除了discuss、decide后用whether，还有哪些词不用if？ 为何后面可以用whether但是不能用if？
\u5728\u54ea\u4e9b\u52a8\u8bcd\u540e \u901a\u5e38\u53ea\u7528 whether\u800c\u4e0d\u7528if\u82e5\u662f\u9ad8\u8003\u7684\u5b66\u751f \u53ea\u8981\u8bb0\u5f97 \u540e\u9762or not \u524d\u9762\u5c31\u7528whether\uff08\u6216\u6709\u660e\u663e\u7684\u9009\u62e9\u53e3\u6c14\u65f6 \uff09 \u524d\u9762\u662f\u4ecb\u8bcd \u540e\u9762\u5c31whether\u53e5\u9996\u7528whether\uff08\u4e3b\u8bed\u4ece\u53e5\uff09is\u540e\u8ddfwhether\uff08\u8868\u8bed\u4ece\u53e5\uff09whether\u548cif\u7684\u7528\u6cd5\u533a\u522b\u3000whether\u4e0eif\u4f5c\u201c\u662f\u5426\u201d\u8bb2\uff0c\u5728\u7528\u6cd5\u4e0a\u6709\u76f8\u540c\u4e4b\u5904\uff0c\u4e5f\u6709\u4e0d\u540c\u4e4b\u5904\u3002
\u3000\u3000\u4e00\u3001\u76f8\u540c\u4e4b\u5904\u3002
\u3000\u30001.whether\u548cif\u90fd\u80fd\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5\uff0c\u5e38\u7f6e\u4e8esee,ask,learn,tell,wonder,doubt,find out\u7b49\u52a8\u8bcd\u4e4b\u540e\u3002
\u3000\u3000\u5982\uff1aHe asked me whether/is I could help him. I want to know whether/if he lives there.
\u3000\u30002.whether\u548cif\u90fd\u53ef\u7528it\u4f5c\u5f62\u5f0f\u4e3b\u8bed\u4ece\u53e5\u4e2d\u3002\u5982\uff1a it's uncertain whether/if he'll come this evening.
\u3000\u30003.\u5728be uncertain/doubtful\u4e4b\u540e\uff0c\u5e38\u7528whether\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5\uff0c\u6709\u65f6\u4e5f\u53ef\u4ee5\u7528if\uff0c\u5982\uff1a We are uncertain whether/if Mary will come.
\u3000\u3000\u4e8c\u3001\u4e0d\u540c\u4e4b\u5904\u3002
\u3000\u30001.whether\u53ef\u7f6e\u4e8e\u53e5\u9996\u5f15\u5bfc\u4e3b\u8bed\u4ece\u53e5\uff0c\u800cif\u4e0d\u80fd\u3002\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\u3002
\u3000\u30002.whether\u53ef\u7528\u5728\u4ecb\u8bcd\u4e4b\u540e\uff0c\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5\uff0c\u800cIf\u5219\u4e0d\u80fd\u3002\u5982\uff1a Success depends on whether we make evough effort.
\u3000\u30003.whether\u53ef\u5f15\u5bfc\u8868\u8bed\u4ece\u53e5\uff0cif\u5219\u4e0d\u80fd\u3002\u5982\uff1a The puestion is whether it is not worthdoing.
\u3000\u30004.\u5728\u540d\u8bcd\u4e4b\u540e\u5f15\u5bfc\u540c\u4f4d\u8bed\u4ece\u53e5\u65f6\uff0c\u7528whether\u800c\u4e0d\u7528if\u3002\u5982\uff1a The puestion whether the students answered correctly should be decided by the teacher.
\u3000\u30005.whether\u540e\u53ef\u63a5\u4e0d\u5b9a\u5f0f\uff0c\u800cif\u4e0d\u80fd\u3002\u5982\uff1a Please tell us whether to go or stay here.
\u3000\u30006.\u5728\u6709\u4e9b\u52a8\u8bcd\uff08\u5982discuss\uff09\u4e4b\u540e\uff0c\u53ea\u80fd\u7528whether\uff0c\u800c\u4e0d\u7528if\u5f15\u5bfc\u5bbe\u8bed\u4ece\u53e5\u3002\u5982\uff1a We discussed whether we should close the shop.
\u3000\u30007.\u5728\u5f15\u5bfc\u5426\u5b9a\u6982\u5ff5in\u5bbe\u8bed\u4ece\u53e5\u65f6\uff0c\u53ea\u80fd\u7528if\uff0c\u800c\u4e0d\u7528whether.\u5982\uff1ahe asked me if I hadn't finished my work.
\u7b80\u5355\u7684\u8bf4\u3001whether\u53ef\u4ee5\u653e\u5728\u4ecb\u8bcd\u540e\u9762\u4f5c\u5bbe\u8bed\u3001\u800cif \u4e0d\u53ef\u4ee5\u3001 \u8bb0\u4f4f\u8fd9\u4e00\u70b9\u5c31\u53ef\u4ee5\u4e86\u53e6\u5916\u8865\u5145\uff1aif\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\u3002
除了discuss之外，advise, choose, consider之后只可使用whether表达“是否”，而不可用if。decide之后可以使用if, whether表达是否。
不是看单词的，是看句式及位置
①whether引导主语从句在句首时；
②宾语从句放在句首表示强调时，只能用whether；
③引导表语从句，只能用whether；
④引导介词宾语时,只能用whether；
⑤if与whether都可以与or not连用，但后面紧跟着or not时只能用whether；
⑥后接动词不定式时，用whether；
⑦用if会引起歧义时，只用whether；
⑧whether可引导同位语从句，if不能引导同位语从句。
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绛旓細銆愯В鏋愩 B decide:鍐冲畾;determine:涓嬪喅蹇,鍋氬喅瀹;discuss:璁ㄨ;figure:璁や负,浠ヤ负銆傛牴鎹彞鎰忎互鍙婂悗闈㈢殑should devote鍙煡B椤规纭 18.銆愮炕璇戙 鍙茶拏澶墠澶╅個璇锋垜鍘诲弬鍔犲浼,鎴戝緢楂樺叴鍦版帴鍙椾簡浠栫殑閭璇枫 銆愯В鏋愩慉 accept:鎺ュ彈,鍚屾剰(閭璇,寤鸿绛);promise:鍏佽,璁歌;permit.鍏佽,鍑嗚;receive:鏀跺埌,鎺ュ埌(淇,鍖...
绛旓細5)鍔ㄨ瘝discuss, decide鐨勫璇粠鍙ユ椂銆3. 杩炴帴浠ｈ瘝what, who, whose绛夊紩瀵肩殑瀹捐浠庡彞銆俆ell me what you want.Do you know who will come at the meeting?娉ㄦ剰锛歸ho, whom鎸夌収浼犵粺璇硶锛屼粠鍙ヤ腑who鎵鍙栦唬鐨勫悕璇嶅鏋滄槸瀹捐搴旂敤瀹炬牸whom锛屼絾鍦ㄥ彛璇腑甯哥敤who锛屽锛欴o you know whom (who) he will ...
