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、短信提醒一、不同身份
1. 表示主从句的动作同时发生或几乎同时发生时,这类连词(组)有:when, while, as soon as。
例如:When I felt hungry, my friend gave me a hamburger. While I was working, my mother called me. Xiaoming let me know as soon as he bought the tickets.
2. 表示主从句的动作先后发生时,这类连词有:before, after。
例如:The thief had run away before the police arrived. After you finish the task, I will send you a present.