if虚拟语气
if虚拟语气如下：
1、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。
If I were you,I would choose to work in a small town.
如果我是你，我会选择在小城镇工作。（事实上我不是你）。
注意：在条件从句中，如果谓语动词是be的形式，不管主语是单数还是复数，书面语中用were,而口语中如果是单数，也可以用was,不过在if I were...中一般用were。
2、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。
If it had not been for your help yesterday,I could not have caught the bus.
如果昨天没有你的帮助，我不会赶上公交车。（事实是你昨天已经帮助了我，所以我赶上了车)。
3、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。
If things were to be twice，all would be wise.
假如凡事都可以重新做一次，人人皆可成为聪明人。（事实是并不是所有的事都可以重新做一次)。
注意：在书面语中，如果虚拟条件从句中有were，had 或 should，可以把if省略，把这几个词放到主语之前，构成主谓倒装。
绛旓細if铏氭嫙璇皵濡備笅锛1銆佸鐜板湪鎯呭喌鐨勮櫄鎷銆傛潯浠朵粠鍙ヤ腑璋撹鍔ㄨ瘝鐢ㄤ竴鑸繃鍘诲紡锛屼富鍙ョ敤鈥渨ould/should/might/could+鍔ㄨ瘝鍘熷舰鈥濆舰寮忥紝琛ㄧず瀵圭幇鍦ㄤ笉鍙兘瀹炵幇鎯呭喌鐨勫亣鎯炽侷f I were you,I would choose to work in a small town.濡傛灉鎴戞槸浣狅紝鎴戜細閫夋嫨鍦ㄥ皬鍩庨晣宸ヤ綔銆傦紙浜嬪疄涓婃垜涓嶆槸浣狅級銆傛敞鎰忥細鍦ㄦ潯浠朵粠鍙ヤ腑锛...
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1銆乮f浣滀负杩炶瘝锛屽紩瀵兼潯浠剁姸璇粠鍙ワ紝琛ㄧず鈥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銆佷富鍙ュ惈鏈夋儏鎬佸姩...
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忓簲浣滅浉搴旂殑璋冩暣銆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...
绛旓細铏氭嫙璇皵if鐨勪笁绉嶇敤娉曞涓嬶細琛ㄧず涓庣幇鍦ㄤ簨瀹炵浉鍙嶇殑鎯呭喌銆佽〃绀轰笌杩囧幓浜嬪疄鐩稿弽鐨勬儏鍐点佽〃绀轰笌灏嗘潵浜嬪疄鐩稿弽銆傝〃绀轰笌鐜板湪浜嬪疄鐩稿弽鐨勬儏鍐碉細1銆佷粠鍙ワ細If+涓昏+鍔ㄨ瘝涓鑸繃鍘绘椂(Be鍔ㄨ瘝鐢╳ere)銆2銆佷富鍙ワ細涓昏+ should/would/might/could+do銆3銆佷緥鍙ワ細If I were you锛孖 would take an umbrella銆傝〃绀轰笌杩囧幓浜嬪疄...
绛旓細铏氭嫙璇皵if鐨勭粨鏋1銆佽〃绀轰笌鐜板湪浜嬪疄鐩稿弽鐨勬儏鍐锛氫粠鍙ワ細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爄f+涓昏+were to ...
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ユ湁涓夌锛氾紙浠庡彞锛塱f+杩囧幓鏃/if+were to do/if...
绛旓細if铏氭嫙璇皵鐨勪笁绉嶆椂鎬佸涓嬶細1銆佸鐩墠鐘跺喌鐨勮櫄鎷 鏉′欢浠庡彞涓皳璇姩璇嶇敤涓鑸繃鍘绘椂锛屼富鍙ョ敤鈥渨ould/should/might/could+鍔ㄨ瘝鍘熷舰鈥濇柟寮忥紝琛ㄦ槑瀵圭洰鍓嶄笉澶彲鑳藉疄鐜扮姸鍐电殑骞绘兂銆侷f I were you,I would choose to work in a small town.鍋囧鎴戞槸浣狅紝鎴戜細閫夋嫨鍦ㄥ皬鍩庨晣宸ヤ綔銆傦紙瀹為檯涓婃垜涓嶄細鏄綘锛2銆佸...
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 ...
绛旓細if寮曞鐨勬潯浠跺彞涓殑铏氭嫙璇皵 if寮曞鐨勬潯浠剁姸璇粠鍙ュ彲浠ュ垎涓轰袱绫:鐪熷疄鏉′欢鍙(Sentences of Real Condition)鍜岃櫄鎷熸潯浠跺彞銆傚嚒鏄亣璁剧殑鎯呭喌鍙戠敓鎬у彲鑳藉緢澶,灏辨槸鐪熷疄鏉′欢鍙;褰撳亣璁炬槸涓嶅ぇ鍙兘瀹炵幇鏃,灏辨槸铏氭嫙鏉′欢鍙ャ傚:If I have time, I will help you with this work. 濡傛灉鎴戞湁鏃堕棿, 鎴戜細甯姪浣犲仛鐨勩侷f time...
