THE SIMPLE PRESENT TENSE: SPELLING RULE

When a verbs end  in S, SH, CH, O, Y, Z add ES to the 3rd person singular 

 ( he, she, it).

Example:

Do - does

Kiss - kisses

Wish - wishes

Watch - watches

Box - boxes

Buzz - buzzes

Go - goes

Fish - fishes

Miss - misses

Catch - catches

Listen - listens

Write - writes

Play - plays

Dance - dances

Sing - sings

Talk - talks

 When a verb ends in Y and the previous letter is a consonant change the Y to i and add ES.

Study - studies

When verb ends in Y and the previous letter is a vowel add S to the 3rd person singular.

Play - plays

Fly - flies

Buy - buys

Cry - cries

Reply - replies

Pay - pays

Say - says

Lay - lays