I. Teaching contents：Learning about language
II. Teaching aims：
1).To learn some useful words and expressions
2).To learn some useful structures
3)Grasp the usage of such important expressions :
as a result (of sth); long; turn around; suggest; powerful; control; go down; look up.
4)Master the sentence pattern:
as引导的状语从句
no… no…
protect … from …保护……免受……（危害）
