“if only” 和“only if"的用法和区别是什么？ only if 和 if only 有什么区别
if only&only if\u6709\u4ec0\u4e48\u533a\u522b\uff1f
only if\uff1a\u53ea\u6709\u3001\u9664\u975e,\u610f\u601d\u76f8\u5f53\u4e8eunless,\u4f46\u7528\u4e8e\u80af\u5b9a\u53e5,\u5f15\u5bfc\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\uff1aI will go only if you go with me.\u9664\u975e\u4f60\u8ddf\u6211\u4e00\u8d77\u8d70,\u5426\u5219\u6211\u5c31\u4e0d\u8d70\uff08\u53ea\u6709\u4f60\u8ddf\u6211\u4e00\u8d77\u8d70\u6211\u624d\u8d70\uff09.
\u6bd4\u8f83\uff1aunless,\u7528\u4e8e\u5426\u5b9a\u53e5\uff1aI won't go unless you go with me.
If only\uff1a\u53ea\u8981,\u5f15\u5bfc\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\uff1aIf only it clears up,we'll go.\u53ea\u8981\u5929\u4e00\u653e\u6674,\u6211\u4eec\u5c31\u8d70.\u8981\u662f\u2026\u2026\u5c31\u597d\u4e86,\u5f15\u5bfc\u72ec\u7acb\u53e5\uff1aIf only you had won the game!\u4f60\u8981\u662f\u8d62\u4e86\u8be5\u591a\u597d\u554a.
Only if \u7528\u4e8e\u53e5\u9996\uff0c\u7528\u5012\u88c5\u8bed\u5e8f\uff0cOnly if a teacher has given permission is a student allowed to enter this room. \u53ea\u6709\u5f97\u5230\u8001\u5e08\u7684\u5141\u8bb8\uff0c\u5b66\u751f\u624d\u80fd\u8fdb\u5165\u8fd9\u95f4\u6559\u5ba4\u3002
if only\uff1a \u4f46\u613f \u8868\u793a\u5bf9\u73b0\u5728\u548c\u5c06\u6765\u7684\u613f\u671b\uff0c\u6216\u4e0e\u8fc7\u53bb\u4e8b\u5b9e\u76f8\u53cd\u7684\u613f\u671b\u3002 If only it would stop raining \u771f\u5e0c\u671b\u96e8\u80fd\u505c\u3002
\u4e00\u3001if only\u7684\u7528\u6cd5\u3002if only\u540e\u9762\u8ddf\u7684\u662f\u865a\u62df\u8bed\u6c14\u7684\u53e5\u5b50\uff0c\u8868\u793a\u4e0e\u4e8b\u5b9e\u76f8\u53cd\u7684\u5047\u8bbe\u3002If only I had more money, I could buy some new clothes. \u8981\u662f\u6211\u6709\u66f4\u591a\u7684\u94b1\uff0c\u6211\u53ef\u4ee5\u4e70\u4e9b\u65b0\u8863\u670d\u3002If only he had arrived in time. \u8981\u662f\u4ed6\u80fd\u53ca\u65f6\u8d76\u5230\u5c31\u597d\u4e86\u3002If only I had known it, I wouldn't have troubled him. \u8981\u662f\u6211\u77e5\u9053\uff0c\u6211\u5c31\u4e0d\u4f1a\u9ebb\u70e6\u4ed6\u4e86\u3002If only that photograph weren't missing. \u8981\u662f\u90a3\u5f20\u7167\u7247\u6ca1\u4e22\u5931\u8be5\u591a\u597d\u3002\u4e8c\u3001only if\u7684\u7528\u6cd5\u3002only if\u540e\u9762\u8ddf\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\uff0c\u7528\u9648\u8ff0\u8bed\u6c14\uff0c\u540e\u9762\u7528\u90e8\u5206\u5012\u88c5\u53e5\uff0cbe\u52a8\u8bcd\u3001\u52a9\u52a8\u8bcd\u548c\u60c5\u6001\u52a8\u8bcd\u653e\u5728\u4e3b\u8bed\u4e4b\u524d\uff0c\u8868\u793a\u4e00\u79cd\u5145\u5206\u975e\u5fc5\u8981\u6761\u4ef6\uff0c\u610f\u601d\u662f\u53ea\u8981\u3002Only if you passed the entrance exam and became a college student, will I accept you as a friend.\u53ea\u8981\u4f60\u901a\u8fc7\u9ad8\u8003\uff0c\u6210\u4e3a\u5927\u5b66\u751f\uff0c\u6211\u5c31\u4f1a\u8ba4\u4f60\u4e3a\u670b\u53cb\u3002Only if we persist in carrying out the open door policy, will we achieve greater success in every field.\u53ea\u8981\u6211\u4eec\u575a\u6301\u6539\u9769\u5f00\u653e\uff0c\u6211\u4eec\u5c31\u80fd\u5728\u5404\u4e2a\u65b9\u9762\u53d6\u5f97\u66f4\u5927\u7684\u6210\u5c31\u3002
Only if\u548cif only \u7684\u7528\u6cd5\u533a\u522b\uff1a
\u4e00\u3001only if
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\u4e8c\u3001if only
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2\u3001 if only\u5e38\u5e38\u7528\u6765\u8868\u8fbe\u5f3a\u70c8\u7684\u613f\u671b\u6216\u9057\u61be\uff0c\u56e0\u6b64\uff0c\u4e3b\u8981\u7528\u5728\u865a\u62df\u8bed\u6c14\u4e2d\uff0c\u7528\u4ee5\u8868\u8fbe\u5f3a\u70c8\u7684\u613f\u671b\u6216\u975e\u771f\u5b9e\u6761\u4ef6\u3002\u5e38\u88ab\u8bd1\u4e3a\u201c\u4f46\u613f\u201d\u201c\u8981\u662f..\u8be5\u591a\u597d\u554a\u201d\u7b49\u3002
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I\u3001 only if\u5f15\u8d77\u7684\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\uff0c\u662f\u4e00\u4e2a\u5bf9\u201c\u6761\u4ef6\u201d\u9650\u5236\u66f4\u4e25\u7684\u201c\u9650\u5236\u6027\u6761\u4ef6\u72b6\u8bed\u4ece\u53e5\u201d\uff0c\u8868\u793a\u201c\u53ea\u6709.... (\u624d) ;\u53ea\u6709\u5728..\u7684\u65f6\u5019;\u552f\u4e00\u7684\u6761\u4ef6\u662f..\u201d \u7684\u610f\u601d;\u4e0e if\u5f15\u8d77\u7684\u4e00\u822c\u6761\u4ef6\u53e5\u76f8\u6bd4\uff0c\u5b83\u6709\u4e00\u79cd\u589e\u5f3a\u4e3b\u53e5\u8bed\u52bf\u7684\u4f5c\u7528\u30022\u3001 if on1\u5f15\u5bfc\u7684\u6761\u4ef6\u53e5,\u901a\u5e38\u7528\u6765\u8868\u793a\u8bf4\u8bdd\u4eba\u5bf9\u67d0\u4e8b\u6240\u5bc4\u4e88\u7684\u67d0\u79cd\u5f3a\u70c8\u613f\u671b\uff0c\u76f8\u5f53\u4e8eas longas\u3002\u5b83\u53ef\u4ee5\u72ec\u7acb\u4f7f\u7528\uff0c\u7528\u6765\u8868\u793a\u7531\u4e8e\u5ba2\u89c2\u6761\u4ef6\u9650\u5236,\u4e3a\u67d0\u4e8b\u4e0d\u5927\u53ef\u80fd\u6216\u5b8c\u5168\u4e0d\u53ef\u80fd\u5b9e\u73b0\u800c\u611f\u5230\u60cb\u60dc\u6216\u9057\u61be\u7684\u590d\u6742\u5fc3\u60c5\uff0c\u5e38\u7528\u865a\u62df\u8bed\u6c14\u3002
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\u5728\u4e66\u9762\u82f1\u8bed\u4e2d\uff0conly \u901a\u5e38\u76f4\u63a5\u7f6e\u4e8e\u88ab\u4fee\u9970\u8bcd\u4e4b\u524d\u3002\u4f46\u5728\u53e3\u8bed\u4e2d\uff0c\u7531\u4e8e\u53ef\u901a\u8fc7\u91cd\u8bfb\u6307\u793a\u4fee\u9970\u5bf9\u8c61\uff0c\u6545\u5176\u4f4d\u7f6e\u5e76\u4e0d\u592a\u91cd\u8981\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u767e\u5ea6\u767e\u79d1-ONLY
if only和only if的区别是用法不同，含义不同，侧重点不同，用法如下：
一、用法不同
1.if only
用法：if only 用于虚拟语气，它用来表达一个不可能实现的愿望或假设。
2.only if
用法：用于引导条件状语从句，比if所表达的语气更强烈。置句首可引起倒装。
二、含义不同
1.if only
释义：要是...就好了。
例句：If only you had told me you had a spare ticket for the show. 如果你告诉我，你多了一张演出票就好了。
2.only if
释义：仅仅如果。
例句：I'll do that, but only if we set a few rules. 我可以干，但我们得定几条规矩。
三、侧重点不同
1.if only
解析：if作为从属连词,可引导条件状语从句、让步状语从句和名词从句。
2.only if
解析：if可引导名词性从句,作“是否”解,常放在ask, doubt, know, learn, see, wonder等动词后。一般用在口语中,而且不能用于句首。
only if (用于句首,后接从句主谓倒装)只要;只有conj.只有当(只是在 ...的时候)
例句:Only if I get a job will I have enough money to go to school
这两个完全不同，那需要区别？
unless===if not
ONLY if===only when
Only if意为只有当 ......
例：Only if you study hard can you get good grades.一般后面的主句用倒装，中间不隔开。
unless是除非的意思
例:I won't go to the party unless invited.
if only，咱们在学校一般只学到它的一个含义。
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