1. Use the simple present tense to talk actions that happen again and again, such as habits and routines.
2. use the simple present tense to tell facts.
3. Use the simple present with non-action verbs such as be, have, know, understand, like, prefer need, and want.
4. In affirmative statements, use the base form of the verb, except for third person singular.
add -s or -es with he, she, or it.
5. In negative statements, use does not or do not before the base form of the verb. Use in doesn't and don't in speaking and informal Writing.
6. For questions in the simple present, use do or does before the subject
7. Do not use do or does for questions with be