What you'll learn
By the end of this lesson, you'll be able to talk about real, possible future situations and their results using the first conditional.
When do I use it?
Use the first conditional when an action in the future has a real chance of happening. The if-clause sets the condition, and the main clause gives the likely result.
- If I have time, I will call you.
- If it rains tomorrow, we will stay at home.
- She will be happy if she passes the test.
The two halves can be swapped: I will call you if I have time. Put a comma after the if-clause when it comes first.
How do I form it?
if + present simple, will + base verb
- If-clause: If + subject + present simple, main clause: subject + will + base verb. If you study, you will pass.
- Main clause first, no comma: You will pass if you study.
Common mistakes for Spanish speakers
The classic mistake is putting "will" in the if-clause: "If I will have time, I will call you" is wrong, it is "If I have time, I will call you". Spanish "si tengo tiempo, te llamaré" puts the future only in the main clause, so mirror that: present in the if-part, "will" in the result. Also avoid "would" here — "If I would have time" is not correct English; "would" belongs to the second conditional.
One "will" per sentence, and it lives in the result clause. The if-part stays in the present simple.
Practice
Multiple Choice
A2Which sentence is a correct first conditional?
Fill in the Blank
A2If you hard, you will pass the exam.
Hint: Keep the if-clause in the present simple; 'will' only appears in the result.
Find the Error
A2Practice Speaking
Apply what you've learned in a real conversation with AI feedback.
Level: A2