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(7) With the security guard near the gate no bad character could do any thing illegal.
5.“with 宾语＋副词虚词”，如：
(8) You cannot leave the machine there with electric power on.
(9) How can you lock the door with your guests in?
上面五种“with”结构的副词功能，相当普遍，尤其是在科技英语中。
接着谈“with”结构的形容词功能，有下列五种：
一、“with 宾语 现在分词或短语”，如：
(10) The body with a constant force acting on it. moves at constant pace.
(11) Can you see the huge box with a long handle attaching to it ?
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