Unit 2 Beach flags Discovery 课件 2025-2026学年沪教版（五四学制） 英语六年级下册

Beach flags Unit 2 Rules around us 。 1 3 Where can we find beach flags? What do we use beach flags to do? 4 How many kinds of beach flags does the writer (作者) talk about? What are they? a red flag a yellow flag a pair of black and white flags a red over yellow flag What does this flag mean? What kinds of danger does a red flag possibly mean? surf /sɜːf/ v./n. 冲浪 What does this flag mean? What kinds of danger does a yellow flag possibly mean? What does this flag mean? Who can go to a surfing area? surfer n. 冲浪运动员 What does this flag mean? Who can go to this area? How about people who are not good at swimming? Can they swim here? What do these flags mean? What kind of flag What the flag means What we can do or what we mustn’t do a red flag very dangerous mustn’t swim a yellow flag dangerous somewhere shouldn’t swim or sail in the sea alone a pair of black and white flags a surfing area mustn’t swim a red over yellow flag a safe swimming area can swim Which flag shows that we can go swimming? Why? a yellow flag a red over yellow flag a yellow light When can you see a yellow light on? 11 Why do people use beach flags of different colours to convey (传达) information on the beach? Because different colours have different meanings. Usually red means “stop” or “danger”, and yellow means “Be careful.” It’s like the traffic lights. We mustn’t cross the roads when the traffic lights turn red. And we had better wait when the yellow light is on. 12 Why do different countries use the same beach flags to tell us the same safety rules? Because if I can’t read the words of that country, I can still get the information from the colour of the flag. So I can know what I can do and what I mustn’t do on the beach. What do these beach flags probably (可能) mean? Why? Do you think we can go swimming when we see these beach flags? It is a safe area and it’s safe to go swimming. Danger! No swimming here! The beach is closed because of safety problems. There is something dangerous (usually some dangerous fish) in the sea. 14 Why do people need rules on the beach? Because rules tell people what to do if there’s something wrong, like big waves or bad weather, so they can stay safe. Because rules help everyone know what they can and can’t do, so they don’t get into trouble. Because rules can help create a peaceful and safe environment so that everyone can have fun at the beach. $