熱心網友

when 表示短動作,除基本用法外, 還表示突然;while 長動作,另外表對比adv。（副詞）At what time:什么時候：When will we leave?我們什么時候離開?conj。（連接詞）At the time that:在…的時候：in the spring, when the snow melts。在春天，當雪融化的時候As soon as:一…就…：I'll call you when I get there。我一到那里就給你打電話Whenever:無論什么時候：When the wind blows, all the doors rattle。只要風一吹，這門就吱嘎作響During the time at which; while:在…期間，當…時：When I was young, I was sick all the time。在我小時候我總是生病Whereas; although:雖然，盡管：She stopped short when she ought to have continued。盡管她應該繼續下去，她卻突然停住了Considering that; if:考慮到，如果：How can he get good grades when he won't study?他不用功的話怎么拿高分呢?pron。（代詞）What or which time:什么時候：Since when has this been going on?從什么時候起事情象這樣?n。（名詞）The time or date:時間或日期：Have they decided the where and when?他們已經定下來地點和時間了嗎?A period of time:一段時間：stay for a while; sang all the while。See Usage Note at awhile 停留下會兒；一直都在唱歌參見 awhileThe time, effort, or trouble taken in doing something:費時：做一件事情的花費時間、努力或工夫：The project wasn't worth my while。這項方案不值得我花工夫，conj。（連接詞）As long as; during the time that:只要；在…時間里：It was lovely while it lasted。當它開著的時間它是很惹人喜愛的At the same time that; although:在…同時；盡管，雖然：While the grandparents love the children, they are strict with them。“雖然祖父母們都愛他們的孩子，但卻對他們要求嚴格”Whereas; and:然而；而，而且：The soles are leather, while the uppers are canvas。鞋跟是皮的，而鞋面是帆布的， 。（及物動詞）whiled， g， whilesTo spend (time) idly or pleasantly:消磨：閑散或輕松地消磨時間：while the hours away。消磨時光。

熱心網友

while是延續性的詞，而when是短暫性的詞。when是一個時間點，而while是一個時間段

熱心網友

when和while都是表時間的，when——當...時，更強調具體時間點。while——在...期間，表示在某一時段內。比如：1.It was rainning when we arrived.我們到的時候正好下雨了。 2.She worked in a bank for a while befor studying law.——她學法律之前在銀行工作過一段時間。這都是最基本的用法，你可以查查詞典，里面講的很清楚。