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13. reason n. 原因;理由
(1) to do sth. You haven't any reason to leave me.
(2) for sth. / doing People must have a reason for saying such things.
(3) 从句;从句用why / for which引导 That is the reason why you should leave.
(4) for reason，为了某种原因He is retiring for reasons of health.
[比较] cause“原因;起因”
the cause of the fire 火灾的起因(引起某种后果的起因)
the reason for being late 迟到的理由(做某件事的理由)
14. role
(1) (戏剧中的) 角色Oliver played (acted) the role / part of Hamlet.
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