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To learn about adverbial clauses of conditions.
To cultivate the consciousness of traffic safety.
Learning Objectives:
（谈论交通安全常识）
（学习条件状语从句）
（培养遵守交通法规的意识）
Guess a riddle.(猜谜)
It is used by most people everywhere.
It was invented(发明) by Delaisse(德莱斯).
It is a kind of vehicle.
It has two wheels(轮子).
People can use it to do exercise.
It doesn’t cause air pollution.
Task 1
Task 2
Learn the new words.
helmet
n. 头盔
careless adj.
careful adj.
care n.
反
义
词
(不小心的，不仔细的)
care v.
ask about