In ordinary conversation, only one has the same meaning as one and only one. The shorter phrase is used almost every situation. In mathematical logic, it's often desirable to make a distinction between zero or one and exactly one. In that situation one and only one is used to indicate that the count cannot be less than one or more than one.
P2. only but (also but only): (a) only, merely; (b) except only. Now poetic. Source: Oxford English Dictionary (login required) Below are some only but examples from the Corpus of Contemporary American English. Swap in only or nothing but for only but to see: Ultimately, there is only but one choice for you, no? To consume the entire pint. TV ...
Which is grammatically correct? I can only do so much in this time. or I can do only so much in this time.
grammaticality - Correct position of "only" - English Language & Usage ...
Yes, the person would yell once you fell, but only if you fell. "If" and "Only if" used in the same way means the same thing, except that "only if" is more forceful, more compelling. "If and only if" is the most obligatory of the three, in which the action has been distinguished and emphasised, "If, and only if " It's the most forceful of the three
meaning - "If" vs "Only if" vs "If and only if" - English Language ...
I'd use the one with the "not only/but/also" construct: Thanks to his remarkable performance on the SAT, not only was he accepted into Harvard, but he was also given a full scholarship. "not only [fact A] but [fact B]". When you start with "not only" you're indicating that two facts A and B will be presented. Fact A is something that is already good enough (or bad enough) by itself and fact B ...