if only

only if表示只有； if only则表示如果就好了。 If only也可用于陈述语气。If only＋过去式／过去完成式，only if后面倒装句用什么时态，要根据由only if组成的从句来。前后时态一致。Only if you study hard can you pass the exam.只有努力学习，你才能通过考试。

1、作副词的意思是：只，仅仅；不料 2、作形容词的意思是：唯一的，仅有的；最合适的 3、作连接词的意思是：但是；不过；可是 短语：1、only then 直到那时（后面的句子要倒装）2、if only 只要；要是…多好 3、only once 只有一次 4、only just 刚刚才；恰好 5、only too 非常；实在 6、...

if only 的意思是 要是...多好 +not就是 要是不是多好 意思就是肯定 英语很古怪的..

If I’d left sooner, I’d have been on time. 要是我早点动身，我就准时到了。If he had read any of those books he would have known the answer. 他假若看了这些书中的任何一本, 就知道答案了。(4) if only（但愿），as if（似乎，好像）也常与虚拟语气连用。如：If only I ...

1、提出将来会发生的事：主句：主语＋would/should/might/could＋动词原形；从句：should＋动词原形/were to＋动词原形；2、提出现在的条件： 主句：主语＋would/should/might/could＋动词原形；从句：动词过去式；例句：If he studied at this school, he would know the enviornment around the school ...

unless就相当于if+not only if强调这个条件是唯一的 这两个是条件句，要按照条件从句的规矩，该是条件句的就主将从现，该用虚拟的就用虚拟语气。only when是时间状语从句，按照时间状语从句来就行。

And after that the next 5 minutes will feel even easier. Or maybe you raise the bar to 10 minutes of work. Getting some actual work done on that task, if only for 5 minutes, gives you a rush of exhilaration. Making a game out of how much work you can get done in those 5 ...

(2) if only句式：if only 与 I wish一样，也是表示与事实相反的愿望的，其后所虚拟语气的时态与 wish后所接时态的情况相同。如：If only Tessa was here now. 要是特萨现在在这儿就好了。If only l knew the answer to your question. 我但愿知道你的问题的答案。(3) as if / as though...

翻译是：只有当，，，我们才能，，，。正如谚语所说，，，。我举个例子：Only if we pay more efforts on our study, can we go to the best university. Just as the saying goes, no pain no gains.只有我们付出努力才能考取最好的大学，正如谚语所说，没有付出就没有收获。希望能帮到你 ...

5. A toast to our friendship! 6. A happy journey to you! 7. Good luck to you! 句型[If only/But+主语+虚拟式谓语+其他] 1. If only Marx were still by my side to see this with his own eyes! 2. If only I had known then what I knew long afterwards! 3. Ah, if only it ...