Form

Formula: If + past simple → would + base verb / would be + verb-ing / modal + base verb (could, might, should, must, had better)

The result clause isn't limited to plain "would" — it can also be would be + -ing (an imagined action in progress) or another modal expressing a different degree of certainty or advice.

If clause (hypothetical condition)Result typeMain clause (imagined result)
If I had more money,would + base verbI would buy a house.
If I were you,would + base verbI wouldn't do that.
If I had time,would be + -ingI would be studying right now.
If it weren't raining,would be + -ingwe would be swimming in the lake.
If I had superpowers,modal + base verbI could help people.
If he studied more,modal + base verbhe might pass the exam.
were not was: In formal/standard English, use were for all subjects in the if clause: "If I were rich…" / "If she were here…" In informal speech, "was" is also common: "If I was you…"
would → 'd: Short form: "I 'd buy" / "She 'd go" / "They wouldn't agree."
Second Conditional infographic — structure, usage and examples

Use

The second conditional describes situations that are imaginary, unlikely or impossible in the present or future.

UseExample
Imaginary / hypothetical present If I lived in Paris, I would visit the Louvre every week.
(I don't live in Paris)
Unlikely future If it snowed in summer, everyone would be shocked.
(very unlikely)
Advice (If I were you…) If I were you, I would apologise.
Wishes and dreams If I could fly, I would visit every country.

First vs Second Conditional

First ConditionalSecond Conditional
Real / possible future situation Hypothetical / unlikely situation
If it rains, I will stay in.
(rain is possible today)
If it rained every day, I would move away.
(hypothetical, not likely)
If I find a good job, I 'll move.
(realistic future plan)
If I won the lottery, I 'd buy a yacht.
(dream, unlikely)

Exercises

Choose the correct form. First or second conditional?

1. If I ___ a million euros, I'd travel the world.

2. If she studies tonight, she ___ the test.

3. If I ___ you, I would talk to him directly.

4. If dogs ___ (can) talk, what would yours say?