Explain simple tense , continuous tense and perfect tense

(

Simple ) Present Indefinite Tense :

I eat mangoes often.

The Sun rises in the East.

( To describe regular, habitual, routine actions, and universal or scientific truths.)

Present Continuous Tense :

I am eating mangoes now.

( To describe an action which is going on at the time of speaking.)

Present Perfect Tense :

I have eaten a mango just now.

( To describe an action which has just now or recently been completed, and which has a connection with, or impact on, the present time or place.)

Explanation:

i can you with this question.

i think idk if im right but i think its d