Simple Present Tense -
It is one of several forms of present tense in English mainly used to describe habits, general truths and fixed situations.
For example- 1-The sun rises in the east.
2- It rains heavily in Assam.
Simple Past Tense-
??????It shows that you are talking about something that has already happened.
For example- 1- I saw a movie yesterday
2- I ate burger with my best friend yesterday.
Simple Future Tense-
The simple future is a verb tense that is used to talk about things that haven't happened yet.
For example- 1- I will met her later.
2- She will cook dinner