七年级英语下册第四单元课件Section_A_3a-3c.ppt

1、,Unit 4 Dont eat in class.,SectionA grammer focus3c,Do we have to wear a uniform?,Yes, we do.,Pair work,Ask and answer questions about the rules at your school.,情态动词can的用法 1) 表示能力 “会, 能” Canyouplaytheguitar? 你会弹吉它吗？ JudycanspeakChinese 朱蒂会说中文。 Icandanceandsing. 我能唱歌又能跳舞。,2) 表示允许、许可, “可以”、“能” Canthes

2、tudentsruninthehallways? 学生们可以在走廊上跑吗？ Wecaneatoutside. 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。,肯定祈使句 Sit down. Come in. Eat at home.,否定祈使句 Dont sit down. Dont come in. Dont eat at home.,Grammar,祈使句是用来表示请求、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

3、词原形。可在句首或句末加上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donot (常缩写成dont) 开头, 再加上动词原形。,1. 肯定祈使句的常见句型结构： Do型：动词原形+宾语+其他. 如： Open the door, please. Be型：Be+表语. 如：Be a good boy! Let型：Let+宾语+动词原形+其他. (或：Lets+动词原形+其他.) 如： Let me help you. Lets play tennis.,2. 否定祈使句的常见句型结构： Do型和Be型的否定式：Dont+动词 原形 / be+其他. 如：Don

4、t forget me. Dont be late. Let型的否定式：Dont+let+宾语+动词原形+其他. (或：Lets+not+动词原形+其他.) 如：Dont let him go back. Lets not go swimming. 警示语：No+名词 / 动词-ing形式. 如： No talking.,I _a uniform every day.,They _wear a uniform every day.,Yes,_.,Look and say.,Do you have to wear a uniform every day?,have to,No,_.,have t

5、o wear,I do,I dont,I _do homework every day.,have to,I _ on weekends.,have to clean my bedroom,We have to. We have to arrive at school on time. We have to do homework every day. We have to clean the classroom every day. We have to keep the classroom clean. We have to study hard at all lessons.,What

6、do you have to do at school?,Group work,- Do you have toin the school? - Yes, we do. / No, we dont.,wear school uniforms every day clean the classrooms every day do morning exercises every day do homework every day have classes from Monday to Saturday wear school badge (校徽) every day arrive at schoo

7、l before 7:00am listening to English every day,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 listen to music !,in the classroom,Dont eat!,Dont fight!,Dont run in the hallways.,What are the rules in the libra

8、ry Think as many as you can.,Dont talk in the library! No talking!,Dont talk loudly!,Practice,Can we ? Yes, we can. No, we cant.,eat in class listen to music outside wear hats in school fight in class speak loudly in the library,Library rules 1. Dont talk. 2. _ 3. _ _ 4. _ _,Dont eat.,Write the rule

9、s 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

10、 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 c

11、ant.,No, we cant.,What time does the school begin in the morning? When do you have to arrive at school in the morning? As students, what do you have to do in the school?,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

12、 come to school every day. 3. 4.,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. _ _ late for school. 5. You cant take photos here. _ photos