even if和 whether在用法上有什么区别?详细一点。 If 和Whether的区别（越多越好，最好附例子）
if\u4e0ewhether\u5728\u7528\u6cd5\u4e0a\u6709\u4ec0\u4e48\u533a\u522bwhether\u548cif\u7684\u7528\u6cd5\u533a\u522b
whether\u4e0eif\u4f5c\u201c\u662f\u5426\u201d\u8bb2,\u5728\u7528\u6cd5\u4e0a\u6709\u76f8\u540c\u4e4b\u5904,\u4e5f\u6709\u4e0d\u540c\u4e4b\u5904.
\u4e00\u3001\u76f8\u540c\u4e4b\u5904.
1.whether\u548cif\u90fd\u80fd\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5,\u5e38\u7f6e\u4e8esee,ask,learn,tell,wonder,doubt,find out\u7b49\u52a8\u8bcd\u4e4b\u540e.
\u5982\uff1aHe asked me whether/is I could help him.I want to know whether/if he lives there.
2.whether\u548cif\u90fd\u53ef\u7528it\u4f5c\u5f62\u5f0f\u4e3b\u8bed\u4ece\u53e5\u4e2d.\u5982\uff1ait's uncertain whether/if he'll come this evening.
3.\u5728be uncertain/doubtful\u4e4b\u540e,\u5e38\u7528whether\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5,\u6709\u65f6\u4e5f\u53ef\u4ee5\u7528if,\u5982\uff1aWe are uncertain whether/if Mary will come.
\u4e8c\u3001\u4e0d\u540c\u4e4b\u5904.
1.whether\u53ef\u7f6e\u4e8e\u53e5\u9996\u5f15\u5bfc\u4e3b\u8bed\u4ece\u53e5,\u800cif\u4e0d\u80fd.\u5982\uff1a___the 2000 Olympic Games will be in Beijing is not known yet.A.whether B.If C.Whether D.That \u7b54\u6848\u662fC.
2.whether\u53ef\u7528\u5728\u4ecb\u8bcd\u4e4b\u540e,\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5,\u800cIf\u5219\u4e0d\u80fd.\u5982\uff1aSuccess depends on whether we make evough effort.
3.whether\u53ef\u5f15\u5bfc\u8868\u8bed\u4ece\u53e5,if\u5219\u4e0d\u80fd.\u5982\uff1aThe puestion is whether it is not worthdoing.
4.\u5728\u540d\u8bcd\u4e4b\u540e\u5f15\u5bfc\u540c\u4f4d\u8bed\u4ece\u53e5\u65f6,\u7528whether\u800c\u4e0d\u7528if.\u5982\uff1aThe puestion whether the students answered correctly should be decided by the teacher.
5.whether\u540e\u53ef\u63a5\u4e0d\u5b9a\u5f0f,\u800cif\u4e0d\u80fd.\u5982\uff1aPlease tell us whether to go or stay here.
6.\u5728\u6709\u4e9b\u52a8\u8bcd\uff08\u5982discuss\uff09\u4e4b\u540e,\u53ea\u80fd\u7528whether,\u800c\u4e0d\u7528if\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5.\u5982\uff1aWe discussed whether we should close the shop.
7.\u5728\u5f15\u5bfc\u5426\u5b9a\u6982\u5ff5in\u5bbe\u8bed\u4ece\u53e5\u65f6,\u53ea\u80fd\u7528if,\u800c\u4e0d\u7528whether.\u5982\uff1ahe asked me if I hadn't finished my work.
if\u548cwhether\u7528\u6cd5
\u4f5c\u8005\uff1a \u6765\u6e90\uff1a\u4e92\u8054\u7f51 \u66f4\u65b0\u65e5\u671f\uff1a2005-05-06
if\u548cwhether\u90fd\u53ef\u8bd1\u4e3a\"\u662f\u5426\"\uff0c\u4e8c\u8005\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5\u65f6\u901a\u5e38\u53ef\u4ee5\u4e92\u76f8\u66ff\u6362\uff0c\u53e3\u8bed\u4e2d\u591a\u7528if\u4ee3\u66ffwhether\u3002\u4f8b\u5982\uff1aAsk if/whether he plans to come to the meeting. \u800c\u4ee5\u4e0b\u51e0\u79cd\u60c5\u51b5\u4e2d, \u53ea\u80fd\u7528whether:
1. \u5f3a\u8c03\u4e24\u65b9\u9762\u7684\u9009\u62e9\uff0c\u7279\u522b\u662f\u53e5\u4e2d\u6709or not\u65f6\u3002\u5982\uff1a
Let me know whether you can come or not.
2. \u5bbe\u8bed\u4ece\u53e5\u524d\u7f6e\u65f6\u3002\u5982\uff1a
Whether this is true, I can\'t say.
3. \u5f15\u5bfc\u4e3b\u8bed\u3001\u8868\u8bed\u3001\u540c\u4f4d\u8bed\u4ece\u53e5\u65f6\u3002\u5982\uff1a
Whether the football game will be played depends on the weather. \uff08\u4e3b\u8bed\u4ece\u53e5\uff09
The question is whether he can do it. \uff08\u8868\u8bed\u4ece\u53e5\uff09
The question whether we should go with them must be decided at once. \uff08\u540c\u4f4d\u8bed\u4ece\u53e5\uff09
4. \u5728\u4ecb\u8bcd\u4e4b\u540e\u4f5c\u4ecb\u8bcd\u7684\u5bbe\u8bed\u65f6\u3002\u5982\uff1a
I haven\'t settled the question of whether I\'ll go back home.
5. \u5728\u4e0d\u5b9a\u5f0f\u524d\u4e0e\u4e0d\u5b9a\u5f0f\u4e00\u8d77\u7ec4\u6210\u8bcd\u7ec4\u65f6\u3002\u5982\uff1a
Whether to go or stay is still a question.
6. \u5728discuss, decide \u7b49\u52a8\u8bcd\u540e\u4f5c\u5bbe\u8bed\u65f6\u3002\u5982\uff1a
We discussed whether we should go there by plane.
\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff1a if\u8fd8\u53ef\u4ee5\u5f15\u5bfc\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\uff0c\u662f\"\u5047\u5982\uff1b\u5982\u679c\"\u4e4b\u610f\uff0c\u800cwhether\u53ef\u4ee5\u5f15\u5bfc\u8ba9\u6b65\u72b6\u8bed\u4ece\u53e5\uff0c\u662f\"\u4e0d\u7ba1\uff1b\u65e0\u8bba\" \u4e4b\u610f\u3002\u5982\uff1a
If you ask him, he will help you.
I shall go, whether you come with me or stay at home.
\u4e00\u3001if\u6216whether\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5\u65f6\uff0c\u4f5c\u201c\u662f\u5426\u201d\u8bb2\uff0c\u5e38\u653e\u5728\u52a8\u8bcdask \u3001see \u3001say \u3001know\u548cfind out\u7b49\u540e\u9762\u3002\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c\u4e24\u8005\u5e38\u53ef\u6362\u7528\uff0c\u5728\u53e3\u8bed\u4e2d\u591a\u7528if\u3002\u5982\uff1a
\u4f8b1 Nobody knows whether (if) it will rain tomorrow. \u6ca1\u6709\u4eba\u77e5\u9053\u660e\u5929\u662f\u5426\u4e0b\u96e8\u3002
\u4f8b2 Lucy asked whether (if) they had a cotton sweater .\u9732\u897f\u95ee\u4ed6\u4eec\u662f\u5426\u6709\u68c9\u5236\u7684\u7f8a\u6bdb\u8863\u3002
\u4e8c\u3001if\u6216whether\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5\u65f6\uff0c\u8981\u6ce8\u610f\u4e09\u4e2a\u65b9\u9762\uff0c\u5373\u8fde\u8bcd\u3001\u8bed\u5e8f\u548c\u65f6\u6001\u3002
1 if\u6216whether\u4e0d\u80fd\u548cthat \u6216\u5176\u5b83\u8fde\u8bcd\uff08\u526f\u8bcd\uff09\u540c\u65f6\u4f7f\u7528\uff0c\u4e5f\u4e0d\u80fd\u7701\u53bb\u3002\u5982\uff1a
\u4f8b3 \u6211\u4e0d\u77e5\u9053\u4ed6\u4eca\u5929\u662f\u5426\u4f1a\u6765\u3002
[\u8bef] I don\u2019t know that if(whether) he will come here today .
[\u6b63] I don\u2019t know if(whether) he will come here today .
\u4f8b4\u4ed6\u8d70\u8fc7\u6765\u770b\u770b\u732b\u662f\u5426\u51fa\u4e86\u6bdb\u75c5\u3002
[\u8bef] He came to see what if (whether) there was wrong with his cat .
[\u6b63] He came to see if (whether) there was wrong with his cat .
2 if\u6216whether\u5f15\u5bfc\u7684\u5bbe\u8bed\u4ece\u53e5\u65f6\uff0c\u867d\u5177\u6709\u7591\u95ee\u610f\u4e49\uff0c\u4f46\u4ece\u53e5\u8bed\u5e8f\u5e94\u7528\u9648\u8ff0\u53e5\u8bed\u5e8f\u3002\u5982\uff1a
\u4f8b5 Did you know the way to the hospital ? The old woman asked me .
The old woman asked me .if (whether) I knew the way to the hospital .\u8001\u5987\u4eba\u95ee\u6211\u662f\u5426\u77e5\u9053\u53bb\u533b\u9662\u7684\u8def\u3002
3 if\u6216whether\u5f15\u5bfc\u7684\u5bbe\u8bed\u4ece\u53e5\u5e94\u548c\u4e3b\u53e5\u7684\u65f6\u6001\u4fdd\u6301\u4e00\u81f4\u3002\u5373\u4e3b\u53e5\u4e3a\u4e00\u822c\u73b0\u5728\u65f6\uff0c\u4ece\u53e5\u7528\u4efb\u4e00\u79cd\u65f6\u6001\uff1b\u4e3b\u53e5\u4e3a\u4e00\u822c\u8fc7\u53bb\u65f6\uff0c\u4ece\u53e5\u5219\u7528\u8fc7\u53bb\u65f6\u4e2d\u7684\u4efb\u4e00\u79cd\u65f6\u6001\u3002\u5982\uff1a
\u4f8b6 I don\u2019t know if (whether) he has come here . \u6211\u4e0d\u77e5\u9053\u4ed6\u662f\u5426\u6765\u8fc7\u8fd9\u513f\u3002
\u4f8b7 Tom asked if (whether) I had read the book . \u6c64\u59c6\u95ee\u6211\u662f\u5426\u770b\u8fc7\u8fd9\u672c\u4e66 \u3002
\u4e09\u3001if\u548cwhether\u7684\u533a\u522b\uff1a
1 \u5728\u52a8\u8bcd\u4e0d\u5b9a\u5f0f\u4e4b\u524d\u53ea\u80fd\u7528whether \u3002\u5982\uff1a
\u4f8b8 I can\u2019t decide whether to stay. \u6211\u4e0d\u80fd\u51b3\u5b9a\u662f\u5426\u7559\u4e0b\u3002
2 \u5728whether \u2026\u2026 or not \u7684\u56fa\u5b9a\u642d\u914d\u4e2d\u3002\u5982\uff1a
\u4f8b9 I want to know whether it\u2019s good news or not . \u6211\u60f3\u77e5\u9053\u662f\u5426\u662f\u597d\u6d88\u606f\u3002
3 \u5728\u4ecb\u8bcd\u540e\uff0c\u53ea\u80fd\u7528whether\u3002\u5982\uff1a
\u4f8b10 His father is worried about whether he lose his work . \u4ed6\u7684\u7236\u4eb2\u62c5\u5fc3\u662f\u5426\u4f1a\u5931\u53bb\u5de5\u4f5c\u3002
4\u5bbe\u8bed\u4ece\u53e5\u653e\u5728\u53e5\u9996\u8868\u793a\u5f3a\u8c03\u65f6\uff0c\u53ea\u80fd\u7528whether \u3002\u5982\uff1a
\u4f8b11 Whether they can finish the work on time is still a problem . \u4ed6\u4eec\u662f\u5426\u80fd\u51c6\u65f6\u5b8c\u6210\u8fd9\u9879\u5de5\u4f5c\u8fd8\u662f\u4e2a\u95ee\u9898\u3002
5\u7528if\u4f1a\u5f15\u8d77\u6b67\u4e49\u65f6\uff0c\u53ea\u7528whether\u3002\u5982\uff1a
\u4f8b12 Could you tell me if you know the answer ?
\u8fd9\u53e5\u8bdd\u6709\u4e24\u79cd\u610f\u601d\uff1a\u201c\u4f60\u80fd\u544a\u8bc9\u6211\u662f\u5426\u77e5\u9053\u7b54\u6848\u5417\uff1f\u201d\u6216\u201c\u5982\u679c\u4f60\u77e5\u9053\u7b54\u6848\uff0c\u8bf7\u544a\u8bc9\u6211\uff0c\u597d\u5417\uff1f\u201d\u3002\u5982\u7528whether\u53ef\u907f\u514d\u6b67\u4e49\u3002304929024
应该是if 和whether/even if 和even though和even if 的区别
先说说if 和whether/even if
一、引导宾语从句,一般既可用whether也可用if.但
1 or not放在whether之后时,只能用whether不用if.
I don’t know whether or not he will come. 我不知道他是不是回来.
注1：如果or not放在whether所引导的从句句尾,则可以用if来替换.
I don’t know whether/if he will come or not.我不知道他是不是回来.
2 在强调任意选择时,用whether…or,此时不用if替换whether.
He asked me whether I wanted to go there by train or by bus.他问我是想乘火车还是坐公共汽车去那里.
注：whether和or一起还有“不管”之意,引导让步状语从句.
Whether he drives or takes the train, he will be here on time.不管开车来还是乘火车来,他都会准时到.
3 虽引导宾语从句,但为了强调宾语部分,也可把从句放在句首,此时只用whether不用if.
Whether he will come I am not sure.他是不是来我拿不准.
4 从句作介词宾语时只用whether不用if.
It depends on whether it will be fine.那得看是不是晴天.
5 作discuss等动词的宾语时,用whether不用if.
We discussed whether we should close the shop.我们讨论是不是该关掉商店.
6 句子中有if引导的条件句,如再有表示“是否”的宾语从句,用whether不用if.
He asked me whether I’d move to New York if I got the job.他问我如果我得到那份工作是否会搬家到纽约.
7 容易产生歧义时用whether不用if来表示“是否”.
Please let me know if you need help. 如果你需要帮助请告诉我.或：请告诉我你是否需要帮助.对比：Please let me know if you need help.请告诉我你是否需要帮助.
8 如果宾语从句为否定句时,则只用if不用whether.
I don’t know if it won't rain tomorrow..我不知道明天是不是会下雨.
二、在引导主语从句、表语从句、同位语从句时一般用whether不用if.如：
⑴Whether it is true remains a question.(主语从句)那是不是真的还是个问题.
⑵The question is whether it is true.(表语从句)问题是是不是真的.
⑶We have a doubt whether it is true.(同位语从句) 我们怀疑那是不是真的.
注:whether引导主语从句放在主句之后时可用if来代替.
It is unclear whether/if he likes the present.他是不是喜欢那个礼物还不清楚.
三、用在动词不定式之前时用whether不用if.
I don’t know whether to go there at once. 我不知道是不是该立刻去那里.
even though 和 even if 均可用于引导让步状语从句，其细微区别是：
1. even if 引导的从句是往往是假设性的，相当于汉语的“即使”“纵然”“就算”“哪怕”。如：
They’ll stand by you even if you don’t succeed. 即使你不成功，他们也会支持你。
Even if I have to walk all the way I’ll get there. 即使我得一路走着去，我也要走到那里。
Even if it rains tomorrow, we won’t change our plan. 即使明天下雨，我们也决不改变计划。
For my part, I plan to go to the party even if you decide not to go. 至于我，即使你决定不去参加晚会我也会去的。
Even if you saw him pick up the money, you can’t be sure he stole it. 就算你看见是他拾起的钱，你也不能肯定钱就是他偷的。
正因为even if从句的内容通常是假设性的，所以有时还可用于虚拟语气；这样用的even if 与单独使用的if比较接近。如：
Even if he had the money, he wouldn’t buy it. 他即使有钱也不会买它。
I would have married her even if she had been penniless. 即使她身无分文，我也会和她结婚。
2. even though 引导的从句内容往往是真实的，主要用于引出不利用于主句情况的信息，相当于汉语的“尽管”“虽然”。如：
He went out even though it was raining. 尽管在下雨，他还是出去了。
Even though it’s hard work, I enjoy it. 虽然工作艰苦，我还是很喜欢。
He’s the best teacher even though he has the least experience. 他尽管经验最少，但教得最好。
Even though I didn’t know anybody at the party, I had a nice time. 尽管这次聚会上我谁也不认识，我也玩得挺痛快。
这样用的even though与though或although的意思比较接近，许多时候可以互换（注意：英语可以说though和even though，但不能说even although）。如：
Even though [Thought, Although] I felt sorry for him, l was secretly pleased tha t he was having difficulties. 虽然我为他感到惋惜，但对他的困难却暗自高兴。
Even though [Thought, Although] we all tried our best, we lost the game. 虽然我们已尽了最大的力量，但还是输了。
3. 不过，在实际语言运用中，even if与even though有时也可不加区别地混用。如：
Even if [Even though] she laughs at him, he likes her. 尽管她嘲笑他，他还是很喜欢她。
We thoroughly understand each other, even if [even though] we don’t always agree. 我们彼此非常了解，虽然有时候也有一些分歧。
Whether一般和or not一起用
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