• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
Home of English Grammar
  • Home
  • Course
  • Exercises
  • Grammar Rules
  • Matches
  • Posts
  • Tools
    • Grammar Checker
    • Very Replacer
    • Word Counter
  • Vocabulary Lists
  • Archives
    • Social Media Posts
    • Writing Guides
  • Sign in
  • Join free

If or unless? Exercise

September 28, 2013 A2pdf

Hints
Unless has a similar meaning to if not. Study the examples given below.
Unless she works hard she will not pass.

If she does not work hard, she will not pass.
Complete the following sentences using if or unless.

Progress 0 of 10 answered
1I will take the job ............... the pay is too low.
Wrong!
Use "unless" to mean "except if" in this sentence.
2She will not buy the house ............... you lower the price.
Wrong!
Use "unless" because she will buy the house only if the price is lower.
3They will not come ............... you invite them.
Wrong!
Use "unless" because they will come only if they are invited.
4You will not lose that belly fat ............... you do not exercise.
Wrong!
Use "if" before a negative condition with "do not".
5Let's go for a walk ............... you are too tired.
Wrong!
Use "unless" to give the exception to the suggestion.
6............... you stop smoking, your health will get worse.
Wrong!
Use "Unless" to mean "if you do not" at the start of the sentence.
7I wouldn't be able to do it ............... she didn't help me.
Wrong!
Use "if" before the negative condition "she didn't help me".
8She will be very upset ............... I don't call her on her birthday.
Wrong!
Use "if" before the negative condition "I don't call her".
9............... you give me the keys, I won't be able to open the door.
Wrong!
Use "Unless" because I can open the door only if you give me the keys.
10............... you don't leave this place at once, I will call the police.
Wrong!
Use "If" before the negative condition "you don't leave".

Exercise complete

0/ out of 10 correct answers
Challenge a friend
More Exercises →

Answers

  1. I will take the job unless the pay is too low.
  2. She will not buy the house unless you lower the price.
  3. They will not come unless you invite them.
  4. You will not lose that belly fat if you do not exercise.
  5. Let’s go for a walk unless you are too tired.
  6. Unless you stop smoking, your health will get worse.
  7. I wouldn’t be able to do it if she didn’t help me.
  8. She will be very upset if I don’t call her on her birthday.
  9. Unless you give me the keys, I won’t be able to open the door.
  10. If you don’t leave this place at once, I will call the police.

Improve your English grammar, vocabulary and writing

We take you step by step from beginner to advanced, even if you struggled with English at school or have always had trouble remembering the rules.

  • 10 modules, 112 lessons and 730 questions
  • Just log in and learn anytime and anywhere
  • Your progress is saved in your account
  • Download the 2027 Grammar Guide (PDF)

Related lesson in the course Real conditions: zero and first conditionals Module 05: Modals & conditions · Lesson 6

Join free

Already have an account? Sign in

See what’s in the course

Primary Sidebar

2.4M760.9K165.9K

Free 2027 Grammar Guide

  • Download Grammar Guide (PDF)
  • Online grammar course, A1 to C2
  • Weekly exercises and vocabulary
  • Join over 3 million English learners

We respect your privacy. Unsubscribe anytime.

Already have an account? Sign in

Grammar Checker - Try Now

Matches Rankings

    No results yet. Be the first to finish today’s Daily.

      No results yet. Be the first to finish today’s Daily.

        No results yet. Be the first to finish today’s Daily.

          No results yet. Be the first to finish today’s Daily.

          Play Matches

          Latest Posts

          • 100 Phrases for Moving a Meeting Along November 4, 2026
          • 100 Best Synonyms for “Weakness” November 4, 2026
          • 100 Best Synonyms for “Revolting” November 4, 2026
          • 100 Best Synonyms for “Infrastructure” November 4, 2026
          • Persuasive, convincing, cogent, compelling, conclusive and irrefutable: How to choose November 4, 2026
          • Defining and Non-Defining Relative Clauses Exercise November 4, 2026
          • 100 Best Synonyms for “Warm” November 4, 2026
          • Passive Voice Exercise November 4, 2026
          • 100 Best Synonyms for “Informative” November 4, 2026
          • 100 Best Synonyms for “Revel” November 4, 2026
          Home of English Grammar

          Free English grammar exercises, rules and vocabulary lists, with new exercises every week. Join the leading English grammar site with over 3 million followers.

          Join free

          Learn

          • Exercises
          • Matches
          • Grammar rules
          • Vocabulary lists
          • Writing guides
          • Online tools

          More

          • Top social media posts
          • Various posts
          • Contact

          Account

          • Join free
          • Grammar Course
          • Free grammar guide (PDF)

          Copyright © 2026 EnglishGrammar.org

          • Disclaimer
          • Privacy policy
          • Terms
          • Sitemap