互动封闭仿真课堂
1、智能交互 2、电子板书式视频教学 3、在线互动问答 4、封闭课堂启发式教学方式
随堂测试、知识梳理、易错点揭示、总结启迪智能错题本
听课中的错题能自动加入错题本，课后可方便复习及导出错题本升级服务
在线答疑、课后同类题练习、讲义下载、短信提醒Let me introduce myself to you first.
The chairman introduced the speaker to the audience.
【知识拓展】introduce的名词形式是introduction，意为“介绍”，多作不可数名词，有时候也作可数名词；还可译为“引论；导言；概论”，是可数名词。如：
My next guest needs no introduction (= is already known to everyone).
Before the meeting began I made the necessary introductions.
The introduction in a book tells us what the book is about.
3. approach & touch
【课文原句】Mr Garcia approaches Mrs Smith, touches her shoulder and kisses her on the cheek. (P26)
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