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(1) 结构：It is / It was (过去时间) 被强调部分 that / who (专指人) 其他部分
(2) 用法：除了谓语动词不能强调，句子的每部分均可强调。 Jim met the student in the street last week.
主语 宾语 地点状语 时间状语
强调主语：It was Jim who / that met the student in the street last week.
强调宾语：It was the student whom / that Jim met in the street last week.
强调地点状语：It was in the street that Jim met the student last week.
强调时间状语：It was last week that Jim met the student in the street.
(3) 注意点：
一般疑问句的强调句：
Was it Dr Wang who spoke to you just now?
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