English Grammar

Tenses & Verb Forms — Time and State in a Sentence

Tense is the form of a verb that tells the time of an action. English has three tenses (Present, Past, Future), each with four aspects (Simple, Continuous, Perfect, Perfect Continuous), giving 12 tense forms. Modal verbs add a layer of meaning such as ability, permission, possibility or obligation.

Exam relevance: Spotting Errors and Sentence Improvement questions in SSC, Banking and RRB exams almost always include 1-2 tense errors — typically wrong tense after 'since/for', misuse of past perfect, or wrong modal usage.

On this page

  1. Present Tense (Simple, Continuous, Perfect, Perfect Continuous)
  2. Past Tense (Simple, Continuous, Perfect, Perfect Continuous)
  3. Future Tense (Simple, Continuous, Perfect, Perfect Continuous)
  4. Modal Verbs (can, could, may, might, shall, should, will, would, must, ought to)

1Present Tense (Simple, Continuous, Perfect, Perfect Continuous)

The Present tense expresses an action happening now, a habit, a universal truth, or a recently completed action.

Simple Present (V1 / V1+s) — habits, facts, scheduled events. Present Continuous (is/am/are + V1+ing) — action happening at the moment of speaking or around it. Present Perfect (has/have + V3) — action completed but with present relevance; used with 'just, already, yet, ever, never, since, for'. Present Perfect Continuous (has/have been + V1+ing) — action that started in the past and is still continuing; used with 'since' (point of time) and 'for' (duration).

Examples
  • Simple: The sun rises in the east.
  • Continuous: She is reading a novel right now.
  • Perfect: I have just finished my homework.
  • Perfect Continuous: He has been working here since 2010.
Exam tip: After 'since/for' with a continuing action, use Present Perfect Continuous, not Simple Present. Wrong: 'I am living here since 2010.' Right: 'I have been living here since 2010.'

2Past Tense (Simple, Continuous, Perfect, Perfect Continuous)

The Past tense expresses an action completed at a definite time in the past.

Simple Past (V2) — action completed at a specific past time. Past Continuous (was/were + V1+ing) — action in progress at a past moment, often interrupted. Past Perfect (had + V3) — earlier of two past actions. Past Perfect Continuous (had been + V1+ing) — action that had been continuing up to a moment in the past.

Examples
  • Simple: Gandhi Ji was born in 1869.
  • Continuous: I was studying when the lights went out.
  • Perfect: The train had left before we reached the station.
  • Perfect Continuous: She had been waiting for two hours when he finally arrived.
Exam tip: Of two past actions, the earlier one takes Past Perfect, the later one takes Simple Past. 'When I reached, the bus had left.'

3Future Tense (Simple, Continuous, Perfect, Perfect Continuous)

The Future tense expresses an action that will happen later than the present.

Simple Future (will/shall + V1) — a plain future fact, prediction, promise or instant decision. Future Continuous (will be + V1+ing) — an action in progress at a future moment. Future Perfect (will have + V3) — an action that will be completed before a specified future time. Future Perfect Continuous (will have been + V1+ing) — duration of a future action up to a future point.

Examples
  • Simple: I will call you tomorrow.
  • Continuous: This time next week, I will be flying to Delhi.
  • Perfect: By 2030, she will have completed her PhD.
  • Perfect Continuous: By December, he will have been teaching for ten years.
Exam tip: In subordinate clauses of time/condition (after 'when, if, before, until, as soon as'), use Simple Present even for future meaning: 'I will call you when I reach home.'

4Modal Verbs (can, could, may, might, shall, should, will, would, must, ought to)

Modals are auxiliary verbs that express ability, permission, possibility, advice, obligation or necessity.

Can/Could — ability and informal permission ('I can swim'; 'Could you help me?'). May/Might — formal permission and possibility ('You may leave'; 'It might rain'). Shall/Should — suggestion or advice ('You should exercise daily'). Will/Would — willingness, polite request, or past habit ('Would you mind?', 'He would walk for hours every evening'). Must — strong obligation or near-certainty ('You must follow the rules'). Ought to — moral duty.

Examples
  • Ability: She can speak four languages fluently.
  • Possibility: It might snow in the hills tonight.
  • Advice: You should drink more water during summer.
  • Obligation: All passengers must wear seat belts.
Exam tip: Modals are always followed by the bare infinitive (V1 without 'to'), except 'ought to' and 'used to'. Wrong: 'He can to swim.' Right: 'He can swim.'

Quick Revision Facts

  • Stative verbs (know, believe, own, contain, belong) are not used in continuous tenses.
  • 'Since' takes a point of time; 'for' takes a duration: since 2010 / for ten years.
  • Use Past Perfect only when there are two past actions — for a single past action, Simple Past is enough.
  • Modal + bare infinitive: 'must go', 'should know', 'can do' — never 'must to go'.

Frequently Asked Questions

'Have/has been' (Present Perfect Continuous) — action started in the past and still continues now. 'Had been' (Past Perfect Continuous) — action that was continuing up to some point in the past.

Modern usage allows 'will' for all persons. 'Shall' is now mostly used in formal/legal language ('We shall overcome') or in offers and suggestions ('Shall I open the window?').
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