when是什么时态？
when本身没有时态，只有动词才有时态的变化，不过因为when是与时间有关系的副词、介词或者连词，所以它可以用在不同时态的句子里，具体你可以查一下字典，参考一下各个词义下的例句。希望帮到你|！
是距离(发生某事)有多长时间的意思，但表达的是过去的事情.
其中before是从属连词，表示“……才；……就”，引导时间状语从句。
例如：1. It was 10 years before I left China.
我离开中国已经有10年了。
2. It was just 3 days before the book was published.
三天后那本书就出版了。
3. It was three months before he finished the work.
他花了三个月才完成这项工作.
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绛旓細when寮曞鐨勫璇粠鍙ョ殑鏃舵鏄竴鑸幇鍦ㄦ椂銆 渚嬪彞锛 When was the bridge constructed? 閭ｅ骇妗ユ槸浣曟椂淇缓鐨勶紵 When are the removal men coming? 鎼宸ヤ汉浠涔鏃跺欏埌锛 鎵╁睍璧勬枡 When did you get engaged ?浣犱滑浠涔堟椂鍊欒鐨勫锛焀hen does the class start?浠涔堟椂鍊欎笂璇撅紵People eat whe...
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绛旓細When I was a child, I used to play with my friends every day.锛堝綋鎴戣繕鏄釜瀛╁瓙鐨勬椂鍊欙紝鎴戞瘡澶╅兘鍜屾湅鍙嬩滑鐜┿傦級2.while鍒欓氬父鐢ㄦ潵琛ㄧず涓涓寔缁殑鏃堕棿娈碉紝琛ㄧず鏌愪釜鍔ㄤ綔鎴栦簨浠跺湪杩欎釜鏃堕棿娈靛唴鍙戠敓銆倃hile鍚庨潰鐨勪粠鍙ラ氬父浣跨敤杩涜鏃舵锛岃〃绀烘鍦ㄨ繘琛岀殑鍔ㄤ綔鎴栦簨浠躲備緥濡傦細I watched TV while my mother...
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绛旓細鐢when寮曞鐨勬椂闂寸姸璇粠鍙ワ紝涓诲彞鐢ㄨ繃鍘昏繘琛屾椂锛屼粠鍙ュ簲鐢ㄤ竴鑸繃鍘绘椂锛涘鏋滀粠鍙ュ拰涓诲彞鐨勫姩浣滃悓鏃跺彂鐢燂紝涓ゅ彞閮界敤杩囧幓杩涜鏃剁殑鏃跺欙紝澶氱敤while寮曞銆 鐢眞hen寮曞鐨勬椂闂寸姸璇粠鍙ワ紝涓诲彞鐢ㄧ幇鍦ㄨ繘琛屾椂锛屼粠鍙ュ簲鐢ㄤ竴鑸幇鍦ㄦ椂锛涘鏋滀粠鍙ュ拰涓诲彞鐨勫姩浣滃悓鏃跺彂鐢燂紝涓ゅ彞閮界敤鐜板湪杩涜鏃剁殑鏃跺欙紝澶氱敤while寮曞銆 鎵╁睍璧勬枡 ...
绛旓細be doing sth鈥when姝ｈ鍋氭煇浜,鎭板ソ when 鍚庨潰鐨勯偅浠朵簨鎯呭彂鐢 渚嬪彞锛1銆両 was watching the football match when he came in.褰撲粬璧拌繘鏉ョ殑鏃跺欐垜姝ｅ湪鐪嬭冻鐞冭禌銆2銆丠e asked me what I would be doing when he came the next day.浠栭棶鎴戝綋浠栫浜屽ぉ鏉ョ殑鏃跺欐垜浼氬湪骞浠涔銆
绛旓細杩欎釜鐢ㄦ硶鐩稿綋浜巄efore.渚嬪锛歍he class had been on for 10 minutes when I got to school.褰撴垜鍒版牎鏃跺凡缁忎笂璇10鍒嗛挓浜.3銆佷富灏嗗嚭鐜.杩欓噷鐨剋hen鐩稿綋浜巃s soon as,琛ㄧず涓鈥︹﹀氨鈥︹.渚嬪锛欼鈥榣l tell him when he comes back.浠栦竴鍥炴潵鎴戝氨鍛婅瘔浠.鍙﹀鐢ㄤ簬瀹捐浠庡彞涓綔杩炶瘝,鏃犵壒鍒鏃舵瑕佹眰.
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