the simple form
for verbs in English:
Helping verbs are used with the simple form to make questions:
Do you live in the United States?
Did you go to the store today?
When will we have dinner?
What did you eat for breakfast?
Helping verbs are used with the simple form to make negative statements:
He doesn’t want any brocolli.
She didn’t do her homework.
I can’t see the menu.
We won’t have enough time to finish.
The simple form is also known as "the base form" or "the infinitive."