你說的是表示“...時(shí)”的區(qū)別嗎?
when和while都能表示這個(gè)意思,但是while后面必須用進(jìn)行時(shí)態(tài).
另外,while可以表示“而”表示對(duì)比,這時(shí),while后面不一定要用進(jìn)行時(shí)
如：
He came back when I was watching TV.對(duì)
He came back while I was watching TV.對(duì)
He came back when I went to work.對(duì)
He came back while I went to work.錯(cuò)
表示對(duì)比關(guān)系時(shí)：
He went to bed while I went to work.
He was sleeping while I was working.
換成when也說得過去,但你的老師會(huì)算你錯(cuò),因?yàn)樗嫉木褪悄愕谋鎰e能力.
另外,用while時(shí),其兩邊的句子結(jié)構(gòu)要對(duì)稱.