Dear Dr. Know, ____ you help me? I’m not happy because there are too many rules at home. Every morning, I ____ get up at six o’clock. At school, I _____ wear a school uniform, and I ______ keep my hair short. After school, I ____ play with my friends or watch TV because I ______ do my homework. I ___ relax on weekends either because I ___ learn to play the piano. I never have fun, what ___ I do? Zhao Pei 3a Complete Zhao Pei’s letters to Dr. Know using have to / must, can / can’t.

1. 明确 must, have to, can, can’t 的用法： must 强调主观上的需要； have to 强调客观上 的需要。 can 可以； can’t 不可以。 2. 先通读全文，理解短文大意。 3. 理解每句话的意思，根据语境确定用哪一个 情态动词。 4. 寻找句子中有标志性的单词。如看到 or ， either 等词，可知本句应是否定句。 5. 最后，再通读一遍短文，看有没有错误或不 通顺的地方。

Dear Dr. Know, ____ you help me? I’m not happy because there are too many rules at home. Every morning, I ____ get up at six o’clock. At school, I _______ wear a school uniform, and I ______ keep my hair short. After school, I ____ play with my friends or watch TV because I ____ do my homework. I ____ relax on weekends either because I _____ learn to play the piano. I never have fun, what ___ I do? Zhao Pei have to Can have tomust Check the answers. must can’t must can

1. Is Zhao Pei happy? Why or why not? 2. When does she have to get up every morning? 3. Can she play with her friends after school? Why? No, she isn’t. Because she has many rules in her family. She has to get up at six o’clock. No, she can’t. Because she has to do her homework.

4. Can she watch TV on school nights? 5. What does she have to do on weekends? 6. Does she have any fun? No, she can’t. She has to learn to play the piano. No, she doesn’t.

Can you list the rules of Zhao Pei’s family? 1. Get up at 6 o’clock. 2. Wear a school uniform, keep my hair short. 3. Can’t play with friends after school. 4. Can’t watch TV after school. 5. Do homework after school. 6. Learn the piano.

Things I have to doThings I can’t do I can’t go out on school nights. I must do the homework first after school. I can’t watch TV before I practice the piano. I have to wear the uniform at school. I have to keep my hair short. I can’t see friends on school days. I must get up before 6:30 and practice English. I can’t be noisy or eat in class.

Write a letter to Dr. Know. Tell him about all the rules and how you feel about them. 1. 先对 3b 中自己所写的在校及在家的规则进行整理，将在家里的 规则及在学校里的规则分别放在一起。 2. 先将在家里的规则写成一段连贯的文字，再将在学校里的规则 写成一段连贯文字，表明自己对这些规则的感受。 3. 注意开头可写 “Can you help me? ” 来表明自己求助的目的。并 注意写清自己求助的原因。 4. 按书信的写作格式，写好开头及结尾。并再将整个信件再通读 一遍 。

Dear Dr. Know, _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ _________________________________________ ________________ Li Yan Can you help me? I’m not happy because there’re too many rules in my life. I must get up before 6:30 and practice English every morning. I can’t go out on school nights. I can’t meet friends on school days. I must do my homework first after school. I can’t watch TV before I practice the piano. I have to wear the school uniform at school. I have to keep my hair short. I can’t be noisy or eat in class. What can I do? One possible version

Dear Dr. know, There are too many rules in my life! At home, I have to help my mom and dad do the dishes every day. And I have to clean my room on Saturdays. I can’t go out with my friends on weekends. At school, we can’t eat in class. We have to wear a school uniform. And we can’t be noisy in the hallways. How can I relax with so many rules? What should I do? Ken Li

1 Fill in the blanks with the words in the box. arrive late, listen to, be noisy, follow the rules, be strict

My name is Timmy the Mouse. I must get up early at 6:30 a.m. every morning. Then I have to go to the kitchen to get food for Grandpa. I never _________ to the kitchen because I have to get there before the cat gets up. My grandpa always tells me I can’t _______. I _______ him because I don’t want the cat to get me! My grandpa ________ with me, but I think it’s best to ______________. listen to isn't strict be noisy arrive late follow the rules

My name’s Timmy the Mouse. I must… get up, 6:30 go to the kitchen arrive late, get up grandpa, be noisy strict with, follow listen to, get me

2 Use can/can’t, have to/must and don’t to write about the rules at school. Write two sentences for each rule. 1.arrive late/ class __________________________________ ___________________ 2. listen/ teacher __________________________________ ___________________ Don’t arrive late for class. We can’t arrive late for class. We must/ have to listen to our teachers at school.

3. be noisy/ library ______________________________ 4. speak English/ English class______________________________ 5. eat/ dining hall ______________________________ We must/can speak English in the English class. We can’t be noisy in the library. Don’t be noisy in the library. We must/can eat in the dining hall.

1. wear uniforms, at school __________________________________ 2. clean my room, every Sunday _________________________________ We must wear uniforms at school. I must clean my room every Sunday. Make more sentences.

3. go to a movie, on school nights __________________________________ 4. leave dirty dishes, after dinner? __________________________________ __________________________________ 5. drive, before, eighteen __________________________________ I can’t leave dirty dishes in the kitchen after dinner. Don’t go to a movie on school nights. You can’t drive before you’re eighteen.

1.keep + 名词 / 代词 + 形容词 意为 “ 保 持处于 … 状态 ” We must keep our classroom clean every day. 我们必须每天保持教室 干净。 How can you keep the fruit fresh? 你是怎样保持水果新鲜的？

2. learn 学习；学会 (1) learn + 事物 Ms. Wu helps me to learn English on weekends. 吴老师周末帮我学习英语。

1. 我不开心因为有太多的规则。 I’m not _____ because there’re ___ ____ rules. 2. 在学校里我们必须保持头发很短。 We ____ ____ our hair ____ at school. 3. 放学后，我不能看电视或打篮球。 I ____ watch TV __ play basketball ____ school. after happy can’t or too many 填上正确的单词，补全句子。 must keep short

4. 在星期六我也不能休息，因为我必须 要学习钢琴。 I ____ ____ on Saturday _____ because I ____ __ ____ __ play the piano. 5. 老师对我们很严格。 Our teachers ___ _____ ____ us. have to learn to can’t relax are strict with either