Tenses   
 A tense is a form of the verb which denotes the particular point of time. The form of verbs tell us the action or state and time.
Tense is distributed into three periods
| 1. Present | 2. Past | 3. Future | 
 
      Subdivisions: there are four categories  of Tenses
| Indefinite | Continuous | 
| Perfect | perfect continuous | 
 
Tenses Chart
|  | Indefinite | Continuous | Pefect | Perfect continuous | 
| Present | V1/verb +es/s Or do/does + v1 | Is/are/am + verb + ing | Has/have + v3 | Has been/have been + verb + ing | 
| Past | V2 or did + v1 | Was/were + v + ing | Had + v3 | Had been + verb + ing | 
| Future | Will/shall + v1 | Will be/shall be + verb + ing | Will have + v3 | Will have been/shall have been + verb + ing | 
 
 
Indefinite:
- 
Present indefinite tense (Simple present tense)
| I do. | He does. | 
| Do you play hockey? | I don’t play but he plays. | 
 
- 
Past indefinite tense (Simple past tense)
| I did. | What did you find there? | 
| Did you walk at night? | I didn’t walk at night but He walked. | 
 
- Future indefinite tense (I will do.)
| I will help him. | he will not go. | 
| Will you learn English? | We will follow the rules. | 
 
Continuous Tenses(progressive actions)
| I am speaking the truth. | You are making a mistake. | 
| She is buying some vegetables. | Are they not helping others? | 
 
- Past continuous tense ( I was doing)
| He was going home. | 
| Were they smoking in the street? | 
 
- Future continuous tense (I will be doing)
| She will be learning how to swim in summer vacations. | He will be going to his hometown by train tomorrow. | 
 
 
Perfect (action done)
- 
Present perfect tense  ( I have done)
| he hasn’t got ready yet. | They have taken breakfast. | 
| She has gone. | Rahul has not reached the railway station yet. | 
 
- Past perfect tense  (I had done)
| I had already taken dinner. | 
| She hadn’t done her homework before. | 
 
- Future perfect tense  (I will have done)
| She will have done her graduation by next year. | 
| I will have completed my class by 10 am. | 
 
Perfect continuous tense (progressive actions with time expressions)
- Present perfect continuous tense  ( I have been doing)
| She has been reading a novel for an hour. | 
 
2. Past perfect continuous tense( I had been doing)
| I had been walking in the park since 9 pm. | 
 
| He will have been running in a marathon since 6 am. | 
 
Exercise (Tenses):
Write the name of tenses
-  He has done it.
- She did.
- They had done it before.
-  You have been doing it for a long time.
- He will have done it by Monday.
- Katherine is still doing it.
- We were doing then.
- I am doing.
- I will be doing.
- Were you doing?
- Who did it?
- She does.
- He will do.
- Rock had been doing the exercise since morning.
- Not only that, but Jack will have been doing his work since night.