if的用法，，，，，，，，， if的用法，请解释

if\u7684\u5012\u88c5\u7528\u6cd5\uff1f

if\u7684\u5012\u88c5\u7528\u6cd5\u5982\u4e0b\uff1a
1\u3001if\u4f5c\u4e3a\u4ece\u5c5e\u8fde\u8bcd,\u53ef\u5f15\u5bfc\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u3001\u8ba9\u6b65\u72b6\u8bed\u4ece\u53e5\u548c\u540d\u8bcd\u4ece\u53e5\u3002
2\u3001if\u5f15\u5bfc\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5,\u4ece\u53e5\u53ef\u4e3a\u771f\u5b9e\u6761\u4ef6\u4ece\u53e5,\u4e5f\u53ef\u4e3a\u865a\u62df\u6761\u4ef6\u4ece\u53e5\u3002\u5982\u4e3a\u771f\u5b9e\u6761\u4ef6\u4ece\u53e5,\u8c13\u8bed\u7528\u9648\u8ff0\u8bed\u6c14,\u8868\u793a\u53ef\u80fd\u6027\u5f88\u5927,\u4f5c\u201c\u5047\u4f7f\u201d\u201c\u5982\u679c\u201d\u89e3,\u901a\u5e38\u7528\u4e00\u822c\u73b0\u5728\u65f6\u4ee3\u66ff\u4e00\u822c\u5c06\u6765\u65f6;
3\u3001if\u5f15\u5bfc\u7684\u865a\u62df\u6761\u4ef6\u53e5\u4e2d,\u52a9\u52a8\u8bcdwere,should,had\u53ef\u4ee5\u79fb\u81f3\u4e3b\u8bed\u524d,\u6b64\u65f6if\u53ef\u7701\u7565\u3002
4\u3001if\u5f15\u5bfc\u7684\u6761\u4ef6\u4ece\u53e5\u4e2d\u53ef\u4ee5\u7701\u7565be\u548c\u4e3b\u8bed\u3002
if
\u8bfb\u97f3\uff1a\u82f1 [ɪf] \u7f8e [ɪf]
\u91ca\u4e49\uff1a\u5982\u679c\uff0c\u5047\u82e5\uff0c\u5018\u82e5\uff0c\u5f53\uff0c\u65e0\u8bba\u4f55\u65f6\uff0c\u6bcf\u6b21\u3002
\u8bed\u6cd5\uff1aif\u5f15\u5bfc\u7684\u6761\u4ef6\u4ece\u53e5\uff0c\u6709\u65f6\u540e\u63a5only\u4ee5\u52a0\u5f3a\u5176\u8bed\u6c14\uff0c\u8868\u793a\u8bf4\u8bdd\u4eba\u975e\u5e38\u76fc\u671b\u67d0\u4eba\u63d0\u51fa\u7684\u6761\u4ef6\u80fd\u591f\u5b9e\u73b0\u3002
\u4f8b\u53e5\uff1a
She gets very upset if I exclude her from anything.
\u8981\u662f\u6709\u4ec0\u4e48\u4e8b\u60c5\u6211\u4e0d\u8ba9\u5979\u53c2\u52a0\uff0c\u5979\u4f1a\u975e\u5e38\u96be\u8fc7\u3002

\u6269\u5c55\u8d44\u6599if\u7684\u8fd1\u4e49\u8bcd\uff1awhether
whether
\u8bfb\u97f3\uff1a\u82f1 [ˈweðə(r)] \u7f8e [ˈweðər]
\u91ca\u4e49\uff1a(\u8868\u793a\u4e24\u79cd\u60c5\u51b5\u90fd\u771f\u5b9e)\u662f\u2026(\u8fd8\u662f)\uff0c\u6216\u8005\u2026(\u6216\u8005)\u3002
\u8bed\u6cd5\uff1awhether\u8fd8\u53ef\u5f15\u5bfc\u8ba9\u6b65\u72b6\u8bed\u4ece\u53e5\uff0c\u610f\u601d\u662f\u201c\u4e0d\u7ba1\uff0c\u65e0\u8bba\u201d\uff0c\u4ece\u53e5\u4e2d\u901a\u5e38\u7528\u4e00\u822c\u73b0\u4ee3\u65f6\u4ee3\u66ff\u5c06\u6765\u65f6\u3002
\u4f8b\u53e5\uff1a
They now have two weeks to decide whether or not to buy.
\u73b0\u5728\u4ed6\u4eec\u6709\u4e24\u5468\u65f6\u95f4\u51b3\u5b9a\u5230\u5e95\u4e70\u8fd8\u662f\u4e0d\u4e70\u3002

\u4e00\u3001if\u4f5c\u4e3a\u8fde\u8bcd\u8fd8\u53ef\u4ee5\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5\uff0c\u610f\u4e3a\u662f\u5426\u3002
\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5\u65f6\u548cwhether\u610f\u601d\u76f8\u540c\u3002
\u4f8b\u5982\uff1a
Lily asked if \uff0f whether she liked it.
\u8389\u8389\u95ee\u5979\u662f\u5426\u559c\u6b22\u5b83\u3002
\u4e8c\u3001if\u8fd8\u53ef\u4ee5\u5f15\u5bfc\u8ba9\u6b65\u72b6\u8bed\u4ece\u53e5\u3002\u8fd9\u65f6if\u5f53\u4f5c\u201c\u5373\u4f7f\u662f\u201d\uff0c\u201c\u867d\u8bf4\u201d\u89e3\u3002
\u4f8b\u5982\uff1a
If she\u2019s poor\uff0cat least she\u2019s honest\uff0e
\u867d\u8bf4\u5979\u5f88\u7a77\uff0c\u4f46\u81f3\u5c11\u5979\u8fd8\u662f\u8bda\u5b9e\u7684\u3002
\u4e09\u3001if\u5f15\u5bfc\u65f6\u95f4\u72b6\u8bed\u4ece\u53e5\uff0c\u5f53if\u505a\u201c\u5f53\u201d\u6216\u201c\u65e0\u8bba\u4f55\u65f6\u201d\u89e3\u800c\u4e0d\u542b\u6709\u6761\u4ef6\u4e4b\u4e49\u65f6\uff0cif\u4ece\u53e5\u4e2d\u7684\u65f6\u6001\u4e0e\u4e3b\u53e5\u4e2d\u7684\u65f6\u6001\u76f8\u540c\u3002
\u4f8b\u5982\uff1a
If youmix yellow and blue\uff0cyou get green\uff0e
\u4f60\u5c06\u9ec4\u8272\u4e0e\u84dd\u8272\u6df7\u5408\uff0c\u4fbf\u4f1a\u5f97\u5230\u7eff\u8272\u3002

\u56db\u3001if\u4e0e\u5176\u5b83\u4e00\u4e9b\u4ecb\u8bcd\u7684\u8fde\u7528\u3002
as\u4e0eif\u8fde\u7528\uff0c\u5b83\u7684\u610f\u601d\u662f\uff1a\u201c\u4eff\u4f5b\u3001\u597d\u50cf\u201d\u540c\u6837\u5f15\u5bfc\u4ece\u53e5\u3002
\u4f8b\u5982\uff1a
It isn\u2019t as if we are rich\uff0e(We are not rich\uff0e)
\u6211\u4eec\u4e0d\u50cf\u5bcc\u6709\u7684\u6837\u5b50\u3002(\u5373\u6211\u4eec\u4e0d\u5bcc\u6709)
\u4e94\u3001as if\u8fd8\u53ef\u4ee5\u5f15\u5bfc\u611f\u53f9\u53e5\u3002
\u4f8b\u5982\uff1a
As if I would allow it!
\u597d\u50cf\u6211\u4f1a\u7b54\u5e94\u4f3c\u7684\uff01

If的用法 一、连词if用于条件和假设句中：1. If you study hard you will pass the exam.如果你努力学习，那么你就能通过这次考试。（真实条件）2. I shall not go out if you come tomorrow.如果你明天来，那我就不出去了。（这是真实条件。注意条件状语从句不用将来时态，要用现在时态来代替。在本情况下，主要靠主句谓语将来时态来判别）3. If I were not busy now, I should go to the meeting.要是我现在不忙，我就去开会了。（对现在事实相反的假设，谓语都用虚拟语气。）4. If he had not been busy yesterday, he would have come to the meeting.假如他昨天不忙，他早就来开会了。（对过去事实相反的假设，谓语都用虚拟语气。注意和上句表示形式不同。）二、连词if用于宾语从句，作“是否”解：1. I don’t know if the figures are accurate.我不知这些数字是否精确。2. He asked us if English is our major subject.他问了我们英语是不是我们的主要课程。注：用if和whether引导宾语从句时稍有差别。三、用以表示与事实相反的愿望：1. If he were in Tianjin now! 要是此刻他在天津多好啊！2. If I could only see them once more! 但愿我能再次见到他们就好了！3. If only he had known about it! 他当时知道这件事就好了！4. If only she arrives in time! 她若能及时到达就好了！四、if用于条件状语从句，其中有省略成分：1. That is important, if (it is )true.如果属实，那很重要。2. If (it is )not well managed, irrigation can be harmful.如果管理不善，灌溉还可能有害处。3. If (it is)necessary we shall put the meeting off.如果需要的话，我们将延期开会。五、if any，if ever和if anything的用法：if any和if ever含有“果真有”、“即使有”的意思，相当于if there is any at all。而if anything相当于if there is anything（或any difference），含有“如果有些什么”、“如果稍有区别的话”的意思。若主句有few，little，seldom，rarely等否定词，则上述从句为让步状语从句，否则为一般表示条件状语从句。例如：1. I think that there is little, if any, hope.（让步状语从句）我认为希望很小。（没按原文结构翻译）2. It occurs seldom. if ever.（让步状语从句）即使有其事，也并不多。3. True greatness has little, if anything, to do with rank or power.（让步状语从句）真正的伟大几乎与地位或权力无关。4. There are few, if any, English books.（让步状语从句）几乎没有什么英语书。（意指“英语书即便有，也是很少。”）5. Defects in the machine parts, if any, can be detected by this new-type instrument.（条件状语从句）机器零件内的缺陷，如果有的话，可用这种新型仪器检测。6. The question now is what energy, if anything, is required to bring about such a rotation.（条件状语从句）现在问题是，如果需要一种能量，究竟要哪种能量来产生这样的一种转动。六、if用于even if和as if中，分别引出让步状语从句或行为方式状语从句：1. Even if you fail, you will have gained experience.（让步状语从句）即便失败，你也可以取得些经验教训。2. Remember, science requires your whole life. And even if you had two lives to give, they would not be enough.（让步状语从句）要记住，科学需要你献出整个的一生，即使你有两次生命也还是不够的。（后句用虚拟语气，因人不可能有两次生命。）3. They work with such enthusiasm as if (或 as though)they never knew fatigue.（行为方式状语从句）他们如此热情地工作，似乎从来不知道疲倦。4. Light often behaves as if it were made of particles.（行为方式状语从句）光常常表现出好像它是由粒子组成的。注：由as if引出的行为方式状语从句往往要用虚拟语气。

if可以引导宾语从句，意思是 ＇是否‘；也可以引导条件状语从句，意思是 ’如果‘。
如：i don't know if he will come to see me.
i will go to Guangzhou if it doesn't rain tomorrow

if鐨勭敤娉
绛旓細if conj.[琛ㄧず鏉′欢, 鍋囪]濡傛灉, 瑕佹槸; 鍋囧 [琛ㄧず璁╂]铏界劧; 鍗充娇 鏄惁, 鏄笉鏄 (锛漺henever)鏃犺浣曟椂; 褰 [琛ㄧず鎰挎湜, 鎰熷徆]瑕佹槸...澶氬ソ If weather permits...(甯哥暐浣淚.W.P)濡傛灉澶╂皵濂界殑璇...I'll do it if I die in the attempt.鍗充娇浼氫抚鍛芥垜涔熻璇曚竴涓嬨侫sk if he is at...

if鐨勭敤娉,,,
绛旓細If鐨勭敤娉 涓銆佽繛璇峣f鐢ㄤ簬鏉′欢鍜屽亣璁惧彞涓細1. If you study hard you will pass the exam.濡傛灉浣犲姫鍔涘涔狅紝閭ｄ箞浣犲氨鑳介氳繃杩欐鑰冭瘯銆傦紙鐪熷疄鏉′欢锛2. I shall not go out if you come tomorrow.濡傛灉浣犳槑澶╂潵锛岄偅鎴戝氨涓嶅嚭鍘讳簡銆傦紙杩欐槸鐪熷疄鏉′欢銆傛敞鎰忔潯浠剁姸璇粠鍙ヤ笉鐢ㄥ皢鏉ユ椂鎬侊紝瑕佺敤鐜板湪鏃舵佹潵浠ｆ浛銆

if鐨勭敤娉褰掔撼鎬荤粨
绛旓細if鐨勭敤娉涓昏鏈変互涓嬪叚绉嶏細1銆 (琛ㄧず鏉′欢)if浠庡彞鐢ㄧ幇鍦ㄦ椂琛ㄧず灏嗘潵锛屼緥鍙ワ細If itdoesn鈥檛rain, we will go to the park next Sunday.2銆乮f杩樺彲浠ュ紩瀵艰姝ョ姸璇粠鍙ャ傝繖鏃秈f褰撲綔鈥滃嵆浣挎槸鈥濓紝鈥滆櫧璇粹濊В銆備緥濡傦細If she鈥檚 poor锛宎t least she鈥檚 honest.3銆乮f寮曞鏃堕棿鐘惰浠庡彞锛屽綋if鍋氣滃綋鈥濇垨鈥滄棤...

if鐢ㄦ硶 if鐢ㄦ硶鏈夊摢浜
绛旓細1銆佽繛璇 if 鐢ㄤ簬鏉′欢鍜屽亣璁惧彞涓備緥鍙ワ細If you study hard, you will pass the exam. 濡傛灉浣犲姫鍔涘涔狅紝閭ｄ箞浣犲氨鑳介氳繃杩欐鑰冭瘯銆2銆佽繛璇 if 鍙湁鍦ㄥ紩鍑哄璇粠鍙ユ椂鎵嶄綔鈥滄槸鍚︹濊锛屽彞鏈笉鑳藉姞 or, not 涔嬬被鐨勮瘝銆備緥鍙ワ細He asked us if English is our major subject. 浠栭棶浜嗘垜浠嫳璇槸涓嶆槸...

if鐨勭敤娉
绛旓細if 鑻 [ɪf] 缇 [ɪf]conj. 锛堣〃鏉′欢锛夊鏋滐紱锛堣〃鍋囪锛夎鏄紝鍋囧锛涙棤璁轰綍鏃讹紱铏界劧锛屽嵆浣匡紱锛堢敤浜庨棿鎺ョ枒闂級鏄惁锛涳紙鐢ㄤ簬绀艰矊闂锛夋槸鍚︼紱褰擄紝姣忔锛涳紙涓庢儏鎬佸姩璇嶈繛鐢級琛ㄥ杞姘旓紱杩欎笉鏄︹︼紝瑕佹槸鈥︹﹀濂斤紱鎴栬涓嶏紱灏辩畻锛涘敖绠 n. 鏉′欢锛岃鎯筹紱涓嶇‘瀹氱殑鎯呭喌 璇嶇粍鐭 as if...

if 鐢ㄦ硶鍙婂彞鍨
绛旓細1. if 鐢ㄤ簬鏉′欢鐘惰浠庡彞涓潵銆傚锛2. if only 鈥滆鏄︹.灏卞ソ浜嗏濓紱鈥滀絾鎰库︹︹3. if 鐢ㄤ簬铏氭嫙璇皵鐨勬潯浠剁姸璇粠鍙ヤ腑 4. what if 鈥 瑕佹槸鈥︹.鎬庝箞鍔烇紵5. as if 濂藉儚 6.if 鐢ㄤ簬瀹捐浠庡彞锛屸滄槸鍚︹

if鐨勭敤娉鏄粈涔,褰撹В閲婁负鏄惁鏃剁敤浠涔堟椂鎬
绛旓細if浣滀负浠庡睘杩炴帴璇嶏紝鏈変袱绉鐢ㄦ硶銆備竴銆佸仛鈥滄槸鍚︹濊В閲婏紝寮曞鍔ㄨ瘝鐨勫璇粠鍙ワ紝鍚庤窡闄堣堪鍙ョ殑璇簭锛岀浉褰撲簬涓鑸枒闂彞銆傚畠寮曞鐨勫彞瀛愶紝鎸夌収鏃堕棿鏉ラ夋嫨鏃舵併傚锛欻e asked if I had left with you, and I said no.浠栭棶鎴戞槸鍚﹀拰浣犱竴鍧楀効绂诲紑鐨勶紝鎴戣涓嶆槸銆侷 wonder if I might have a word with Mr ...

if鐨勭敤娉
绛旓細if鍙綔涓鸿繛璇嶏紝寮曞鏉′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椂銆備篃鍙敤浜庤櫄鎷熻姘斻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 ...

鑻辫涓if鐨勭敤娉,璋㈣阿鍚勪綅~\(鈮モ柦鈮)/~鍟
绛旓細涓銆if浣滀负杩炶瘝锛屽紩瀵兼潯浠剁姸璇粠鍙ワ紝瀹冭〃绀虹殑鎰忔濇槸鈥滃亣濡傗濃滃鏋溾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椂銆備緥濡傦細1. If itdoesn鈥檛rain, we will go to the park next Sunday. 濡傛灉澶╀笉涓嬮洦锛屼笅鍛ㄦ槦鏈熷ぉ鎴戜滑灏嗗幓鍏洯銆2. If you ask him锛宧e will help you锛...

if鐨勭敤娉 if鐨勭敤娉曟湁鍝簺
绛旓細涓銆if浣滀负杩炶瘝锛屽紩瀵兼潯浠剁姸璇粠鍙ワ紝琛ㄧず鈥滃亣濡傗濄佲滃鏋溾濈瓑鎰忔濄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椂銆備緥濡傦細If you ask him锛宧e will help you.濡傛灉浣犳眰浠栵紝浠栧皢浼氬府鍔╀綘銆備簩銆乮f鍙互寮曞璁╂鐘惰浠庡彞锛岃〃绀衡滃嵆浣挎槸鈥濄佲滆櫧璇粹濅箣鎰忋備緥濡傦細If I am wrong锛寉ou are...

扩展阅读：if公式怎么用 ... if引导的三种句型 ... if的用法归纳总结 ... if函数怎么用详细步骤 ... if函数三个条件怎么填 ... if only ... as soon as的用法 ... if的三种用法 ... if用法归纳口诀 ...