B2

First, Second & Third Conditionals — Lesson 3

Even more practice with real, unreal and past-unreal situations

Grammar Focus

All three conditionals talk about if-situations and their results, but each one is anchored in a different kind of reality: things that really happen, things we're imagining, and things that are already too late to change.

1st Conditional — Real Future

If + present simple, will + infinitive

Used for realistic future possibilities and their likely results.

"If you email the client today, she'll reply by Friday."

2nd Conditional — Unreal Present/Future

If + past simple, would + infinitive

Used for hypothetical, unlikely or imaginary present/future situations.

"If I had more storage space, I would keep all my old photos."

3rd Conditional — Unreal Past

If + past perfect, would have + past participle

Used for imagining a different past — it's too late for the situation to change.

"If I had double-checked the address, I wouldn't have got lost."

Tip: the if-clause can come first or second ("If you email her today, she'll reply" / "She'll reply if you email her today") — the meaning doesn't change, only the comma.

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Exercise 1 — Error Identification

Each sentence contains one error, or it may be correct. Click the part that is wrong, then choose why it's wrong.

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Exercise 2 — Gap Fill

Put the verb in brackets into the correct conditional form.

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Exercise 3 — Sentence Transformation

Rewrite each sentence using the conditional type shown, keeping the same meaning.

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Exercise 4 — Build the Sentence

Click the words in the correct order to build a complete conditional sentence.

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Exercise 5 — Which Conditional Fits?

Read each real-life situation and choose the response that uses the most appropriate conditional.

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Exercise 6 — Correct the Mistake

Each sentence has one grammar mistake. Type out the full corrected sentence.

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Exercise 7 — Your Own Sentences

Respond to each situation with a full conditional sentence of the type requested. There's no single correct answer — check your sentence against the model answer for form and logic.