This document discusses plural nouns in English. It notes that plural nouns usually end in s or es and provide examples like birds and buses. It then provides a table to identify singular and plural nouns. The document goes on to explain common plural rules, such as adding -s, -ies, or -es depending on whether the noun ends in y, ch, s, sh, x or z. It also notes special cases where nouns ending in f or fe become -ves in the plural like leaf/leaves. Finally, it provides a list of nouns to practice making plural.