when作从句的时态
1、表示有规律的，都用一般现在时。2、表示将来的事情，用主将从现（主句将来时，从句一般现在时）。
3、表示过去两个有先后的动作，都用过去式。
4、表示一个动作正在进行（过去进行时），另一个动作插入（过去式）。
扩展资料
表示有规律的,都用一般现在时：
例如：Water turns into steam when we heat it.
表示将来的事情,用主将从现（主句将来时,从句一般现在时）：
例如：I will tell him when he comes back.
表示过去两个有先后的动作,都用过去式：
例如：When he came back,I told him the news.
表示一个动作正在进行（过去进行时）,另一个动作插入（过去式）：
例如：I met my teacher when i was walking in the street.
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绛旓細3銆佽〃绀鸿繃鍘讳袱涓湁鍏堝悗鐨勫姩浣滐紝閮界敤杩囧幓寮忋When he came back,I told him the news.浠栧洖鏉ユ椂锛屾垜鎶婃秷鎭憡璇変簡浠栥4銆佽〃绀轰竴涓姩浣滄鍦ㄨ繘琛岋紙杩囧幓杩涜鏃讹級锛屽彟涓涓姩浣滄彃鍏ワ紙杩囧幓寮忥級銆侷 met my teacher when i was walking in the street.鎴戝湪琛椾笂璧扮殑鏃跺欓亣鍒颁簡鎴戠殑鑰佸笀銆傚璇浠庡彞鐨`鏃舵锛...
绛旓細濡傛灉鏄璇粠鍙ワ紝閭ｄ箞鏃舵闂灏卞弬鑰冨璇浠庡彞鐨.鍋氭硶 濡傛灉鏄椂闂寸姸璇粠鍙ワ紝鍒欏熀鏈湁4绉 1銆佽〃绀烘湁瑙勫緥鐨勶紝閮界敤涓鑸幇鍦ㄦ椂 濡傦細Water turns into steam when we heat it.2銆佽〃绀哄皢鏉ョ殑浜嬫儏锛岀敤涓诲皢浠庣幇锛堜富鍙ュ皢鏉ユ椂锛屼粠鍙ヤ竴鑸幇鍦ㄦ椂锛夊锛欼 will tell him when he comes back.3銆佽〃绀鸿繃鍘讳袱涓湁...
绛旓細when鐨勭敤娉曞墠鍚鐨勬椂鎬濡備笅锛氬鏋滄槸瀹捐浠庡彞锛岄偅涔堟椂鎬侀棶棰樺氨鍙傝冨璇浠庡彞鐨鍋氭硶锛屽鏋滄槸鏃堕棿鐘惰浠庡彞锛屽垯鍩烘湰鏈4绉嶃1銆佽〃绀烘湁瑙勫緥鐨勶紝閮界敤涓鑸幇鍦ㄦ椂銆傚锛歐ater turns into steam when we heat it.2銆佽〃绀哄皢鏉ョ殑浜嬫儏锛岀敤涓诲皢浠庣幇锛堜富鍙ュ皢鏉ユ椂锛屼粠鍙ヤ竴鑸幇鍦ㄦ椂锛夈傚锛欼 will i tell him when he ...
绛旓細1.when寮曞鐨勬椂闂寸姸璇浠庡彞锛岄伒寰富灏嗕粠鐜板師鍒 濡 I will tell you When he comes back.褰撲粬鍥炴潵鏃舵垜浼氬憡璇変綘銆2.鍓嶅悗鏃舵瑕佷竴鑷 濡 He could swim when He was two years ago.浠栦袱宀佹椂浼氭父娉炽3. 褰撲竴涓姩浣滃彂鐢燂紙涓鑸繃鍘绘椂锛夛紝鍙︿竴涓姩浣滄鍦ㄨ繘琛岋紙杩囧幓杩涜鏃舵侊級濡 The students were ...
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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.
