English countable nouns have two numbers —the singularand the plural.
The main types of the plural forms of English nouns are as follows: .
I. 1. The general rule for forming the plural of English nouns is by adding the ending -s (-es) to the singular; -s is pronounced in different ways:
. [iz] after sibilants: noses, horses, bridges.
[z] after voiced consonants other than sibilants and after vowels: flowers, beds, doves, bees, boys.
[s] after voiceless consonants other than sibilants: caps, books, hats, cliffs.
1 On the use of articles with abstract nouns see Chapter II, § 8, 9, 10, 11.
2. If the noun ends in -s, -ss, -x, -sh, -ch, or -tch, the plural is formed by adding -es to the singular:
bus — buses box — boxes bench — benches
glass — glasses brush — brushes match — matches
3. If the noun ends in -y preceded by a consonant, */ is changed into / before -es.
fly —flies v
army — armies lady — ladies
In proper names, however, the plural is formed by adding the ending -s to the singular: Mary, Marys.
Note. — If the final -y is preceded by a vowel the plural is formed by simply adding -s to the singular.
day —days monkey — monkeys
play —plays toy —toys
key — keys boy — boys
4. If the noun ends in -o preceded by a consonant, the plural is generally formed by adding -es. Only a few nouns ending in -o preceded by a consonant form the plural in -s.
(c) One noun ending in [s] changes it into [z] (in pronunciation):
house [haus] — houses ['hauziz]
II. The plural forms of some nouns are survivals of earlier formations.
1. There are seven nouns which form the plural by changing the root vowel:
man — men woman — women foot — feet tooth — teeth
goose —geese mouse — mice louse — lice
2. There are two nouns which form the plural in -en:
ox — oxen child — children
Note. — The noun brother has, beside its usual plural form brothers, another plural form brethren, which is hardly ever used in colloquial language. It belongs to the elevated style and denotes people of the same creed and not relationship.
The noun .cow has, beside its usual plural form cows, a plural kine, which sometimes occurs in poetry.
3. In some nouns the plural form does not differ from the singular: deer, sheep, swine, fish, trout.
III. Some words borrowed from Latin or Greek keep their Latin or Greek plural forms: e. g. phenomenon, phenomena; datum, data; crisis, crises; stimulus, stimuli; formula, formulae; index, indices. Some of these nouns have acquired English plural forms: memorandums, formulas, indexes, terminuses, etc.
The tendency to use the foreign plural is still strong in the technical language of science, but in fiction and colloquial English there is an evident inclination to give to certain words the regular English plural forms in -s. Thus in some cases two plural forms are preserved (formulae, formulas; antennae, antennas).
IV. In compound nouns the plural is formed in different ways.
1. As a rule a compound noun forms the plural by adding -s to the head-word:
1. Trousers, spectacles, breeches, scissors, tongs, fetters. These are for the most part names of things which imply plurality or consist of two or more parts.
2. Billiards, barracks, works. These nouns may be treated as singulars. We may say: a chemical works, a barracks, etc.
3. Words like phonetics, physics, politics, optics, etc. are usually treated as singulars except in some special cases.
It was not practical politics! (Galsworthy)
All party politics are top dressing. (Galsworthy)
4. The word news is treated- as a singular.
. When she goes to make little purchases, there is no news for her. (Thackeray)
The newshe gave them was to be read in the lamentations. (Sabatini) ■
§ 7. Thecategory of case.
Case indicates the relations of the noun (or pronoun) to the other words in the sentence.
English nouns denoting living beings (and some nouns denoting lifeless things) have two cases, an uninflected form called the commoncase and an inflected form called the genitive case.
1. The genitive caseis formed by adding -'s (the apostrophe s) to the noun in the singular and only ' (the apostrophe) to plural forms ending in -s.
SINGULAR: a girl's book PLURAL: a girls' School
Note 1. — Nouns forming their plural by changing the root vowel take the apostrophe s in the plural. singular: a man's hat PLURAL: men's hats
Note 2. — Nouns ending in -s form the genitive case in two ways: Dickens' novels, Dickens's novels.
The pronunciation of the genitive case ending follows the same rules as the pronunciation of the plural ending:
[iz] after sibilants: prince's, judge's, witch's, etc.
[zj after voiced consonants other than sibilants and after vowels: boy's, man's, king's.
[s] after voiceless consonants other than sibilants: Smith's, count's, bishop's. ^
Note. — With nouns ending in -s and forming the genitive case in two ways (Dickens' novels, Dickens's novels) the ending is pronounced [iz] whether the letter s is written or - not.
2. Sometimes the apostrophe s may refer to a whole group of words (the group-genitive): Jane and Mary's room. The last word ' of the group need not even be a noun: I shall be back in an hour or two's time.
As to its use the genitive case falls under:
(A) The Dependent Genitive.
(B) The Absolute Genitive.
The Dependent Genitive is used with the noun it modifies and comes before it.
The Absolute Genitive may be used without any noun or be separated from the noun it modifies.