1多强调“一边 一边”2表示伴随着另一个动作而发生,有因果关系 3表示两个短暂行为同时发生 while:侧重于两个动作同时发生(没有因果关系),多用于这样的短语:一般过去式+while+过去进行式
不期看到天空,见晴空万里丝丝白云。云在空中追逐嬉戏变化多端。像神仙画家信手运笔。这时,你的鼻翼翕动,直觉洁净清爽!纵目四望耳目一新,仿佛雾中透析一览无余。看花吧,山上的花;层递招之,五颜蒙雾,朦胧中花儿舞姿翩翩,搔首弄姿,时而点头哈腰,时而鞠躬敬礼,时而招手致谢,时而訚訚细语,不仅...
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1:I am afraid that I can not get up 我怕我起不来。2::He slipped and fell downstairs.她滑了一跤,从楼梯上摔下来。3:He has hurt himself。他曾经伤害过自己。4:I think that you had better do your homework.我认为你最好做作业。5:let me help you,我来帮你吧 ...
从属连词是用来引导从句的。分为如下几种: A,引导时间状语从句的从属连词有: 1. when There was prolonged applause when he began to speak. 他开始讲话时响起了经久不息的掌声。 2. while We should strike while the iron is hot. 我们要趁热打铁。 3. as As (When) he entered, the hall burst in...