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Grammartier

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Interactive Grammar: First Conditional

Express real, possible future situations using if + present simple and will + infinitive.

Grammar Explanation · Authentic Examples · Practice Exercises

Lesson progressNot started
Duration
~67 min
Exercises
45
Level
Intermediate

Overview

Express real, possible future situations using if + present simple and will + infinitive.

Structure

  • If-clauseIf + present simple …
  • Main clause… will + base verb
  • ReversedWill clause can come first: I'll stay if it rains.

Key Rules

  • Expresses real, possible future outcomes
  • If-clause uses present simple, never will
  • Comma after if-clause when it comes first
  • Can/may/might/should can replace will in the result

Common Mistakes

  • ❌ If it will rain → ✅ If it rains
  • ❌ If she will come → ✅ If she comes
  • ❌ I'll call if I'll have time → ✅ if I have time

When to use

Possible Conditions

If it rains, we will cancel the trip.

Cause and Effect

If you study, you will pass the exam.

Warnings

If you touch that, it will break.

Offers & Promises

If you help me, I'll help you.

Multiple Choice Quiz

Choose the correct first conditional form

Multiple Choice15 questions
1If it , we will cancel the picnic.
2She will call you if she the answer.
3If you work hard, you succeed.
4What you do if you miss the train?
5If he early, he can help us set up.
6We go by taxi if the buses stop running.
7If she the exam, she'll celebrate.
8I will lend you money if you it back.
9If they now, they'll arrive by six.
10She won't speak to him if he late again.
11If you touch that, you burn yourself.
12He help if you just ask.
13If it warm tomorrow, we'll go swimming.
14We will miss the show if we soon.
15If she harder, she will improve.

Fill in the Blanks

Complete each first conditional sentence with the correct verb form

Fill in the Blanks10 questions
1If it rains,(we/cancel)the match.
2She(call)if she has any news.
3If you(study)hard, you will pass.
4If he(not/hurry), he will miss the bus.
5They(win)if they play well.
6If the weather(be)nice, we'll have a picnic.
7I(not/go)if it snows.
8If she(arrive)early, we can start.
9He(help)if you ask him nicely.
10If I(have)time, I'll come.

Transform the Sentences

Rewrite or complete each sentence as instructed

Transform10 questions

1If it rains, we will stay inside. → → Reverse clause order

2She will call if she has news. → → Negative result

3If you help me, I will help you. → → Negative condition

4He will pass if he studies. → → Question form

5If they win, they'll go to the final. → → Negative condition

6I'll be angry if she forgets again. → → Reverse clause order

7Will she come if we invite her? → → Short answer (Yes)

8If it gets cold, I'll wear a coat. → → Negative result

9They will miss the train if they don't hurry. → → Question form

10If you press this button, the door opens. → → Negative condition

Fix the Errors

Each sentence has one mistake. Rewrite it correctly.

Error Fix10 questions

1If it will rain, we will stay inside.

2She will call if she will know the answer.

3If you would study, you'll pass.

4If he comes, we would start the meeting.

5I'll help you if you will ask me.

6They will win if they will play well.

7What you will do if you miss the bus?

8If she will be late, I won't wait.

9He would help if you ask.

10If they don't hurry, they would miss the train.

Frequently Asked Questions

What does this lesson on conditionals cover?

Express real, possible future situations using if + present simple and will + infinitive.

Which CEFR level is this lesson designed for?

This lesson is designed for Intermediate (B1) learners and forms part of the Conditionals section on Grammartier.

What is the best approach for studying this grammar topic?

Start with the definition, then study the examples carefully to understand how the pattern works in context. Practise identifying the structure in authentic sentences before producing your own — this recognition-first approach builds a strong foundation for accurate, confident use.

Your Grammar Learning Path

Follow the CEFR progression for this topic cluster.

  1. A2
    Zero Conditional
  2. B1
    First ConditionalYou are here
  3. B1
    Second Conditional
  4. B1
    Unless and Conditionals
  5. B2
    Advanced Second Conditional
  6. B2
    Advanced Third Conditional

Before You Start

Make sure you're comfortable with these topics first.

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