Study the following rules:
- Use ending -s for plural nouns.
Examples: cat - cats, pen - pens, dog - dogs.
- Use ending -es if a noun ends in -s, -ss, -x, -sh, -ch, -tch.
Examples: fox - foxes, bus - buses, dish - dishes.
- Some nouns have irregular plural form.
Remember plural forms of the following words:
man - men
woman - women
child - children
foot - feet
tooth - teeth
mouse - mice