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、短信提醒改写为正常语序为,Man did not know what heat is until the early years of the 19th. 现在将not提前,后面就不能再用否定了,否则意思就变了。
3) 以否定词开头作部分倒装
如 Not only…but also, Hardly/Scarcely…when, No sooner… than等,要倒装。例如:
Not only did he refuse the gift, he also severely criticized the sender. 他没有收下礼物,还狠狠批评了送礼的人。
Hardly had she gone out when a student came to visit her. 她刚出门,就有个学生来访。
No sooner had she gone out than a student came to visit her. 她刚出门,就有个学生来访。