七年级英语下册第四单元课件sectiona3a3cppt1（恢复）ppt课件

Unit 4 Dont eat in class. 教学 课件设计 洪江市托口中学 刘利群,Unit 4 Dont eat in class.,Section A grammar focus3c,What do we have to do at school or in the classroom? What cant we do ? Lets look and say some school or class rulers.,教师寄语：No rules, no standards. (没有规矩不成方圆。）,We have to do some reading every morning.,We have to exercise every day.,We have to work hard and help each other.,We have to clean our classroom and keep it clean every day.,.,We have to wear our school ID card.,We have to do homework after school.,.,We cant run in the hallways.,=Dont run in the hallways.,Dont play sports in the classroom or in the hallways.,But we can play it outside.,Dont talk in class.,Dont talk with each other in class.,Stop talking in class.,Dont smoke . Its bad for your health.,Dont play cards at school.,Dont listen to music in the classroom.,Lets talk about our family rules.,Dont waste water.,Turn off the lights when we leave the room.,Pairwork,eat in bed,watch TV late,talk loudly on the phone,get up late on Sundays,play computer games late at night,sing loudly at night,make the bed after getting up,clean the bedroom,A: What do you have to do at home? B: We have to A: What cant you do ? B: We cant ,Pairwork,情态动词can的用法 1) 表示能力 “会, 能” Can you play the guitar? 你会弹吉他吗？ Jim can speak Chinese.吉姆会说中文。 I can dance and sing. 我能唱歌又能跳舞。,2) 表示允许、许可, “可以”、“能” Can the students run in the hallway 学生们可以在走廊上跑吗？ We can eat outside. 我们可以在外面吃东西。,注意: 和大部分情态动词一样, can在否定句中, 直接在can后加上not, 在疑问句中, 把can放到主语前面, 并且没有人称和数的变化。,Grammar,have to的用法 表示客观的必要性：“必须，不得不”，在一定意义上与must可以互换。must没有人称，数和时态的变化。have to有人称，数和时态变化。 We have to do homework after school. They must be on time for class. She has to be quiet in the library. Do you have to go to school on time?,注意: have to在否定句中, 直接在have to前面加dont, 在一般疑问句中, 在主语前面加助动词do, 并且有人称，数和时态的变化。,肯定祈使句 Sit down. Come in. Eat at home. Lets go home.,否定祈使句 Dont sit down. Dont come in. Dont eat at home. Dont talk in class.,Grammar,祈使句用来表示请求、命令、叮嘱、号召或者劝告等, 主语常是第二人称you,也就是听话者,因而you常省去。祈使句的开头是动词原形。句首或句末加上please，若在句末加please，之前要用逗号隔开。,祈使句的否定形式多以do not (常缩写成dont) 开头, 再加上动词原形。,1. Sit down. 2. Come in. 3. Eat at home.,Dont sit down.,Dont come in.,Dont eat at home.,把下列祈使句改成否定句,Practice:,4. Listen to music outside. 5. Do your homework at school.,Dont listen to music outside.,Dont do your homework at school.,1. late, dont, for school, arrive 2. music, listen to, in the classroom, dont 3. eat, cant, in the classroom, we,Dont arrive late for school.,Dont listen to music in the classroom.,We cant eat in the classroom.,Form sentences. 组句,Dont smoke. No smoking!,Dont take photos. No photos!,Please turn right!,Do you know these?,Dont park here. No parking.,Dont turn left.,Dont talk loudly!,Dont talk! No talking!,Library rules 1. Dont talk. 2. _ 3. _ _ 4. _ _,Dont eat.,Write the rules for the school library.,3a,Dont listen to music.,Dont take photos.,Use the words to make questions about the rules. Then write answers according to your school.,3b,1. Be quite? Q: Does she have to be quite in the library? (she/have to/in the library) A: Yes, she does. 2. Eat? Q: _ (he/ have to/ in the dining hall)? A: _,Does he have to eat in the dining hall?,No, he doesnt. He can also eat outside.,3. Listen to music? Q: _ (we/ can/ in the hallways)? A: _ 4. Wear a hat? Q: _ (we/ can/ in the classroom)? A: _,Can we listen to music in the hallways?,Can we wear a hat in the classroom?,No, we cant.,No, we cant.,At my dream school, we dont have to come to school every day. We ,The best school rules 1. We can eat in class. 2. We dont have to come to school every day. 3. 4.,Groupwork,用所给单词的适当形式填空。 1. Dont _(listen) to music in the library. 2. Do we have to _(clean) the room every day? 3. You cant _(wear) sunglasses in the classroom. 4. Please _(arrive) at school on time (准时). 5. John is often late for _ (class).,class,listen,clean,wear,arrive,将下面的句子改为祈使句，每空一词。 1. You can come in. _ _, please. 2. I can help you. _ me _ you. 3. You cant eat in class. _ _ in class. 4. You cant be late for school. _ _ lat