How do you form the plural of nouns?

To form the plural of nouns, there are several rules that can be followed:

1. Most nouns simply add an "s" at the end to form the plural. For example, "cat" becomes "cats" and "book" becomes "books."

2. Nouns ending in "s," "x," "z," "ch," or "sh" usually add "es" to form the plural. For instance, "box" becomes "boxes" and "church" becomes "churches."

3. Nouns ending in "y" with a consonant before it change the "y" to "i" and add "es" to form the plural. For example, "city" becomes "cities" and "baby" becomes "babies."

4. Nouns ending in "y" with a vowel before it simply add an "s" to form the plural. For instance, "boy" becomes "boys" and "day" becomes "days."

5. Nouns ending in "f" or "fe" usually change the "f" or "fe" to "ves" to form the plural. For example, "leaf" becomes "leaves" and "knife" becomes "knives."

6. Some nouns have irregular plural forms and do not follow any specific rule. For instance, "child" becomes "children" and "man" becomes "men."

It is important to note that there are exceptions and irregularities in forming plurals, so it is always advisable to consult a dictionary or grammar guide for specific nouns.