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1、Unit 12 Dont eat in class! 一短语1. in class 在课上2. on school nights 在上学的晚上3. school rules 学校规章制度break the rules 违反规章制度4. no talking 禁止交谈5. listen to music 听音乐6. have to 不得不7. take my dog for a walk 带狗去散步8. eat outside 在外面吃饭9. in the hallway 在走廊上10. wear a uniform 穿制服11. arrive late for class 上学迟到12. af
2、ter school 放学后17. be in bed 在床上13. practice the guitar 练习弹吉它14. in the cafeteria 在自助食堂里15. meet my friends 和我朋友见面16. by ten oclock.十点之前18. the Childrens Palace 少年宫19. help my mom make dinner 帮助我妈做饭20. in the hallways 在过道二重点句型 1.Dont arrive late for schoolDont be late for school2.Dont fight3.Dont lis
3、ten to music in the classroom.4.Dont run in the hallways5.Dont smoke .Its bad for your health.6.Dont play cards in school7.Dont talk in class8.Dont watch TV on school nights.9.Dont sleep in class.10.Dont play sports in the classrooms.11.Dont sing songs at night.12.Dont talk when you eat.13.Dont wear
4、 hats in class.14.Do homework by 10:00.15.Clean your house!16.Make the bed.17.Can we ? Yes ,we can . No, we cant.18.Do you have to wash your clothes? Yes, I do./No, I dont.三 重难点解析:1. 情态动词have to 的用法,意思是必须、不得不。(1)结构:主语have to动词原形其他(一般现在时,主语是第三人称单数时,用has to;句子是过去时,用had to.)如:We have to wear sneakers f
5、or gym class. 在体育课上,我们必须穿运动鞋。Tom has to practice the guitar every day. 汤姆每天必须练习弹吉它。I had to get up at 5:00 am last Monday. 上周一,我不得不早上5点起床。(2)否定形式:主语dont have to动词原形其他(一般现在时,主语是第三人称单数时,用doesnt have to. 句子是过去时,用didnt have to)Nick doesnt have to wear a uniform. 尼克不必穿制服。We didnt have to do our homework
6、at once. 我们不必马上完成作业。(3)疑问句:Do (Does或Did)主语have to 动词原形其他如:Do you have to stay at home on weekends? 周末你必须呆在家里吗?Yes, I do. / No, I dont.是的,我必须。不,我不必。Did he have to go to bed by 11:00 last night? 昨晚,他不得不11点前上床睡觉吗?2. 情态动词can的用法(1)表示能力,会能(在第一册中已经学习这种用法)Can you play the guitar? 你会弹吉它吗? can在否定句中,直接在can后加上n
7、ot,在疑问句中,把can放到主语前面,并且没有人称和数的变化。3. arrive late for 与be late for 意思相近,4 No talking ! 禁止交谈!no后面加上名词或动名词(doing)也表示不要做某事。与dont +do的用法相似。No wet umbrellas! / Dont put wet umbrellas here! 禁止放湿雨伞!No food! Dont eat food here! 禁止吃食物!No smoking! Dont smoke here! 禁止吸烟!5语法(祈使句)祈使句是用来表示请求、命令、叮嘱、号召或者劝告等的句子,这类句子的主语
8、常是第二人称you,也就是听话者,因而you常省去了。祈使句的开头是动词原形。1)Be型(即系动词原型be+表语其他)。如:Be quiet,please.否定句Dont + be+表语+其他。如:Dont be angry.2)Do型(即系动词原形宾语其他)。如:Open you books,please.否定句Dont +实义动词原形+宾语+其他。如:Dont eat in the classroom.3)Let型(即Let+宾语+动词原形+其他)如:Let me help you.Lets go at six oclock.否定句一般在宾语后加not。如:Let not watch TV.4)No+V-ing型(此种形式通常用于公共场合的提示语中,意为“禁止做某事“)如:No smoking! 严禁吸烟!No talking! 不许交谈!No passing! 禁止通行!No parking! 不许停车