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make yourself at home 别拘束
(1) make yourself at home 别拘束(主人对客人说的委婉语)
-- Good evening, Jim.
-- Good evening, Mary. Come in and make yourself at home.
(2) (all) by oneself 独自(没有别人帮助)
You can't possibly do it all by yourself.
(3) enjoy oneself = have a good time 玩得高兴
Please enjoy yourself while you're spending your holiday in Hawaii.
(4) for oneself 亲自; 为自己
The student wants to think it for himself.
One should not live for oneself alone.
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