9B Unit One Period Ten (教案)
Teaching aims：
1. To go over the words and phrases.
2. To go over the grammar items.
Teaching importance：
1.the words and phrases.
2 the grammar
Teaching difficulties：
1.To compare the usage of objecct clauses introduced by "if"with the usage of adverbial clauses introduced by "if"
2.Tense of objecct clauses introduced by "that""if"or "whether"
Teaching aids:
Preparation and test paper.
Teaching steps:
Step One. 
Free talk and check the preparation out。
1. Work in groups of four to check the phrases. (四人小组核对答案，教师巡视帮忙)
2. Let the Ss ask some questions.
3. Solve the problems together.
4. Ask the students to read them out and pay attention to the pronuciations..
预习作业
把下列短语译成英语
1.我们需要做的一切_______________
2休息一下 _______________
3.检查你的工作 ________________
4帮助我使仙蒂镇静下来 _____________________
5 起飞_____________  
6 太紧张以至不能放松____________
7. 担心一切____________
8 坐在窗子旁边_____________
9空气罐_______________
10 干制食品 _______________