if的条件状语从句的三种用法
1.主将从现，主祈从现，主情从现
2.定义：指某一件事情实现后（状语从句中的动作），其他事情（主句中的动作）才发生，通常译作“假如”。基本结构：if从句用一般现在时，从句用一般将来时（主将从现）if从句用一般现在时，从句用情态动词+do（主情从现）if从句用一般现在时，从句用祈使句（主祈从现）
3.从句在主句前时用逗号隔开；当主句在前时，则不用逗号。
4.主将从现指在时间/条件/让步状语中，如果主句是一般将来时，从句用一般现在时代替一般将来时。
绛旓細鏉′欢鐘惰浠庡彞鐨勫姩璇嶅舰寮(涓夌)涓诲彞鐨勫姩璇嶅舰寮 (1) If + 涓昏 + 鍔ㄨ瘝杩囧幓寮 (be鐨勮繃鍘诲紡鐢╳ere). 閫氬父瑕佷笌涓涓〃绀哄皢鏉ョ殑鏃堕棿鐘惰杩炵敤. (2)If+涓昏(浠讳綍浜虹О鍜屾暟)+should+鍔ㄨ瘝鍘熷舰 (3)if+涓昏(浠讳綍浜虹О鍜屾暟)+were to+鍔ㄨ瘝鍘熷舰 I (we)should+鍔ㄨ瘝鍘熷舰 涓昏+would (might, could)+鍔ㄨ瘝...
绛旓細1,if鏉′欢浠庡彞鏄皳璇敤鍔ㄨ瘝杩囧幓寮,鍒欏悗闈㈢殑涓诲彞鏄儏鎬佸姩璇嶅姞鍔ㄨ瘝鍘熷舰 渚嬶細If I came tomorrow ,we would have the meeting.2,if鏉′欢浠庡彞鏄痺ere to褰㈠紡,鍒欏悗闈㈢殑涓诲彞涔熸槸鎯呮佸姩璇嶅姞鍔ㄨ瘝鍘熷舰 渚嬶細If it were to rain tomorrow ,the meting would be put off.3,if鏉′欢浠庡彞鏄痵hould do褰㈠紡,鍒欏悗闈㈢殑...
绛旓細if鏉′欢鐘惰浠庡彞鐨勪笁绉嶇敤娉曞垎鍒槸锛涓诲皢浠庣幇锛屼富鍙ュ惈鏈夋儏鎬佸姩璇嶏紝涓诲彞涓虹浣垮彞锛屼粠鍙ヨ鐢ㄤ竴鑸幇鍦ㄦ椂鎬銆1銆佺涓绉嶇敤娉曪細琛ㄧず灏嗘潵鍙兘鍙戠敓鐨勪簨鎯銆侷f it snows锛宨'll stay home銆傝繖鍙ョ殑浜嬫佹槸涓诲皢浠庣幇锛孖f it snows锛 i might stay home锛岃繖鍙ョ殑鏃舵佹槸涓绘儏鎬佸姩璇+鍔ㄨ瘝鍘熷瀷锛屼粠鐜般2銆佺浜岀鐢ㄦ硶锛氳〃...
绛旓細If I had been feeling well, I would have been in class.濡傛灉鎴戣韩浣撴拺寰椾綇锛屾垜涔嬪墠灏变細鏉ユ牎浜嗐3銆佽〃绀哄皢鏉ュ彲鑳藉彂鐢熺殑浜嬫儏锛屼篃灏辨槸鍋囧灏嗘潵鎬庝箞鏍凤紝灏变細鍋氫粈涔堜簨鎯呫侷f it rains, I'll stay home.濡傛灉涓嬮洦锛屾垜灏卞憜鍦ㄥ閲屻傛潯浠剁姸璇粠鍙ョ殑娉ㄦ剰浜嬮」锛1銆佹潯浠剁姸璇粠鍙ヤ腑涓鑸笉浣跨敤灏嗘潵鏃舵侊紝灏界...
绛旓細if浠庡彞鐨勪笁绉嶇敤娉 1銆佷富灏嗕粠鐜帮紙涓诲彞涓轰竴鑸皢鏉ユ椂,浠庡彞涓轰竴鑸幇鍦ㄦ椂锛夛紱eg:If it rains(浠庡彞) ,I will stay at home锛堜富鍙ワ級.=I will stay at home if it rains.2銆佷富鍙ュ惈鏈夋儏鎬佸姩璇 锛坢ust銆乵ay銆乧an etc.锛変粠鍙ヤ负涓鑸幇鍦ㄦ椂锛沞g:If you drive too fast ,you may have an accident.=...
绛旓細浠庡彞鐢ㄤ竴鑸皢鏉ユ椂锛涓诲皢浠庣幇锛塱f浠庡彞鐢ㄤ竴鑸幇鍦ㄦ椂锛屼粠鍙ョ敤鎯呮佸姩璇+do锛堜富鎯呬粠鐜帮級if浠庡彞鐢ㄤ竴鑸幇鍦ㄦ椂锛屼粠鍙ョ敤绁堜娇鍙ワ紙涓荤浠庣幇锛3.浠庡彞鍦ㄤ富鍙ュ墠鏃剁敤閫楀彿闅斿紑锛涘綋涓诲彞鍦ㄥ墠鏃讹紝鍒欎笉鐢ㄩ楀彿銆4.涓诲皢浠庣幇鎸囧湪鏃堕棿/鏉′欢/璁╂鐘惰涓紝濡傛灉涓诲彞鏄竴鑸皢鏉ユ椂锛屼粠鍙ョ敤涓鑸幇鍦ㄦ椂浠ｆ浛涓鑸皢鏉ユ椂銆
绛旓細if鐨勭敤娉 1銆乮f浣滀负杩炶瘝锛屽紩瀵鏉′欢鐘惰浠庡彞锛岃〃绀衡滃亣濡傦紝濡傛灉鈥濈瓑銆傚湪澶嶅悎鍙ヤ腑濡傛灉涓诲彞鐢ㄥ皢鏉ユ椂锛屽垯if寮曞鐨勭姸璇粠鍙ョ敤涓鑸幇鍦ㄦ椂銆俥g:If it rains(浠庡彞) ,I will stay at home锛堜富鍙ワ級銆=I will stay at home if it rains.He will come if you invite him.濡傛灉浣犺浠,浠栦細鏉ョ殑銆2銆佷富鍙...
绛旓細if 鐨勬潯浠朵粠鍙ュ垎涓虹湡瀹炴潯浠朵粠鍙ュ拰铏氭嫙鏉′欢浠庡彞銆傝岀湡瀹炴潯浠朵粠鍙ラ傜敤浜涓诲皢浠庣幇锛屾槸鍋囪鏈夊彲鑳藉彂鐢熺殑銆傝岃櫄鎷熸潯浠朵粠鍙ユ槸鍋囪涓嶅お鍙兘鍙戠敓鐨勩侷F鐨勮櫄鎷熻姘旀湁涓夌锛氬唴瀹 浠庡彞 涓诲彞 涓庣幇鍦ㄤ簨瀹炵浉鍙 鍔ㄨ瘝杩囧幓寮忥紙be鐢╳ere锛墂ould/could/should/might+鍔ㄥ師 涓庤繃鍘讳簨瀹炵浉鍙 had+鍔ㄨ瘝杩囧幓鍒嗚瘝 would/could/should...
绛旓細鎴戜滑鍙互鐢ㄩ潪甯哥敓娲诲寲鐨勯昏緫鏉ヨ浣廼f寮曞鐨勪富浠庢椂鎬侊紝瑙勫垯濡備笅锛琛ㄧず灏嗘潵鍙兘鍙戠敓鐨勪簨鎯锛屼篃灏辨槸鍋囧灏嗘潵鎬庝箞鏍凤紝灏变細鍋氫粈涔堜簨鎯呫備緥1锛欼f it rains, I'll stay home.鏃舵侊細涓诲皢浠庣幇 渚2锛欼f it rains, I might stay home.鏃舵侊細涓绘儏鎬佸姩璇+鍔ㄨ瘝鍘熷瀷锛屼粠鐜 琛ㄧず褰撲笅鍙兘鍙戠敓鐨勬儏鍐碉紝涔熷氨鏄亣濡...
绛旓細if铏氭嫙璇皵鐨勪笁绉褰㈠紡锛氣憼瀵圭幇鍦ㄦ儏鍐电殑铏氭嫙銆佲憽瀵硅繃鍘绘儏鍐电殑铏氭嫙銆佲憿瀵瑰皢鏉ユ儏鍐电殑铏氭嫙銆if鐢ㄦ硶:1銆乮f浣滀负浠庡睘杩炶瘝锛屽彲寮曞鏉′欢鐘惰浠庡彞銆佽姝ョ姸璇粠鍙ュ拰鍚嶈瘝浠庡彞銆2銆乮f寮曞鏉′欢鐘惰浠庡彞锛屼粠鍙ュ彲涓虹湡瀹鏉′欢浠庡彞锛屼篃鍙负铏氭嫙鏉′欢浠庡彞銆傚涓虹湡瀹炴潯浠朵粠鍙ワ紝璋撹鐢ㄩ檲杩拌姘旓紝琛ㄧず鍙兘鎬у緢澶э紝浣溾滃亣浣裤佸鏋溾...
