while前后时态怎么用？
while前后时态用法主要依据句子的时间关系来决定，具体有以下几种情况。
当while从句的动作与主句的动作同时发生时，一般使用一般过去时。例如：While he was studying, she was cooking dinner.当while从句的动作在主句动作之前完成时，一般使用过去完成时。例如：While I had already finished my work, he arrived.、
1、在主句动作之后
当while从句的动作在主句动作之后发生时，可以使用一般过去时、现在完成时或者一般将来时，取决于具体语境。例如：While I was watching a movie, he has already cleaned the house. 或 While I was watching a movie, he will clean the house.
2、与主句的动作同时发生且持续一段时间
当while从句的动作与主句的动作同时发生且持续一段时间时，可以使用过去进行时或现在进行时。例如：While she was sleeping, I was reading a book.当while从句表示经常性或习惯性动作时，使用一般过去时。
例如：While I lived in Shanghai, I would often go to the park.当while从句转述过去发生的事实或状态时，使用过去完成时。例如：While she told me her story, I had already heard it before.
当while从句表示将来的意义时，可以使用一般将来时。例如：While I am on vacation next week, I will visit my parents.当while从句表示未来的条件时，使用一般现在时。例如：While she is in town, I can ask her for help.
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绛旓細while鍚庨潰鐢浠涔鏃舵鍥炵瓟濡備笅锛1.杩涜鏃舵侊紙Continuous Tense锛夛細浣跨敤杩涜鏃舵佸彲浠ヨ〃绀轰竴涓繃绋嬫鍦ㄨ繘琛屼腑锛岃屼笖鍙兘杩樻病鏈夊畬鎴愩傚綋浣犳兂琛ㄨ揪"while"鍚庨潰鐨勪簨浠朵笌鍙︿竴涓悓鏃舵垨鎸佺画鍙戠敓鏃讹紝鍙互浣跨敤杩涜鏃舵併"While I was studying, my sister was watching TV."锛堝綋鎴戝湪瀛︿範鏃讹紝鎴戠殑濡瑰鍦ㄧ湅鐢佃銆傦級- ...
绛旓細涓銆佸紩瀵兼椂闂寸姸璇粠鍙 璇戜綔鈥滃綋鈥︹︽椂鈥濄備緥濡傦細1. Make hay while the sun shines.瓒佺潃鏈夊お闃虫檼鏅掕崏銆傦紙涔樻満琛屼簨锛屾姄绱ф椂鏈恒傦級2. We must work hard to gain more knowledge while we are young.瓒佺潃鐜板湪杩樺勾杞伙紝鎴戜滑蹇呴』鍒昏嫤瀛︿範锛岃幏寰楁洿澶氱殑鐭ヨ瘑銆備簩銆佸紩瀵艰姝ョ姸璇粠鍙 甯告斁鍦ㄥ彞棣栵紝璇戜綔鈥...
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绛旓細while鏀惧湪鍙ラ鐨鏃舵鎰忔濆彲浠ユ槸涓鑸幇鍦ㄦ椂锛岃繘琛屾椂锛屽畬鎴愭椂銆1銆亀hile鐨勭敤娉曟椂鎬侊細涓鑸幇鍦ㄦ椂 while鐨勪竴鑸幇鍦ㄦ椂鐢ㄦ硶琛ㄧず涓涓姩浣滄垨鐘舵佹鍦ㄨ繘琛岀殑鏃跺欙紝鍚屾椂鍙︿竴涓姩浣滄垨鐘舵佷篃鍦ㄨ繘琛屻備緥濡傦細While I'm at school, my mother looks after my little sister. (鎴戜笂瀛︾殑鏃跺欙紝鎴戝濡堜細鐓х湅鎴戝濡...
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绛旓細while鍚庨潰閫氬父浣跨敤杩涜鏃舵垨鎸佺画鏃舵銆倃hile浣滀负杩炶瘝鏃讹紝閫氬父鐢ㄤ簬寮曞鏃堕棿鐘惰浠庡彞锛岃〃绀轰袱涓姩浣滄垨浜嬩欢鐨勫悓鏃跺彂鐢熴傚湪杩欑鎯呭喌涓嬶紝while鍚庨潰鐨勫姩璇嶆椂鎬佸線寰涓庝富鍙ヤ腑鐨勫姩浣滄椂鎬佷繚鎸佷竴鑷达紝浣跨敤杩涜鏃舵垨鎸佺画鏃舵併傝繖鏄洜涓簑hile寮鸿皟涓や釜鍔ㄤ綔鐨勫悓鏃跺彂鐢熷拰鎸佺画杩涜銆傚綋while寮曞鐨勬椂闂寸姸璇粠鍙ユ弿杩扮殑鏄竴涓鍦ㄨ繘琛岀殑...
绛旓細while 1. 閫氬父鐢ㄥ湪浜嬫儏鍚屾椂鍙戠敓鐨勬儏鍐碉紝涓诲彞鍜屼粠鍙ラ兘鐢ㄨ繃鍘昏繘琛屾椂锛屽锛歁other was cooking the meal while i was doing my homework.褰撳濡堝湪鍋氶キ鐨勬椂鍊欙紝鎴戞鍦ㄥ仛鍔熻 2. 琛ㄧず鍚屾椂锛岃...鐨勬剰鍛虫椂锛屼富鍙ュ拰浠庡彞鐨鏃舵鏄竴鑷寸殑锛屽嵆鍙互閮芥槸涓鑸幇鍦ㄦ椂锛屽張鍙互閮芥槸涓鑸繃鍘绘椂锛屽锛欼 like playing ...
