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The old man treated the boy as his son.
treat请客;款待
Whose turn is it to treat next?
3.have trouble (in) doing sth.
= have problems (in) doing sth.
= have difficulties (in) doing sth.
The little child has trouble in dressing himself.
be in trouble 处于困境中
It seems he is in trouble.
trouble sb. to do sth.
What is troubling your mother?
4.believe后可跟名词,表示“相信”;后接从句或复合宾语时,表示“认为;料想;相信”