Simple Present Tense

The Simple Present tense

The simple present tense expresses daily habits or usual activities.
The simple present tense is used for events or situations that exist always, usually,
or routinely in the past, present, and future.

If you take a look at the table with the verb drink, you will notice that after he, she, it (3rd person singular) verb drink has a final -s. Sometimes, adding the final -s changes spelling of the verb. These are the spelling rules for the 3rd person singular of the simple present tense.

wear - wears put - puts drink - drinks	To make a simple present verb 3rd person singular, you usually add only -s.
study - studies cry - cries pay - pays buy - buys	End of verb: consonant + -y Spelling: change y to i, add -es End of verb: vowel + -y Spelling: add -s
push - pushes teach - teaches kiss - kisses fix - fixes	End of verb: -sh, -ch, -ss, -x Spelling: add -es
have - has go - goes do - does	The 3rd person singular forms of have, go and do are irregular.