if虚拟语气的三种形式
if虚拟语气的三种形式：①对现在情况的虚拟、②对过去情况的虚拟、③对将来情况的虚拟。
对将来情况的虚拟
在表示与将来事实相反的条件从句中，谓语动词可用should do,were to do或动词的过去式三种形式表示，但意义略有不同。should表示的可能性最大，动词过去式的可能性次之，were to do 的可能性最小。
主句：主语＋would/should/might/could＋动词原形
从句：should＋动词原形/were to＋动词原形。
Eg：If he should go to Harvard University, he would make full use of his time.
如果他要上哈佛大学的话，他就会充分利用他的时间了。
对现在情况的虚拟
条件从句中谓语动词用一般过去式，主句用“would/should/might/could+动词原形”形式，表示对现在不可能实现情况的假想。
主句：主语＋would/should/might/could＋动词原形
从句：动词过去式
Eg：If he studied at this school, he would know the enviornment around the school very much.
如果他在这所学校学习的话，他会很了解周边环境。
对过去情况的虚拟
条件从句中谓语动词用过去完成式，主语用“would/could/should/might+have+动词的过去分词”形式。
提出过去的未发生的条件
主句：主语＋would/should/might/could have＋动词过去分词
从句：had＋动词过去分词
Eg：If I had read the book, I would have told you about it.
绛旓細1銆佽〃绀轰笌鐜板湪浜嬪疄鐩稿弽鐨勬儏鍐碉細浠庡彞锛If+涓昏+鍔ㄨ瘝涓鑸繃鍘绘椂(Be鍔ㄨ瘝鐢╳ere)銆備富鍙ワ細涓昏+ should/would/might/could+do銆2銆佽〃绀轰笌杩囧幓浜嬪疄鐩稿弽鐨勬儏鍐碉細浠庡彞锛欼f+涓昏+had+done銆備富鍙ワ細涓昏+should/would/might/could+have done銆3銆佽〃绀轰笌灏嗘潵浜嬪疄鐩稿弽锛氫粠鍙ワ細鈶if+涓昏+were to do銆傗憽if+涓昏+...
绛旓細should it rain tomorrow,we would staly at home.閿欑患鏃堕棿锛氭墍璋撻敊缁兼椂闂存槸鎸囦富鍙ュ拰浠庡彞鐨勫姩浣滀笉鏄彂鐢熷湪鍚屼竴鏃堕棿銆傝繖鏃讹紝闇瑕佹牴鎹剰鎬濋夌敤琛ㄧず涓嶅悓鏃堕棿鐨铏氭嫙璇皵褰㈠紡銆備緥鍙ワ細if i were you ,i would have taken his advice.锛堜粠鍙ヨ〃绀虹幇鍦ㄦ椂闂达紝涓诲彞琛ㄧず杩囧幓鏃堕棿锛夛紝鎴戣鏄綘锛屽氨鍚粬鐨勫繝鍛婁簡銆
绛旓細锛2锛If there were a heavy snow next Sunday,we would not go skating.濡傛灉涓嬪懆鏃ヤ笅澶ч洩锛屾垜浠氨涓嶈兘鍘绘粦鍐颁簡銆(浜嬪疄锛氫笅闆彲鑳芥у緢灏忥級銆傚洓銆佹湁鏃惰櫄鎷熸潯浠跺彞涓紝缁撴灉涓诲彞鍜屾潯浠朵粠鍙ョ殑璋撹鍔ㄤ綔鑻ヤ笉鏄悓鏃跺彂鐢熸椂锛铏氭嫙璇皵鐨勫舰寮搴斾綔鐩稿簲鐨勮皟鏁淬傝繖绉嶆潯浠跺彞鍙敊缁兼潯浠跺彞銆1銆佷粠鍙ョ殑鍔ㄤ綔涓庤繃鍘讳簨瀹...
绛旓細if浠庡彞鐨铏氭嫙璇皵鍘熺悊锛1銆佸鏋滃彞瀛愬湪鎯宠薄鐜板湪鍙戠敓鑰屽疄闄呮湭鍙戠敓鐨勪簨浠讹紝鐢辩幇鍦ㄦ椂鍊掗鎴愯繃鍘绘椂锛氾紙浠庡彞锛塱f+杩囧幓鏃讹紝锛堜富鍙ワ級4涓儏鎬佸姩璇+鍔ㄨ瘝鍘熷舰 2銆佸鏋滃彞瀛愬湪鎯宠薄灏嗘潵鍙戠敓鑰屽疄闄呬笉浼氬彂鐢熺殑浜嬩欢锛岀敱灏嗘潵鏃跺掗鎴愯繃鍘绘椂锛屾墍浠ヤ笌1鏄竴鏍风殑锛屼絾鏄澶勪粠鍙鏈変笁绉锛氾紙浠庡彞锛塱f+杩囧幓鏃/if+were to do/if...
绛旓細if鍚庡彲浠ユ帴铏氭嫙璇皵銆傦紙1锛夌涓绉嶆槸涓庣幇鍦ㄤ簨瀹炵浉鍙嶏紝if浠庡彞璋撹鐢ㄨ繃鍘诲紡鎴栬厀ere銆傦紙2锛夌浜岀鏄笌杩囧幓浜嬫儏鐩稿弽锛宨f浠庡彞璋撹鐢ㄨ繃鍘诲畬鎴愭椂锛歨ad+杩囧幓鍒嗚瘝銆傦紙3锛夌涓夌鏄笌灏嗘潵浜嬪疄鐩稿弽锛宨f浠庡彞璋撹鐢ㄥ姩璇嶈繃鍘诲紡锛宻hould +鍔ㄨ瘝鍘熷舰锛屾垨were to+鍔ㄨ瘝鍘熷舰銆俰f鍙岃渚嬪彞1.She gets very upset if I ...
绛旓細If it had not been for your help yesterday,I could not have caught the bus.濡傛灉鏄ㄥぉ娌℃湁浣犵殑甯姪锛屾垜涓嶄細璧朵笂鍏氦杞︺傦紙浜嬪疄鏄綘鏄ㄥぉ宸茬粡甯姪浜嗘垜锛屾墍浠ユ垜璧朵笂浜嗚溅)3銆佸灏嗘潵鎯呭喌鐨铏氭嫙 鍦ㄨ〃绀轰笌灏嗘潵浜嬪疄鐩稿弽鐨勬潯浠朵粠鍙ヤ腑锛岃皳璇姩璇嶅彲鐢╯hould do,were to do鎴栧姩璇嶇殑杩囧幓寮涓夌褰㈠紡琛ㄧず锛屼絾...
绛旓細铏氭嫙璇皵鐢ㄦ潵琛ㄧず鍋囨兂锛岃屼笉琛ㄧず瀹㈣瀛樺湪鐨勪簨瀹烇紝鎵璇寸殑鏄竴涓潯浠讹紝涓嶄竴瀹氭槸浜嬪疄锛屾垨涓庝簨瀹炵浉鍙嶃傝櫄鎷熻姘旈氳繃璋撹鍔ㄨ瘝鐨勭壒娈褰㈠紡鏉ヨ〃绀恒傝嫳璇腑鐨勮姘斿垎涓洪檲杩拌姘斻佺浣胯姘斻佽櫄鎷熻姘斾笁绫汇傝櫄鎷熻姘旇〃绀鸿璇濊呭仛鍑虹殑鍋囪骞堕潪浜嬪疄锛屾垨闅句互瀹炵幇鐨勶紝鐢氳嚦琛ㄨ揪鐩稿弽鐨勬蹇点傚彟澶栬〃绀轰富瑙傛効鏈涙垨琛ㄨ揪鏌愮寮虹儓鐨勬劅鎯...
绛旓細If it had not been for your help yesterday,I could not have caught the bus.濡傛灉鏄ㄥぉ娌℃湁浣犵殑甯姪锛屾垜涓嶄細璧朵笂鍏氦杞︺傦紙浜嬪疄鏄綘鏄ㄥぉ宸茬粡甯姪浜嗘垜锛屾墍浠ユ垜璧朵笂浜嗚溅)涓夈佸灏嗘潵鎯呭喌鐨铏氭嫙 鍦ㄨ〃绀轰笌灏嗘潵浜嬪疄鐩稿弽鐨勬潯浠朵粠鍙ヤ腑锛岃皳璇姩璇嶅彲鐢╯hould do,were to do鎴栧姩璇嶇殑杩囧幓寮涓夌褰㈠紡琛ㄧず锛屼絾...
绛旓細1.褰if鍚庨潰鎺ヤ竴鑸幇鍦ㄦ椂鐨勫姩璇嶆椂,琛ㄧず瀵瑰皢鏉ョ殑涓绉嶆帹娴.if sb do sth sb will/shall do sth.if you go with me,you shall be rewarded.2.褰搃f鍚庨潰鎺ヤ竴鑸繃鍘绘椂鐨勫姩璇嶆椂,鍒欐槸涓绉铏氭嫙璇皵.if sb did sth sb would/should do sth.if i didn't make that mistake,i would't have suffere...
绛旓細铏氭嫙璇皵 铏氭嫙璇皵(Subjunctive Mood)杩欎竴璇硶椤圭洰鏄悇绫昏嫳璇冭瘯涓績娴嬭瘯鐨勯噸鐐逛箣涓銆傝櫄鎷熻姘旀槸涓绉嶇壒娈婄殑鍔ㄨ瘝褰㈠紡锛岀敤鏉ヨ〃绀鸿璇濅汉鎵璇寸殑璇濆苟涓嶆槸浜嬪疄锛岃屾槸涓绉嶅亣璁俱佹効鏈涖佹鐤戞垨鎺ㄦ祴銆傗厾鐢ㄤ互琛ㄧず铏氭嫙鏉′欢鐨勮櫄鎷熻姘 鈷 鐢if鏉′欢浠庡彞琛ㄧず鐨勮櫄鎷熸潯浠讹紝鏄櫄鎷熸潯浠舵渶鏅鐨勬柟寮銆傗憼 铏氭嫙鐜板湪鏃惰〃绀轰笌鐜板湪...
