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4. recognize vt. 认识，辨认
e.g.①She was so changed that I hardly recognized her. 她变得我几乎认不出来了。
②Harry recognized me in the crowd. 亨利在人群中认出了我。
5. Where have you been all these years? 这些年你上哪儿去了?
e.g. The teacher asked Jane, “You didn’t come to school, last week, where have you been?”
老师问Jane，“你上星期没来学校，去哪儿了?”
6. That’s because of hard work. 那是因为劳累。
e.g.①He couldn’t go further. That’s because of his wounded leg.
他不能再往前走了，因为他的腿受了伤。
②He cried because of the pain in his arm = He cried because he had a pain in his arm.
他因为胳膊疼而哭了。
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