family Rules,_ _ _ _ _ _,Dont sleep too late on Sunday.,Dont watch TV late at night.,Dont eat on the bed / in bed.,Clean your bedroom on Saturday.,Dont talk loudly at home.,Dont play the guitar late at night.,15,用have to或has to填空 1.We clean our classroom after school. 2.She make her bed after getting up. 3.Its late. Mr Beckman go to work by car. 4.Emily and Peter join a music club. They practice guitar every day.,have to,have to,has to,has to,16,have to,dont /doesnt have to,必须 ，不得不,不必,1. 我们必须穿校服吗？,2. 玛丽必须穿运动鞋上体操课吗？是的，她是。,3. 琳达，你不必在上午七点前到校。,4. 他们在学校不得不做什么呢？,5. 我们必须在课上保持安静。,17,must与have to,在英语中，must与have to都可以表示“必须”，但其用法有所不同。,must表示说话人的主观看法，认为有义务有必要。,如：我们必须努力工作。（是我们要这样做的） We _ _ _.,have to 表示客观需要，即周围的环境、习惯、协约等要求某人“不得不作某事”。,如：我们不得不努力工作。（环境使我们不得不这样做）We _ _ _ _.,must study hard,have to study hard,18,(2)must的否定形式为 _, have to的否定形式为_, 两者意义也不同。前者表示“不应该”、“不许可”、“禁止”等，后者表示“不必要”。 如：你们不能在马路上踢足球。 You _ play football on the road. 你今天不必练钢琴了。 You _ _ _ practice the piano today.,(3)要表示过去或将来“必须”，则必须用have to的相应形式。 如：昨天我们不得不去购物。 We _ _ go shopping yesterday.,mustnt,dont have to,mustnt,had to,dont have to,19,练一练： 1.He has to stay at home. 否定：He _ _ _ stay at home. 一般疑问：_ he _ _ stay at home? Yes, he _. / No, he _. 划线提问：_ _ he _ _ _? 2. She _ come early next time. A. dont have to B. hasnt to C. doesnt has to D. doesnt have to 3. Does she have to get up so early tomorrow morning? Yes, she _. A. is B. have C. has D. does,doesnt have to,Does have to,does doesnt,What does have to do,20,4. I like the party so much, but I _ go home. Its too late. A. must B. have to C. may D. can 5. Does Linda _ to go to school on weekends? No, she _. have, dont B. has, doesnt C. have, doesnt D. has, havent,21,1 在教室里： 在课堂上： 在走廊上： 在学校里：,in the classroom,in class,in the hallways,at school = in school,单元知识点,2 下课后： 放学后： 在上学的晚上： 在晚上： 到10点钟之前：,after class,after school,on school nights,at night,by 10 oclock,22,3.不要迟到： 上课/上学不要迟到