Unit 4 Road safety (1) Free talkWhat are they?Do you know?Look and read.traffic lightsred mangreen man绿灯红灯交通灯lightLook and read.a pavementa zebra crossing斑马线人行道a road马路roadzebra crossing pavementLet’s read.Read the test and the new words.Story time Road safety There are many busy roads in the city. How can you cross them safely? First, you must look for a zebra crossing. Then, you must look for a zebra crossing. Then, you must look at the traffic lights and wait for the green man.Can you see the red man? You mustn’t cross the road now.Look! Here’s the green man.You can cross the road now.safety安全穿过crosssafely安全地必须mustStory time Sometimes, you cannot find a zebra crossing near you. To keep safe, you can wait on the pavement and look out for cars and bikes. You must first look left, then right and then left again. You can also cross the road with other people. Then the drivers can see you easily.安全safe当心look out forStory time Some children run or play football on the road. This is not safe. You must not play on the road because there are many cars and bikes. Follow the rules and stay safe on the road.必须follow规则rule保持stayLet’s play.roadsafetyfollowpavementlightMissing Game.saferulecrossruleLet’s learn. must 和 mustn’t 用法： must 是情态动词，表示必要性“必需” ,“ 一定” 。 mustn‘t 是否定形式，表禁止“不要”，“禁止”。 eg. We must wait for the traffic lights. You mustn’t cross when it’s the red man.Fill in the blanks. 选择 must 和 mustn’t 填空。1. We ________ look out for cars and bikes. 2. You ___________ play on the road.3. You __________ first look left, then right and then left again. 4. You ___________ smoke in the library. must mustn’t mustn’t mustLet’s...
