高二英语同步课程
《完形填空之词语辨析》麻雪玲
点击试听好老师授课
老师传授典型题详细办法
教学生举一反三
一题多解、一题巧解
错题本
错题追踪复习
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
网络答疑
课程互动性强
在线互动问答
数理化英快速答疑
课后练习
经典例题课后练习
老师针对课堂中的经典例题
为学生推送同类型题，掌握解题方法
While he was eating, I asked him to lend me $ 2.
当他正在吃饭时，我请他借给我2美元。
when=at that time 当……的时候，其动作可以是延续性动作，也可以是瞬间的动作。
e.g.When I came in, he was reading.
When I was a child, I liked soccer very much.
while=during the time that… 在……期间，与其连用的动作通常是延续性的动作，不与瞬间的动词连用(其引导的从句通常用过去进行时)。
While her children were doing their homework, she was doing some housework.
当她的孩子们在做作业时，她在做家务活。
While the students were reading the new words, the teacher walked around in the classroom.
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