互動封閉仿真課堂
1、智能交互 2、電子板書式視頻教學(xué) 3、在線互動問答 4、封閉課堂啟發(fā)式教學(xué)方式
隨堂測試、知識梳理、易錯點揭示、總結(jié)啟迪智能錯題本
聽課中的錯題能自動加入錯題本,課后可方便復(fù)習(xí)及導(dǎo)出錯題本升級服務(wù)
在線答疑、課后同類題練習(xí)、講義下載、短信提醒重點語法
一、不同身份
1. 表示主從句的動作同時發(fā)生或幾乎同時發(fā)生時,這類連詞(組)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. 表示主從句的動作先后發(fā)生時,這類連詞有:before, after。
例如:The thief had run away before the police arrived. After you finish the task, I will send you a present.
3. 表示主句動作為可持續(xù)性時,即主句謂語動詞為持續(xù)性動詞,這類連詞有:until, since。
例如:I watched TV until my father came back. She has saved money since she got the job.