1、=【 ;精品教育资源文库 】 = Unit4 Don t eat in class. 第 二 课时 Section A (Grammar Focus-3c ) 学习目标: 1、重 点单词 rule 规则 2、重点词组 wear a hat 戴帽子 wear a uniform 穿校服 be quiet 保持安静 3、重点句式 ( 1) Don t run in the hallways. 不要在走廊里跑。 ( 2) -What are the rules? 规则是什么? -We must be on time for class. 我 们必须准时上课。 ( 3) -Can we eat in
2、the classroom? 我们能在教室里吃东西吗? -No, we can t, but we can eat in the dining hall. 不能,但是我们可以在餐厅里吃东西。 ( 4) -Does he have to wear a uniform at school? 他在学校必须穿校服吗? -Yes, he does./ No, he doesn t. 是的。 / 不,不是。 ( 5) -What do you have to do? 你必须做什么? -We have to be quiet in the library. 我们在图书馆必须保持安静。 重点难点: 1. 祈使
3、句的使用 2. 情态动词的使用 导学设计: 1. Don t run in the hallways. 不要在走廊里跑。 【归纳】 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。可在句首或句末加上 please,若在句末加 please,之前要用逗号 隔开。祈使句有肯定祈使句与否定祈使句两种。祈使句的否定形式多以 do not (常缩写成 dont) 开头 , 再加上 。 Listen to music outside. Dont listen to music outs ide.
4、( 1) 肯定祈使句的常见句型结构: =【 ;精品教育资源文库 】 = 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. 又如: 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: Dont forget me. 又如: Dont be late. Let
5、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. 又如: Lets no t go swimming. 警示语: No+名词 / 动词 -ing 形式 . 如: No talking. 2.We must be on time for class.我们必须准时上课。 on time 意为“ ”。含 time 的短语还有 in time 意为“及时”, at times 意为“有时”, from time to time 意为“不时,时常”。 He always gets to th
6、e office on time. 他总是准时到达办公室。 They sent the boy to the hospital in time.他们及时送孩子去了医院 。 3. We have to be quiet in the library. 我们在图书馆必须保持安静。 have to 意为“必须,不得不”,后接动词原形 ,表示 条件下“必须做某事”。 have to 有第三人称单数形式,即 has to,变疑问句和否定句要用助动词 do/does。 must 意为“必须”表示主观条件下“不得不”。例如: It s getting dark. I have to leave now.天变
7、得越来越黑了,我得走了。 You must follow the rules in the school.你一定要遵守学校的纪律。 知识巩固 : . 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 _
8、 (class). . 将下面的句子改为祈使句,每空一词。 =【 ;精品教育资源文库 】 = 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 here. . 根据句意,选用 can, cant, must, have to 或 has to 填空。 1 A
9、lice _ do her homework, so she goes to ask her teacher for help. 2 You dont _ clean your room today. 3 _ Jim speak English? No, he cant. 4 _ I help him with Chinese? Yes, you must. 5 What does Lily _ do in the evening? She _ do her homework. . 单项选择。 1 _ listen to music in the classroom. A Not B No C
10、 Dont 2 Tom, please _ the classroom now. A clean B to clean C cleans 3 Lets _ on time for classes. A be B be not C are 4 She has to _ her homework every night. A does B do C doing 5 Sorry, you _ play basketball in the classroom. A cant B dont C dont have to 参考答案 =【 ;精品教育资源文库 】 = 导学 设计 1. 动词原形 2. 准时 3. 客观 知识巩固 . 1. listen 2. clean 3. wear 4. arrive 5. class . 1. Come in 2. Let, help 3. Don t, eat 4. Don t be 5. No . 1. can t 2. have to 3. Can 4. Must 5. have to, has to .1-5CAABA