The first conditional

Among the different types of conditional sentences, the first conditional holds great significance in expressing possibilities, predictions, and potential outcomes in the future.

What is the First Conditional?

The first conditional is a type of conditional sentence that links a condition with its probable result in the future. It is used to talk about real and possible conditions and future effects. If the condition is fulfilled, the action in the main clause is likely to happen.


The first conditional follows a simple structure comprising two main clauses: the "if" clause (conditional clause) and the main clause. The "if" clause introduces the condition, while the main clause expresses the expected result.

The structure is as follows:

If + present simple, will/won't + base verb


  • If you don't do your homework, you will get into trouble.
  • If it snows on Saturday, I'll make a snowman.
  • If you stay positive, you will attract good things into your life.

The order of the clauses does not change the meaning.

  • She will miss the flight if she doesn't leave the house on time.
  • They won't pass the exam if they don't study diligently.
  • I will go to the park tomorrow if the weather is sunny.

The word if can be replaced by other words with a similar meaning

  • When the cake is ready, I will take it out of the oven.
  • As soon as she gets home, she will start preparing dinner.
  • In case he forgets, I will remind him about the meeting.

Key points to remember

The first conditional expresses real and possible situations in the future.

It consists of an "if" clause (condition) and a main clause (result).

The "if" clause uses the present simple tense, while the main clause uses "will" followed by the base verb

First Conditional