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You'd better take those impudent words back.你最好收回那些放肆的话。
混淆短语：call back：回电话
You'd better call your wife back immediately otherwise she will be very worried.你最好立刻给你太太回电，否则她会很担心的。
8.take care of：照顾
My mother asked me to take care of my litlle brother while she was way.妈妈要我在她出门的时候照顾好弟弟。
替换短语：care for：照顾
My mother asked me to care for my litlle brother while she was way.妈妈要我在她出门的时候照顾好弟弟。
9.take great touble to：不辞劳苦地做
I appreciate that you took great trouble to come to his backward place.我很感激你不辞辛劳来到这穷乡僻壤。
混淆短语：in trouble：有麻烦
If you are in trouble, please call me.如果你有麻烦，请打我电话。
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