First conditional

Use the first conditional for realistic future possibilities and their likely results.

When do we use it?

Combine an if-clause in the present simple with will plus a base verb.

Form

Use if + present simple, will + base verb. Do not normally use will after if.

• If it rains, we will stay home.
• I will call you if I arrive early.

Key contrast

Read the whole context and identify the time, meaning, noun type or sentence structure before choosing.

Common mistakes

• If it will rain, we will stay. → If it rains, we will stay.
• If she comes, I call her. → If she comes, I will call her.

Remember

Use the first conditional for realistic future possibilities and their likely results.

Quick check

• Find the grammar clue.
• Check the subject and verb form.
• Confirm that the answer fits both structure and meaning.