If not only, why use one?
'cause you are one.
The Uses of One
As a determiner, the word
one is sometimes used before a proper noun to designate, particularly, this person: "He delivered the package to
one Ronald Pepin of Colchester." The article "a" will also function in that position for the same purpose.
Sometimes we use the word
one as an adjective, as in "I'll have just
one scoop of ice-cream," and we seldom have trouble with that usage. But we also use
one as a pronoun, and this is where
one becomes surprisingly complex.
Sometimes the pronoun
one functions as a numerical expression:
- Those are lovely scarves. I think I'll buy one.
- One is hardly enough.
- One is purple, the other green.
- The three brothers get along quite well; in fact they adore one another.
- One of the senators will lead the group to the front of the capitol.
- The yellow car is fast, but I think the blue one will win.
As a pronoun,
one can also function in an impersonal, objective manner, standing for the writer or for all people who are like the writer or for the average person or for all people who belong to a class. In the United States,
one sometimes has a literary or highfalutin feel to it; the more it is used, the more pretentious it feels. In British English, the use of the impersonal or generic
one is more commonplace and has no such stigma. In the U.S.,
one is often replaced by
you.
- One would think the airlines would have to close down.
- One would [You'd] think the inner dome of heaven had fallen.
- The young comedian was awful; one felt embarrased for him.
- If one fails, then one must try harder next time.
When the pronoun
one is used in the numerical sense, a different pronoun can be used in a subsequent reference.
- We watched as one [of the ospreys] dried its feathers in the sun.
- One [driver] pulled her car over to the side.
However, it is generally regarded as a bad idea to mix the impersonal or generic pronoun
one with another pronoun, especially in the same sentence, as in "If one fails, then
he/you must simply try harder."
One's Reflexive and Possessive Forms
In the United States, the possessive and reflexive forms of
one —
one's and
oneself — are often replaced by other pronoun forms. In British English, they are commonplace:
- One must be conscientious about one's dental hygiene.
In the U.S. that
one's is apt to be replaced by a third-person "his" or (more informally) a second-person "your":
- One must learn from one's [or his] mistakes.
- One must be conscientious about one's [or his] dental hygiene.
- One must be conscientious about your dental hygiene.
In formal writing, the use of
your in that last sentence — in either American or British English — would be regarded as too casual or even sub-standard. On the other hand, the problem with using "his" is obvious: it runs counter to the tendency to remove gender bias from one's language as much as possible. Thus, even in American English, this mixture of "one" with "he/his/him" is slowly disappearing.*
Oneself is used in formal writing and speech as the proper reflexive form of
one:
- If one slipped on this icy walk, one could hurt oneself badly.
Notice there is usually no apostrophe used in the spelling of
oneself. The construction
one's self is used to refer to the concept of self (in psychology, for instance): "One's self, according to Freud, is defined by the interactions of the id, the ego, and the super-ego."
The Plural of One
As a singular numerical pronoun, we don't have trouble with
one: "Those donuts look delicious; I think I'll pick this
one." But what if I want two donuts? It is possible, sometimes, to pluralize
one:
- I really like the chocolate ones.
- The ones with chocolate frosting have cream fillings.
- Are these the ones you want?
- Do you want these ones?
When the word
ones is preceded by a plural determiner (like
these), we usually drop the
ones and the determiner turns into a
demonstrative pronoun: "Do you want
these?"
The phrases "one in [plural number]" and "more than one" always take a singular verb:
- One in four dentists recommends this toothpaste.
- One out of every five instructors gets this question wrong.
- There is more than one reason for this.
- More than one lad has lost his heart to this lass.
The "one" in the phrase "more than one" apparently controls the number of the verb. It is probably wise not to attempt to divine some of the mysteries of the English language.
One of those [plural noun] that is/are …
"One is one and all alone and ever more shall be so," goes the old Christmas song, but the fact that the singular
one needs a singular verb can lead to confusion. In a recently published collection of language columns by William Safire,
No Uncertain Terms, he wrote the following sentence (page 336):
"Conduct unbecoming an officer and a gentleman" is one of those phrases that sounds as if it comes out of Kipling.
The sentence caused considerable stir (as such things go), for the verb "sounds" should really relate to the plural "phrases," not the singular "one." The sentence should probably read (underlining things for our purpose):
"Conduct unbecoming an officer and a gentleman" is one of those
phrases that
sound as if
they came out of Kipling.
The rare device for figuring out which verb to use in this construction is as follows: turn the sentence inside out:
Of those phrases that sound as if they came out of Kipling, "conduct unbecoming an officer and a gentleman" is one.
In this situation, the subject of the subordinate clause — usually a
who or a
that — will refer to the plural noun in the preceding prepositional phrase (not the
one before it) and require a plural verb to follow.
There is a possible exception, however. In Burchfield's
New Fowlers*, we find this example:
"Don't you think," said Bernard, "that Hawaii is one of those places that was always better in the past." (from David Lodge, 1991; my underline)
Burchfield adds, "A plural verb in the subordinate clause is recommended unless particular attention is being drawn to the uniqueness, individuality, etc., of the one in the opening clause." In an earlier note, Burchfield writes: "Exceptions [to the rule that we use the plural verb] occur when the writer or speaker presumably regards one as governing the verb in the subordinate clause," and he gives another two or three examples, including "I am one of those people who wants others to do what I think they should."