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Step 1 Free talk.
Safety is very important in our life. If we meet an accident, what should we do ?
Step 2 Review the words and pharases.
1. Talk about accident:（1） kinds of accident:
（2）How is the accident?
（3）What should we do?
2. Say out the words correcly,quickly.
根据中文提示，默写单词。
1.有用的 ______________(v.) ____________(adj.)____________( 反义词)
2.危险的_____________(adj.) _____________(n.) ____________(反义词)__________(n.)
3.勇敢的 (adj.)
4.破碎的 ___ (adj) ____ (v.) (过去式)
5.保持 (v.) (过去式)
6.医学的 (adj.) (n.)
7.有害的 (adj.) (n.)
8.不和……接触的 (adj.)
9.使落下 (v.) (过去式)
10.警告 (v.) 11.盖上 (v.)
12.想象 (v.) 13.麻烦 _____________(n.)
3. Do the exs:
词形变换：根据句意，用括号中所给单词的正确形式填空。
It is safe to move when the ground stop _______________(shake).
Leave the building as ________________(quick) as you can.
You must be _____________(care) of the fire when you use it.
The police ____________(warn) the drivers to obey the traffic rules last night.
Look, your pet dog is __________(lie) on the sofa.
He has some trouble _____________(speak) to others. Let’s help him.
You should give up smoking because it is ____________(harm) to your health.
The class is about giving someone basic _____________(medicine) help.
Don’t lift __________(he) up, his leg is badly hurt.