Grade 5 | English | Singular/Plural, Genders and Singular and Plural, Olympiad, CBSE, ICSE, SOF, ITO
Rule 1: For some words 's' is added at the last to make them plural.
Rule 2: Add 'es' for noun ending in ch, s, x sounds.
IMP: Exception to the rule: roof. The plural of roof is roofs and not rooves.
Rule 3: Some words remain same in plural form.
Imp rule and Exception: Fish is used for the same type of many fish. Fishes is used when types are different.
Some other plural forms:
No fixed rule - When "y" is at the last then in some words "ies" is used while in others simply "s" is added at the last.
Totally different form: