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First Conditional Sentence: What It Is and How to Use It

by Edwin CañasWednesday, June 18 2025

First conditional sentence talks about real possibilities in the future in English. 

It’s perfect for making predictions, giving advice, or expressing what might happen if something else does. 

Let’s dive into how it works and why it’s one of the most useful grammar tools you’ll use in English.

What is the First Conditional Sentence?

what is first conditional sentence

As stated above, the first conditional sentence is used to talk about real and possible situations in the future

It describes a condition that is likely to happen and the result that will follow if that condition is met. 

Think of it like a cause-and-effect statement for the future. For example: “If it rains, we will stay home.

This means there's a real chance of rain, and staying home is the logical result.

This conditional is often used when we want to offer warnings, give advice, make promises, or express possibilities based on real conditions.

How to Form First Conditional Sentences

how to form first conditional sentence

Forming a first conditional sentence is easy! The structure looks like this:

If + present simple, subject + will + base verb

Let’s break it down:

  • Condition part (If-clause): Uses the present simple tense.
  • Result part (Main clause): Uses subject + will + base form of the verb.

ExampleIf she studies hard, she will pass the test.

You can also switch the order: She will pass the test if she studies hard.

Just remember, if the sentence starts with "if," don’t forget to include a comma before the main clause!

Examples of First Conditional Sentences

Here are 10 examples to help you see how the first conditional works in real-life situations:

  • If I see Maria tomorrow, I’ll tell him the news.
  • If you eat too much sugar, you’ll feel sick.
  • If we don’t hurry, we’ll miss the bus.
  • If they arrive late, we’ll start without them.
  • If it’s sunny this weekend, we’ll go to the beach.
  • If you help me with this project, I’ll buy you lunch.
  • If she calls you, will you answer?
  • If we save enough money, we’ll travel to Japan.
  • If he doesn’t study, he won’t pass the exam.
  • If you touch that wire, you’ll get an electric shock!

Conclusion

Now that you’ve learned how the first conditional structure works, it’s time to put it into action! 

Try creating your own sentences about real situations in your life, like, “If I study tonight, I’ll ace my test tomorrow.” 

Improve your English skills with EZClass now! Also, check out the EZClass blog to discover more interesting articles.

And don't forget to share this article with your friends who are learning English!

Edwin Cañas

Edwin Cañas

Founder of EZClass

Edwin Cañas is an expert in e-learning, leadership, and educational technology. As COREnglish’s Director of Operations and founder of EZClass, he strives to make learning more engaging and accessible. He also co-authored the "How to Master Grammar for Beginners (Spanish Edition)" book to help Spanish learners master English with ease.

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