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places to find them. 1. Give students a little quiz. T: Here are eight more forbidden signs. Do you know the meaning of them? Now I will send you a little quiz. Please choose the meanings of those signs. You can take out your pad and finish the quiz 2. Check the answer. Teach the key sentence structure: 39。 Whiletask activities 20 minutes 1. Do a quiz. Look at some signs and choose their meanings. 2. Practise the key sentence pattern 39。 To teach the forbidden pattern: 39。 plus verb ING form to show forbidden meaning. To lead in the meaning of 39。ll show you more signs. What does this sign mean? T: We can use 39。No 39。 activity Teacher39。 Difficulties: Assess and ment。 to obligation and prohibition。 5. Assess and ment: Key points: 1. Use 39。 3. Use imperatives to express prohibition。 U7 Rules around us (period 1) Objectives: After this period, students are going to: 1. Interpret signs。 2. Use modal verbs to express obligation and prohibition。 4. Be aware of the importance of signs。we must (not)39。 2. Be aware of the importance of signs。 Steps Students39。s activity Purpose Pretask activities 8 minutes 1. Free talk. 1. Show students a sign. Have students talk about signs freely. Q: What are these? What do signs mean? Where can you find signs? Where can you find this sign? Do you think these three signs tell the same thing as these three signs? What do these three signs tell us? T: These three signs give us instructions, and they tell us where to go, where we can