Direct Answer
Tense indicates the time of an action (Past, Present, or Future) and its degree of completeness. In English grammar, time is divided into 3 main periods, each possessing 4 structural aspects, totaling 12 distinct tenses:
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The 12 English Tenses Master Chart
#### A. Present Tense Forms (Current Time)
1. Simple Present Tense:
- Formula: $\text{Subject} + V_1 / V_1(+s/es) + \text{Object}$
- Usage: Universal truths, habitual actions, daily routines.
- Example: *The Earth revolves around the Sun.* | *Rohan reads the newspaper daily.*
2. Present Continuous Tense:
- Formula: $\text{Subject} + (is/am/are) + V_1\text{-ing} + \text{Object}$
- Usage: Actions currently ongoing at the moment of speaking.
- Example: *Pooja is preparing for her civil services exam.*
3. Present Perfect Tense:
- Formula: $\text{Subject} + (has/have) + V_3 + \text{Object}$
- Usage: Actions completed recently with relevance to the present moment.
- Example: *They have submitted their final project reports.*
4. Present Perfect Continuous Tense:
- Formula: $\text{Subject} + (has/have) + been + V_1\text{-ing} + \text{Object} + (since/for) + \text{Time}$
- Usage: Actions that began in the past and continue into the present.
- Example: *He has been practicing math problems for three hours.*
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#### B. Past Tense Forms (Prior Time)
5. Simple Past Tense:
- Formula: $\text{Subject} + V_2 + \text{Object}$
- Usage: Completed action in the past with a specific time context.
- Example: *India won the historic cricket match yesterday.*
6. Past Continuous Tense:
- Formula: $\text{Subject} + (was/were) + V_1\text{-ing} + \text{Object}$
- Usage: Ongoing action during a specific moment in the past.
- Example: *The students were taking their mock test at 10 AM.*
7. Past Perfect Tense:
- Formula: $\text{Subject} + had + V_3 + \text{Object}$
- Usage: Action that occurred before another action in the past.
- Example: *The train had departed before we reached the railway station.*
8. Past Perfect Continuous Tense:
- Formula: $\text{Subject} + had + been + V_1\text{-ing} + \text{Object} + (since/for) + \text{Time}$
- Usage: Action ongoing for a duration prior to a past reference point.
- Example: *She had been studying law for five years before joining the bar.*
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#### C. Future Tense Forms (Upcoming Time)
9. Simple Future Tense:
- Formula: $\text{Subject} + (will/shall) + V_1 + \text{Object}$
- Usage: Future predictions, plans, or promises.
- Example: *The Commission will release the official notification next Monday.*
10. Future Continuous Tense:
- Formula: $\text{Subject} + will\ be + V_1\text{-ing} + \text{Object}$
- Usage: Action that will be in progress at a specific future moment.
- Example: *Tomorrow at this time, we will be traveling to Delhi.*
11. Future Perfect Tense:
- Formula: $\text{Subject} + will\ have + V_3 + \text{Object} + (by + \text{Time})$
- Usage: Action that will be accomplished prior to a specified future deadline.
- Example: *Candidates will have finished the exam by 1:00 PM.*
12. Future Perfect Continuous Tense:
- Formula: $\text{Subject} + will\ have\ been + V_1\text{-ing} + \text{Object} + (for + \text{Time})$
- Usage: Action continuing into the future up to a certain point.
- Example: *By next December, Dr. Sen will have been teaching for twenty years.*