教学目标：
知识目标：L earn the ne w words and ma in sentences:
one two three four five six seven eight nine telephone number first last friend China middle
能力目标：Introduce yourself.
情感目标：了解东西方的文化差异，学会礼貌与人交流
重点：Introduce yours elf and greet people
难点：Introduce yourself and greet people
关键：greet people的相关对话练习
