1、知识准备：
A）New words :(试着翻译这些单词）
full_________ organize___________ side___________
sign________ through________ fragile________
B)讨论以下两个问题： 1.Do you know a lot about your family history?
2.Who is the most interesting person in your family?
2、揭示课题：Lesson 54 Show and Tell!
