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(4) would rather sb did sth 宁愿某人现在或将来做某事
例： Who would you rather went with you?
你宁愿谁和你一起去?
11. before 句型
(1) before sb can/ could … 某人还没来得及……
例：Before I could get in a word ，he had measured me.
我还没来得及插话，他就给我量好了尺寸。
(2) It will be 时间 before 还有多长时间……
例：It will be 4 years before he graduates.
他还有四年时间变毕业了。
(3) had done some time before (才……)
例：We had sailed four days and four nights before we saw land.
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