Spelling Rules for 3rd person (he / she / it)
If a verb ends in consonant + y, change y to i and add es.
I study English. He studies English.
If a verb ends in tch, ss, x, sh or z, add es.
She watches television.
Susan misses her family.
He fixes the television.
My dad washes the car on Sundays.
Some verbs have irregular spellings:
I go → he / she / it goes
I do → he / she / it does
I have → he / she / it has