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、短信提醒高中物理培训机构
→Tom said to me that his brother was doing his homework.
2. 人称代词、指示代词、时间状语、地点状语等等的变化： 根据意义进行相应的变化，例如：
She asked Jack，“Where have you been?”
→She asked Jack where he had been.
He said，“These books are mine.”
→He said that those books were his.
dropsbaline给某人写信（通常指写短信〉
formaladj.正式的；正规的
errorn.错误；差错
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