Rules regarding the formation of plural Nouns :

In English, we form the plurals of nouns by adding –s to the singular. Examples are given below.

There are several exceptions to this rule. Nouns ending in –s, -sh, -ch and –x, form their plurals by adding –es to the singular.

Examples are:

Most nouns ending in –o, generally form their plurals by adding –es.

Examples are:

Some singular nouns ending in –o, form their plurals by simply adding –s.

Examples are:

Nouns ending in a consonant + -y, form their plurals by changing that –y into –i and adding –es.

Most nouns ending in –f or –fe form their plurals by changing –f or –fe into v and adding –es.

There are several exceptions to this rule and the following nouns form their plurals by simply adding –s.

Examples

A few nouns form their plurals irregularly.

Examples are given below.

Some nouns have the singular and the plural alike. Examples are: swine, sheep, deer

The nouns dozen, score, pair, hundred and thousand do not have a plural form when they are used after a number.

The car cost me five thousand dollars. (NOT … five thousands dollars)

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