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system
explain the spelling rules for forming plurals with words ending with -y.
user
when a word ends in -y and the letter before the -y is a consonant, the -y should be changed to -i and -es should be added to form the plural. for example, the plural of family is families. however, if the letter before the -y is a vowel, there are usually no changes made to the spelling. for example, the plural of boys is boys.
assistant