2.A noun ending in a y preceded by a consonant makes the plural with -ies. 3.There are some irregular formations for noun plurals. Some of the most common ones are listed below. 4.Some nouns have the same form in the singular and the plural. Singular Plural sheep sheep fish fish species species aircraft aircraft 5.
Some nouns have a plural form but take a singular verb.
Athletics is good for young people. Linguistics is the study of language. Some nouns have a plural form and take a plural verb. My trousers are too tight. Her jeans are black.