教学内容分析
The teaching materials of this period contain two parts.The first part is the reading passage on Page 22 titled HIV/AIDS：Are You at Risk? which is about what is HIV/AIDS，how it is contacted and how to protect oneself from getting the disease.The second part is the writing task on Page 24，which asks the students to write a letter to Li Xiaolei to give her s
ome advice on her problems.
三维目标设计
Knowledge and skills
1．To enable the students to know something about what is HIV/AIDS，how it is contacted and how to protect oneself from getting the disease.
2．To get the students to learn the following useful new words and structures：judgment(看法；判决；判断)，awkward(局促不安的；笨拙的)，It is/was...that/who...，be likely to.
3．To help the students learn how to write a letter giving advice.
4．To foster the students' ability in skimming and looking up information in reference books and improve the students' reading ability.
