while与when的区别是什么？
when和while的用法与区别 ：1、由when引导的时间状语从句,主句用过去进行时,从句应用一般过去时；如果从句和主句的动作同时发生,两句都用过去进行时的时候,多用while引导,如：
a. When the teacher came in, we were talking.
当此句改变主从句的位置时,则为：
While we were talking, the teacher came in.
b. They were singing while we were dancing.
2、when和while 还可作并列连词.when表示“在那时”；while表示“而,却”,表对照关系.如：
a. The children were running to move the bag of rice when they heard the sound of a motor bike.
孩子们正要跑过去搬开那袋米,这时他们听到了摩托车的声音.
b. He is strong while his brother is weak.
他长得很结实,而他弟弟却很瘦弱.
3、when,while引导时间状语从句的区别
一、when可以和延续性动词连用,也可以和短暂性动词连用；而while只能和延续性动词连用.
① Why do you want a new job when youve got such a good one already?（get为短暂性动词）你已经找到如此好的工作,为何还想再找新的?
②Sorry,I was out when you called me．（call为短暂性动词）对不起,你打电话时我刚好外出了.
③Strike while the iron is hot．（is为延续性动词,表示一种持续的状态）趁热打铁.
二、when从句的谓语动词可以在主句谓语动作之前、之后或同时发生；while从句的谓语动作必须是和主句谓语动作同时发生.
1．从句动作在主句动作前发生,只用 when.
①When he had finished his homework,he took a short rest．（finished先发生）当他完成作业后,他休息了一会儿.
②When I got to the airport,the guests had left．（got to后发生）当我赶到飞机场时,客人们已经离开了.
2．从句动作和主句动作同时发生,且从句动作为延续性动词时,when,while都可使用.
①When ／While we were dancing,a stranger came in．（dance为延续性动词）当我们跳舞时,一位陌生人走了进来.
②When ／While she was making a phonecall,I was writing a letter．（make为延续性动词）当她在打电话时,我正在写信.
4．在将来时从句中,常用when,且从句须用一般时代替将来时.
①You shall borrow the book when I have finished reading it．在我读完这本书后,你可以借阅.
②When the manager comes here for a visit next week,Ill talk with him about this．下周,经理来这参观时,我会和他谈谈此事.
三、when用于表示“一……就……”的句型中（指过去的事情）.
sb．had hardly（＝scarcely） done sth．when．．．＝Hardly ／ Scarcely had sb．done sth．when．．．
①I had hardly ／scarcely closed my eyes when someone knocked at the door．＝Hardly ／ Scarcely had I closed my eyes when someone knocked at the door．我刚一闭上眼,就有人在敲门了.
②I had hardly ／scarcely entered my room when the telephone rang．＝Hardly ／Scarcely had I entered my room when the telephone rang．我刚一走进房门,电话就响了.
绛旓細while鍜寃hen鐨勫尯鍒細鍚箟涓嶅悓銆佺敤娉曚笉鍚屻佷晶閲嶇偣涓嶅悓銆備竴銆佸惈涔変笉鍚 while conj. 褰 ... 鐨勬椂鍊欙紱铏界劧锛涘敖绠★紱鐒惰屻俷. 涓娈垫椂闂达紱涓浼氬効銆倂. 娑堢（銆倃hen adv. 浠涔堟椂鍊欙紱褰 ... 鏃躲俢onj. 鐒跺悗锛涘彲鏄紱褰 ... 鏃躲俻ron. 浠涔堟椂鍊欍俷. 鏃堕棿銆備簩銆佺敤娉曚笉鍚 while while鐢ㄤ綔杩炶瘝鏃讹紝琛ㄧず...
绛旓細while鍜寃hen鍖哄埆鏈変晶閲嶇偣涓嶅悓锛岀敤娉曚笉鍚岋紝璇嶆簮瑙ｈ涓嶅悓锛屼竴璇嶅涔変笉鍚銆備竴銆佷晶閲嶇偣涓嶅悓锛1銆亀hen鎵寮曞鐨勪粠鍙ワ紝鍏惰皳璇姩璇嶆棦鍙槸鎸佺画鍔ㄨ瘝锛屼篃鍙槸鐭殏鍔ㄨ瘝锛涜皳璇姩璇嶅姩浣滃彂鐢熺殑鏃堕棿鍙互涓庝富鍙ヨ皳璇姩璇嶇殑鍔ㄤ綔鏄悓鏃讹紝鎴栦箣鍓嶃佷箣鍚庛2銆亀hile鍙ヤ腑鐨勮皳璇姩璇嶅簲涓烘寔缁姩璇嶏紝涓嶇敤鐭殏鍔ㄨ瘝锛岃皳璇姩浣滃彂鐢熺殑鏃堕棿閫...
绛旓細when鏃㈠彲琛ㄧず鏌愪竴鐐规椂闂达紝涔熷彲浠ヨ〃绀烘煇涓娈垫椂闂 銆傚湪when寮曞鐨勬椂闂寸姸璇粠鍙ヤ腑锛屽叾璋撹鍔ㄨ瘝鍙互鏄欢缁х殑锛屼篃鍙互鏄潪寤剁画鎬х殑锛屽彲涓庝富鍙ヤ腑鐨勮皳璇姩璇嶅悓鏃跺彂鐢燂紝涔熷彲鍦ㄥ叾鍚庡彂鐢熴備竴銆佸欢缁у姩璇嶅欢缁у姩璇嶅氨鏄寚鑳藉欢缁殑鍔ㄤ綔锛屽彲浠ユ寔缁笅鍘荤殑鍔ㄤ綔锛屾瘮濡傝read锛屽畠鍙互闀挎椂闂村欢缁紝鍙互涓鐩磖eading涓嬪幓銆...
绛旓細when鍜寃hile鐨勫尯鍒細鍚箟涓嶅悓銆佺敤娉曚笉鍚屻佷晶閲嶇偣涓嶅悓銆備竴銆佸惈涔変笉鍚 when adv. 浠涔堟椂鍊欙紱褰 ... 鏃躲俢onj. 鐒跺悗锛涘彲鏄紱褰 ... 鏃躲俻ron. 浠涔堟椂鍊欍俷. 鏃堕棿銆倃hile conj. 褰 ... 鐨勬椂鍊欙紱铏界劧锛涘敖绠★紱鐒惰屻俷. 涓娈垫椂闂达紱涓浼氬効銆倂. 娑堢（銆備簩銆佺敤娉曚笉鍚 when 鐩存帴婧愯嚜鍙よ嫳璇殑hwenne...
绛旓細涓銆佸熀鏈尯鍒 when鍜寃hile閮芥槸寮曞鏃堕棿鐘惰浠庡彞鐨勪粠灞炶繛璇嶏紝浣嗗畠浠殑鐢ㄦ硶瀛樺湪鏄庢樉鐨勫樊寮銆備簩銆佽缁嗚В閲 when鐨勭敤娉 1. 鏃堕棿鐐逛笌鏃堕棿娈碉細when閫氬父寮曞涓涓叿浣撶殑鏃堕棿鐐癸紝濡“when the clock struck twelve”銆傝屽畠涔熷彲浠ヨ〃绀烘煇涓椂闂存锛屽“when we were in college”銆2.鐭殏涓...
绛旓細while鍜寃hen鐨涓昏鍖哄埆鍦ㄤ簬鍏剁敤娉曞拰璇銆傝缁嗚В閲婂涓嬶細涓銆佸熀鏈畾涔 while 鏄竴涓繛璇嶏紝鐢ㄤ簬寮曞涓や釜鍚屾椂鍙戠敓鎴栧瓨鍦ㄧ殑浜嬩欢锛屽己璋冧袱涓姩浣滄垨浜嬩欢鐨勫悓鏃舵с傚畠閫氬父鐢ㄤ簬寰幆璇彞涓紝琛ㄧず“褰……鏃”锛岀敤浜庤〃绀烘椂闂翠笂鐨勫悓鏃舵с倃hen 鏄竴涓枒闂瘝鍜岃繛璇嶏紝鐢ㄤ簬琛ㄧず鏃堕棿涓婄殑鏌愪釜鐐规垨...
绛旓細涓銆佽闊涓嶅悓 while 鑻盵waɪl] 缇嶽waɪl]when 鑻盵wen] 缇嶽wen]浜屻侀噴涔変笉鍚 while conj. 铏界劧; 鍦ㄢ︽湡闂; 褰撯︾殑鏃跺; 涓庘﹀悓鏃; (瀵规瘮涓や欢浜嬬墿)鈥﹁岋紝鈥︾劧鑰; 鍒扳︽椂;n. 涓娈垫椂闂; 涓浼氬効;v. 娑堢（; 杞绘澗鍦板害杩;when adv. 浠涔鏃跺; 浣曟椂; 褰撴椂; ...
绛旓細"when"鍜"while"閮芥槸鑻辫涓殑浠庡睘杩炶瘝锛屽湪鍙ュ瓙涓繛鎺ヤ竴涓粠鍙ュ拰涓涓富鍙ワ紝璧峰埌鏃堕棿鍏崇郴鐨勪綔鐢紝浣嗗湪浣跨敤鏃舵湁涓浜涓嶅悓锛"when"琛ㄧず涓や釜浜嬩欢鍙戠敓鐨勬椂闂存槸鐩镐簰鍏宠仈鐨勶紝涓涓簨浠跺彂鐢熷悗鍙︿竴涓簨浠剁珛鍗冲彂鐢熴備緥濡傦細When I arrived at the airport, the plane had already taken off. 锛堝綋鎴戝埌杈炬満鍦烘椂锛...
绛旓細when涓巜hile鐨勫尯鍒涓銆佽瘝涔夊箍娉涙т笉涓鏍 when 1銆乧onj. 鑰冭檻鍒帮紱鏃㈢劧锛涘綋鈥︽椂锛涘湪鈥︽椂锛涘鏋 2銆乤dv. 浠涔鏃跺欙紝浣曟椂锛涳紙鐢ㄤ簬鏃堕棿鐨勮〃杈炬柟寮忎箣鍚庯級鍦ㄩ偅鏃讹紱鍏舵椂锛涘綋鏃 3銆乸ron. 閭ｆ椂锛涗粈涔堟椂渚 4銆乶. 鏃堕棿锛屾椂鍊欙紱鏃ユ湡锛涘満鍚 while 1銆乧onj. 褰 ... 鐨勬椂鍊欙紱铏界劧锛涘敖绠★紱鐒惰 2銆乶. 涓娈...
绛旓細when鍜寃hile鐨勫尯鍒负锛鎰忔濅笉鍚屻佺敤娉曚笉鍚屻佷晶閲嶇偣涓嶅悓 涓銆佹剰鎬濅笉鍚 1.when锛氫粈涔堟椂鍊欙紱褰 ... 鏃讹紱鐒跺悗锛涘彲鏄紱褰 ... 鏃讹紱鏃堕棿 2.while锛 褰 ... 鐨勬椂鍊欙紱铏界劧锛涘敖绠★紱鐒惰岋紱涓娈垫椂闂达紱涓浼氬効 浜屻佺敤娉曚笉鍚 1.when锛氱敤浣滅枒闂壇璇嶏紝鐢ㄦ潵璇㈤棶鏌愪簨鏇惧彂鐢熸垨灏嗚鍙戠敓鐨勬椂闂达紝寮曞鐗规畩鐤戦棶鍙ワ紱...
