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3. choke vi./vt, cause (sb.) to stop breathing by squeezing or blocking the windpipe e. g. He choked when he ate his food too quickly. The smoke almost choked me. 4. prevent yr. stop or hinder sb./sth. e. g. Bad weather prevented me (from) starting. Your prompt action prevented a serious accident. 5. catch fire., begin to burn be on fire. be burning e. g. The house caught fire last night. The house is on fire. 6. electric adj. using electrical power electrical adj. of /concerned with electricity e. g. I want to buy an electric fan. This machine has an electrical fault. (Explain the language points to students and help them to master the important words and phrases. Write them on the blackboard. ) Step Ⅱ Speaking T: Just now we've discussed what we should do when some accidents happen. But you know certain things at home can be dangerous. So we must know what we should do and shouldn't do. Please look at the screen. Here are some dos and don'ts. Work in pairs to tell each other what you should do and shouldn't do. The useful expressions below may help you. (Show the following on the screen. ) Dos l. Make sure that electric wires are safe and that children can't reach them. 2. If a pan of oil catches fire, turn off the gas and cover the pan quickly. 3. Make sure that everyone in your family knows how to call 110. 4. Learn more about first aid. Don'ts 1. Don't put poisons into other containers, for example empty bottles. 2. Never leave small things on the floor or table which a baby can put in its mouth. 3. Don't play with electrical equipment. 4. Never use ladders on a wet floor. Useful expressions You should always… You should not… You ought to/should… You should never… You must… You must never… You have to… Please don't … Make sure that… (A moment later, ask some students to act out their dialogues. ) (责任编辑：admin) |