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When we arrived home, mother had already prepared dinner for us.
I was preparing for bed when I heard a knock at the door.
Useful expressions： 1.right away at once ; in no time; immediately I will return the book right away. I am getting in touch with him right away. We are about to start right away.
2.end 1) at an end finish; over It seems that the world was at en end. 2) bring… to an end =put an end to… I wonder how I can bring the dispute to an end. =I wonder how I can put an end to the dispute. 3) come to an end The meeting came to an end at midnight. 4) at the end of… At the end of the road there is a shop. 5) by the end of… How many English words have you learned by the end of last term? 6) in the end =at last; finally He will be a scientist in the end.
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