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教学难点：含有must, mustn’t 的句型的准确表达及正确运用。
教学方法：情景教学法
教学过程：
Step 1 Lead-in
1. Greetings: Date/Weather.
2. PK time.
Talk about the rules on the road and at home. Boys use the sentence: We must….. Girls use the sentence: We mustn’t…
Step 2 Presentation
Read and circle.
1. T: What rules do they need to observe? Please read and circle.
2. Check the answers.
Picture1:
T: The first picture, which pair wants to try?
S1: Can I watch TV?
S2: No, you can’t . You must go to bed.
T: Can you watch TV every day?
S: No, we can’t . We can watch TV at weekends.
3. Discuss the differences between must and can.
(must 表示说话人“不许”和“禁止”某人做某事，有很强的劝告语气。Can表示有能力或有权利做某事。)
Step 3 Writing
T: When we’re at home, we should follow some rules. When we go to school, in order to keep safe on the road, we should follow the traffic rules. When we are at school, we should also follow the classroom rules, right?
1. Match and say:
1) T: What are they doing?
S: They’re talking to each other.
T: What do you want to say to them?
S: You must keep quiet. / You mustn’t talk to each other. / You must listen to the teacher.
T: How about other students? Which class rules are the students breaking? Write the numbers in the circles in pairs.
3) Check and discussion.
2. Think and write.
1) T: Liu Tao wants to make a poster about his classroom rules. Let’s help him.