四、Read and finish. 你应该如何安全地过马路呢？请读一读，完成下面的任务。
How can you cross the road safely?
There are many busy roads in the city. How can you cross them safely?
First, you must find the zebra crossing(斑马线). Then you must look at the traffic lights and go at the green light. When you cross the road, you must pay attention to cars, buses and bikes. Before you cross the road, you should look left first, then right and then left again.
You can also cross the road with other people. The drivers can see you easily.
Some children run or play on the road. This is not safe. You mustn't play on the road. Please cross the road quickly.
任务一：判断下面句子的正(T)误(F)。
()1. When you cross the road, you must pay attention to cars, buses and bikes.
()2. If you cross the road with other people, the drivers can see you easily.
()3. You should cross the road slowly.
任务二：回答下面的问题。
1. Before you cross the road, what should you do?

2. Can you run or play on the road?

任务一：1. T 2. T 3. F
任务二：1. I should look left first, then right and then left again.
2. No, I can't.

五、Think and say. 本单元我们学习了哪些出行方式和交通规则呢？请想一想，并和同学们说一说吧。

出行方式：by bike, by bus, by train, by plane, by ship, on foot, by subway.
交通规则：Stop at a red light. Wait at a yellow light. Go at a green light. Slow down and stop at a yellow light. Don't go at a red light. Look left and right before crossing the road.