First and Second Conditional

If it rains vs If it rained — real and unreal futures explained.

Explanation

English has two common conditional structures for talking about the present or future: the First Conditional and the Second Conditional.

First Conditional = real or possible situations. We use if + present simple in the if-clause, and will + base verb in the main clause.

Form: If + present simple, … will + base verb.

• If it rains tomorrow, we will stay at home.
• If she studies hard, she will pass the exam.

Second Conditional = unreal, imaginary, or unlikely situations, often in the present or future. We use if + past simple, and would + base verb in the main clause.

Form: If + past simple, … would + base verb.

• If it rained tomorrow, we would stay at home.
• If she studied harder, she would pass the exam.

Quick tip: if is not a tense — it only joins the two clauses. The verb form after if tells you which conditional you have.

Examples

First Conditional — real or possible:

• If I finish work early, I will call you.
• If the weather is nice, we will go to the beach.
• If you don't hurry, you will miss the bus.
• If she doesn't feel better tomorrow, she will see a doctor.

Second Conditional — unreal or unlikely:

• If I won the lottery, I would buy a house by the sea.
• If he had more free time, he would learn to cook.
• If we lived in Paris, we would walk to work.
• If I were you, I would talk to the manager.

Notice: in the Second Conditional we often use were instead of was with I/he/she/it after if — this is common in formal and written English.

Common mistakes

1. Using will in the if-clause.

❌ If it will rain tomorrow, we will stay home.

✅ If it rains tomorrow, we will stay home.

2. Using the past simple after would in the Second Conditional.

❌ If I had more time, I would went to the gym.

✅ If I had more time, I would go to the gym.

3. Mixing the two conditionals in one sentence.

❌ If it rains, we would stay home.

✅ If it rains, we will stay home. (real) / If it rained, we would stay home. (unreal)

4. Using will or would at the start of the sentence.

❌ Will if you study more, you will pass?

✅ If you study more, will you pass? / If you study more, you will pass.

In real life

A short dialog between two friends, Tom and Sara, planning the weekend.

Tom: What are your plans for Saturday? Would you like to go hiking?

Sara: I'd love to, but only if the weather is good. If it rains, I will stay home and read.

Tom: That's a good idea. And if the sun shines, we will walk to the lake.

Sara: Perfect. If I were free next weekend, I would travel to the mountains, but I have to work.

Tom: No problem. If we get tired, we will stop for a coffee.

Sara: Deal! If you bring snacks, I will bring drinks.