Language Arts 600, Assignment 7, Nouns
Rule 4, Nouns ending in O
For singular nouns ending in o preceded by a vowel, the plural is formed by adding -s to the singular.
Rule 5, Nouns ending in F,FE or FF
Most singular nouns that end in f, fe, or ff form their plurals by adding -s to the singular form.
Rule 1, Basic rule
Plurals are normally formed by adding -s to the singular form.
Hyphenated compounds
The plurals are formed by making the chief element of the compound word plural. For example: father-in-law becomes fathers-in-law
Rule 6, Compound Nouns
When a compound noun is a single word, make the final element in the compound word plural as if it stood alone.
Rule 7, Compound nouns
When a compound noun is a single word, make the final element in the compound word plural as if it stood alone.
Rule 3, Nouns ending in Y
When a singular noun ends in y preceded by a consonant, the plural is formed by changing the y to i and adding -es to the singular.
Hyphenated compound that does not contain a noun as one of its chief elements
pluralize the final element, for example: hang-up becomes hang-ups
Rule 2, Nouns ending in S,SH,CH,X or Z
the plural is formed by adding -es to the singular