if条件状语从句的用法及规则
if条件状语从句的用法是，可作为连词，引导条件状语从句。
条件状语从句是由引导词if以及unless等词引导的状语从句。在英文中，"条件"是指某一件事情实现之后(状语从句中的动作)，其它事情(主句中的动作)才能发生，通常译作"假如"、"如果"。
注意：在含有条件状语从句的复合句中，表示将来时态，主句是一般将来时态，祈使句或情态动词，有时也能用现在时。从句要用一般现在时，主将从现原则(主将从现中的"将"并非指将来时，还能够指表示将来含义的；条件状语从句中，从属连词之后的句子是该条件状语从句的从句)。
双语例句：
1、Her joints acheif she exercises.
她的关节一运动就疼。
2、if anyone's to blame, it's me.
如果有人该承担责任，那就是我。
3、You can goif you want.
如果你想走就走吧。
4、I wonderif you can help me.
不知您是否能帮我的忙？
5、if left unchecked, weeds will flourish.
如果不加遏制，杂草就会疯长。
6、if I may just add one thing...
我想再补充一点…
7、'Andif I say no?' she ventured.
“那么我要是说不呢？”她试探说。
8、She askedif I would help.
她问我是否会帮忙。
9、I can't workif I'm cold.
我要是觉得冷就干不了活。
10、Whatif the train is late？
火车要是晚点会怎么样呢？
绛旓細if寮曞鐨勬潯浠剁姸璇粠鍙ュ彲浠ヤ綅浜庝富鍙ヤ箣鍓嶏紝涔熷彲浠ヤ綅浜庝富鍙ヤ箣鍚庛傚鏋滀粠鍙ュ湪鍓嶏紝浠庡彞鍜屼富鍙ヤ箣闂寸敤閫楀彿闅斿紑銆傚锛欼f it does not rain tomorrow, we will go hiking.濡傛灉鏄庡ぉ涓嶄笅闆紝鎴戜滑灏卞幓杩滆冻銆俌ou will get good grades if you study hard.濡傛灉浣犲姫鍔涘涔狅紝灏变細鍙栧緱濂芥垚缁┿3銆佹椂鎬 鍦╥f寮曞鐨勬潯浠剁姸...
绛旓細if寮曞鐨勬潯浠剁姸璇粠鍙ワ紝鎰忔濇槸鈥濆鏋溾 锛岄伒寰濅富灏嗕粠鐜扳滃師鍒欙紝if鍚庨潰鐨勯儴鍒嗘槸浠庡彞銆浠庡彞鍙斁鍦ㄤ富鍙ュ墠闈紝姝ゆ椂瑕佺敤閫楀彿鍒嗗紑锛屼篃鍙斁鍦ㄤ富鍙ュ悗闈銆傚锛1.If it doesn't rain tomorrow , we will go shopping .锛坕f it doesn't rain tomorrow鏄粠鍙ワ級= We will go shopping if it doesn't rain ...
绛旓細if寮曞鐨勬潯浠剁姸璇粠鍙ユ湁锛1銆侀浂鏉′欢鍙/缁濆鐪熷疄鏉′欢鍙 闆舵潯浠跺彞锛屽張鍙粷瀵圭湡瀹炴潯浠跺彞锛岀敤浜庨槓杩颁簨瀹炪傜敤鏉ヨ〃杈惧湪璇ユ潯浠朵笅锛岀粨鏋滀竴瀹氫細濡傛锛堝瑙勫垯锛屽瑙傝寰嬨佺湡鐞嗙瓑锛夈傜粨鏋勬槸锛欼f+涓昏+do/does锛屼富璇+do/does銆傚叾浠庡彞鍜屼富鍙ョ殑璋撹鍔ㄨ瘝閫氬父涓轰竴鑸幇鍦ㄦ椂銆2銆佺涓鏉′欢鍙/鐩稿鐪熷疄鏉′欢鍙 绗竴鏉′欢鍙...
绛旓細鏉′欢浠庡彞涓皳璇姩璇嶇敤杩囧幓瀹屾垚寮忥紝涓昏鐢ㄢ渨ould/could/should/might+have+鍔ㄨ瘝鐨勮繃鍘诲垎璇嶁濆舰寮銆侷f 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勮櫄鎷 鍦ㄨ〃绀...
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...
绛旓細鏉′欢鐘惰浠庡彞鐨勪笁绉嶅舰寮忓涓嬶細if鏉′欢鐘惰浠庡彞鐨涓夌鐢ㄦ硶鍒嗗埆鏄紝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椂鎬併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呫侷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...
绛旓細if浠庡彞鐨涓夌鐢ㄦ硶 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.=You...
