The Rule: If a word ends in y with a consonant
before it (fly), you drop the y and add -ies to make it plural. If the y has
a vowel before it (boys), then you just add the s.
Add es
The Rule:
If a word ends in ch, sh, x, ss, or s, you add -es to make it plural.
The Rule: If a word ends in y with a consonant
before it (cry), you drop the y and add -ied to make it past tense. If the y has
a vowel before it (play), then you add ed.