Over on Old Teachers Never Die… a couple of weeks ago Antony Shen asked:
Speaking of “subject-verb agreement”. I hope you don’t mind answering me a simple question (not directly related). With countable nouns, in scientific styled sentences, do you say “0.1 apple” or “0.1 apples“? (as in zero point two rather than one fifth of an …) Also, in the case of negative numbers, do you say “-1 apple” or “-1 apples“? Or shall I ask, what is the definition of “plural”? “greater than one” OR “anything other than one”?
To deal with your second question first: countable nouns form plurals; mass/uncountable nouns don’t. This gets a little more complicated because some nouns may be either countable or mass/uncountable, depending on how they are being used. “Wheat” for example may be both: ten kilos of wheat is uncountable; several types of wheat is also uncountable; there are several wheats used in this mix is countable.
OK, with countable nouns: I would say 0.1 apples for grammatical reasons, though I agree it is not logical! I guess you could say 0.1 of an apple just as you say one-tenth of an apple, but it seems we don’t. Interesting question.
What about “-1 apple(s)”? “-1″ (minus one) is less than “0” (zero). Since we say “zero apples” or “no apples”, and in the case of one less apple than nothing, should it be “-1 apples” or just “-1 apple”?
If the number one is used, whether it is +/-1, the following noun will be singular. So it would be -1 apple. We’re talking grammar, not logic; and yes we say zero apples, probably because zero is thought of as a number that is not one, even though zero is neither singular nor plural logically.
Thank you very much for the answer. In Mathematics (Number Theory), unity means 1 (one), and only the positive one, and there is only one unity. In grammar, it seems like there are two cases for singular nouns. If plural is defined as “any amount other than one”, then, zero is plural, as well as -1.
Unfortunately mathematical theory may have little correlation with grammar or usage. The concept of grammatical number is not a mathematical concept strictly, so the word one is always singular, whatever mathematical theory may hold. English probably treats zero as a plural because the grammar gives only two choices, and the word zero is not the word one: we also say, incidentally, there are no apples on the table (countable) but we say there is no rice on the table (uncountable). At least we don’t have to worry, as the French or the Italians do, whether apple, rice and table are masculine or feminine! And Chinese survives quite well without marking nouns as singular or plural, as I am sure you know.
Anyone want to contribute more ideas? I found it quite intriguing — but then perhaps I am strange…