教学目标：
知识目标：Learn the n ew words and main sentences:
name , nice meet, your, his, her. Nice to meet you!
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 y ourself and greet people
难点：Introduce yourself and greet people
关键：greet people的相关对话练习
