内容:<br>答:<br>when 与while 用法解析<br>连接词when与while是一对常与过去进行时合作的twins。但正如世界上没有两片完全相同的树叶一样,when与while在有着某些相似之处的同时,彼此也各有一些区别于对方的截然不同的“独特个性”。Do you want to know the differences between them?请看——<br>when 解析版<br>[引导时间状语从句]具体地说,它有以下几种含义:<br>1.表明一个动作发生的时候,另一个动作正在进行之中。例如:<br>When the teacher came into the classroom ,we were reading English.当老师走进教室时,我们正在读英语。<br>2.表明当某一动作正在进行时,另一动作发生了。如:<br>When Kate was flying a kite,she found a wallet lying on the ground.凯特正在放风筝时,她发现地上有个钱包。<br>[特别提示]当when从句放在主句之后时,它更强调某一动作的突然性,此时的when相当于and then,and suddenly,just at that time。如;<br>1.We were watching TV when the telephone rang.(=We were watching TV and suddenly the telephone rang.)我们正在看电视,(突然)电话铃响了。<br>试比较:When we were watching TV, the telephone rang.我们正在看电视时,电话铃响了。<br>2.The boys were playing football when it began to rain.男孩子们正在踢球时,(不料)开始下雨了。<br>3.I was taking a walk when I came across Lily.我正在散步时,(没想到)遇见了莉莉。<br>特别是主句中有just,或when从句中有suddenly时,这种突然性更为明显、强烈。例如:<br>4.He was just falling asleep when he heard someone s
Doing the washing up,Connie was planning her holiday.康妮在洗碗的时刻盘算着怎样度假。The students came into the classroom .学生们又说又笑地走进了教室。As she saw me,she came over. 她看到我时,笑容可掬地走过来。 可表示 行为在主要动作之前或之后。 Antonio remembered sending his mother an email three times last month. 安东尼记得上个月给他母亲发了三次电子邮件.(在前) Mr. Lee went out behind him. 李先生出去后将门随手关上。(在后) 2. v.- -g ing 形式的完成式 v.-ing 形式的完成式由“having + v.-ed 形式”构成,表示动作发生在谓语动词表示的动作之前 ,而时态的表达主要靠谓语动词来加以确定。 I could not recall having heard anyone say that before。我不记得以前听过谁说这样的话。 Having finished his homework,he went to bed. 做完了作业,他去睡觉了。(先“做作业”,后“去睡觉”) He doesn’t remember that.他忘记了曾经答应过我那件事。 She regretted .她很后悔没看这部电影。 I remember you speak on that subject.我记得曾经听见你谈过这个问题。 That weekend,for a while,I went to the library to borrow some new novels. 那个周末,我看了一会儿电视,便去了图书馆借了几本新小说。 ,he has made up his mind to work harder from now on. 他认识到考试失败的原因后,下决心从现在开始要更加努力地学习。 The decision ,the next problem was how to make a good plan. 决定已作出,下一个问题是如何制订一个好计划了。 3. v.- - ing 形式的被动式 -ing形式的一般时的被动式由“being + v.-ed形式”构成,表示主语是v.-ing形式的动作的承受者。