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冲，奔跑______________热线________________警察，巡警_____________________
自学指导二：按下列要求学习1a 。
听1a录音并跟读，模仿语音语调，了解对话内容。
自读1a并翻译，讨论自行解决自己不会的地方。
再读1a，找出重难点，教师讲解。
找出对话中含有if引导的条件状语从句，讲解其用法。
完成1a.1c,并核对答案。
自学指导三：按下列要求学习2a 。
自读2a并翻译，讨论自行解决自己不会的地方。
再读2a，找出疑难点，讲解疑难点。理解下列短语。
slow down______________避免做某事______________________
根据2a,填写事故报告单，完成2b.
当堂训练：一、词汇。
There are too many p________on the bus.It’s very crowed.
He died in a traffic accident.His d______made his family feel very sad.
Be careful.Try to a______making such a silly mistake.
I looked for my lost keys everywhere yesterday,but I couldn’t find them a________.
It’s snowing so heavy.It’s i_______for me br there before eight.
When ypu say something,you should avoid _______(hurt) the others.
As he saw a little boy playing in the street ,he ______(slow)down at once.
The policeman _____(rush) into the fire and saved the boy.
二．单项选择。
( )1.______you get up late,you may miss the early bus.
A.If B.While C.After D.When
( )2.It’s bad ______about waste paper everywhere,we must avoid _____that.
A.to,throw B.to ,doing C.throwing,to do D.throwing,doing
( )3._______hitting the car,the boyon the bicycle ran into a big tree.
A.Avoid B.Avoiding C.To avoid D.Avoided
( )4.I don’t know if it ______tomorrow.If it _____,we will go to the Great wall.
A.will rain,doesn’t rain B.will rain,won’t rain C.rains,won’t rain D.rains,doesn’t rain