Three type of tense:-
1. Present tense
*simple present tense
*present continuous tense
*present perfect tense
* present perfect continuous tense
2. Past tense
* simple past tense
* past continuous tense
* past perfect tense
* past perfect continuous tense
3. Future tense
* simple future tense
* future continuous tense
* future perfect tense
* future perfect continuous tense
This is important to learn in tense