Mastering English Tenses, Modals, and Conditionals

English Verb Tenses: Quick Reference

Below is a summary of the main English verb tenses, including examples and their Spanish equivalents.

• Present Simple: I walk (camino)
• Present Continuous: I am walking (estoy caminando)
• Present Perfect Simple: I have walked (he caminado)
• Present Perfect Continuous: I have been walking (he estado caminando)
• Past Simple: I walked (caminé)
• Past Continuous: I was walking (estaba caminando)
• Past Perfect Simple: I had walked (había caminado)
• Past Perfect Continuous: I had been walking (había estado caminando)
• Future Continuous: I will be walking (estaré caminando)
• Future Perfect Simple: I will have walked (habré caminado)

Reported Speech (Indirect Speech)

Reported speech often requires a tense backshift (paso atrás) and changes to time and place expressions.

Reporting Verb Structures

1. Verb + (Object/Somebody) + That + Tense Backshift

   Used with verbs like: tell (sb), promise (sb), say, suggest, announce, admit, deny.

2. Verb + (Object) + To + Infinitive

   Used with verbs like: offer, agree, promise, tell (sb), ask (sb), order (sb), warn (sb), remind (sb).

3. Verb + (Object) + Preposition + Verb + -ing

   Used with verbs like: apologize for, accuse (sb) of, congratulate (sb) on.

4. Verb + -ing

   Used with verbs like: suggest, admit.

Time and Place Changes

When reporting speech, expressions of time and place usually change:

• Now → then
• Today → that day
• This → that
• Last (X) → the (X) before
• Tomorrow → the next day
• These → those
• Here → there

Relative Pronouns

Relative pronouns connect clauses and provide additional information.

• Which: que (for things)
• When: cuando
• Whose: cuyo/a/os/as (possession)
• Where: donde
• Who: quien (for people)
• Whom: de quien (object form, formal)
• That: que (used for both people and things)
• What: las cosas que (the things that)

Note: That is generally used for people and Which for things, especially in defining clauses.

Conditional Sentences

Understanding the four main types of conditional sentences.

1. Zero Conditional (Facts)

   Structure: If + Present Simple, Present Simple

   Example: If I drink coffee, I don't sleep.

2. First Conditional (Real Possibility)

   Structure: If + Present Simple, Future (will)

   Example: If I drink coffee, I will not sleep.

3. Second Conditional (Unreal Present/Future)

   Structure: If + Past Simple, would/could + Infinitive (without to)

   Example: If I had a lot of money, I would buy a car.

4. Third Conditional (Unreal Past/Regret)

   Structure: If + Past Perfect, would have + Past Participle (3rd column)

   Example: If I had studied, I would have passed.

The Passive Voice

The passive voice is formed using the verb to be conjugated in the tense of the original sentence, followed by the main verb in the past participle (3rd column).

Active Example: Dior designed this coat.

Passive Example: This coat was designed by Dior.

Wishes and Regrets

• Past Perfect: Used for regrets (arrepentimientos) about the past.
• Could: Used for expressing wishes (deseos) about ability.
• Would: Used for expressing dissatisfaction (descontento) or a desire for change.

Modal Verbs: Obligation, Possibility, and Advice

• Must / Have to: Obligation or strong recommendation.
• Mustn't: Prohibition.
• Don't have to / Needn't: Lack of necessity.
• May / Might: Possibility (tal vez, puede).
• Should / Shall / Ought to: Duty or recommendation (deber).
• Can / Could / Be able to: Ability or possibility.

Perfect Modals (Modal + Have + Past Participle)

Perfect modals refer to actions or possibilities in the past.

• Must Have (Logical Conclusion)

  Used for strong deductions about the past (debe haber...).

  Example: The lights are off. They must have gone out.

• May / Might Have (Past Possibility)

  Used for expressing possibility in the past (puede/podía haber...).

  Example: I think it may have worked.

• Can't Have (Past Certainty)

  Used for expressing certainty that something did not happen (no puede haber...).

  Example: They had a lot of work. They can't have finished.

• Should / Ought to Have (Past Regret/Criticism)

  Used for expressing criticism or regret about a past action (debería haber...).

  Example: I told you, you should have studied more.