• 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
  • Join free

If vs. Unless Exercise

May 7, 2024 B1pdf

Fill in the blanks.

Progress 0 of 12 answered
1He will not obey ............... you threaten him with serious consequences.
Wrong!
Use "unless" to mean "if you do not" before the condition.
2............... you get a university degree, your job prospects will improve.
Wrong!
Use "If" because getting a degree is the condition for better job prospects.
3I will not be able to pay off my debts ............... I win the lottery.
Wrong!
Use "unless" because it means "if I do not win the lottery."
4............... it doesn't rain, my plants will die.
Wrong!
Use "If" because the sentence already has the negative verb "doesn't rain."
5You will not achieve much in life ............... you keep procrastinating.
Wrong!
Use "if" because procrastinating is the condition that leads to the negative result.
6............... he weren't so lazy, he could easily pass the exam.
Wrong!
Use "If" to introduce an unreal condition about his laziness.
7............... he had fallen into the river, he would have drowned.
Wrong!
Use "If" to introduce an imagined past condition.
8............... you cut down on your consumption of fast food, your health will not improve.
Wrong!
Use "Unless" because it means "if you do not cut down."
9............... you repent, your sins will not be forgiven.
Wrong!
Use "Unless" because repentance is necessary for forgiveness in this sentence.
10............... I were a bird, I could fly.
Wrong!
Use "If" to introduce an unreal imaginary situation.
11............... you avoid making the same mistakes, your grades will not improve.
Wrong!
Use "Unless" because it means "if you do not avoid" the same mistakes.
12............... you speak Mandarin, it is not easy to live or work in China.
Wrong!
Use "Unless" because speaking Mandarin is presented as necessary for living or working easily in China.

Exercise complete

0/ out of 12 correct answers
Challenge a friend
More Exercises →

Answers

  1. He will not obey unless you threaten him with serious consequences.
  2. If you get a university degree, your job prospects will improve.
  3. I will not be able to pay off my debts unless I win the lottery.
  4. If it doesn’t rain, my plants will die.
  5. You will not achieve much in life if you keep procrastinating.
  6. If he weren’t so lazy, he could easily pass the exam.
  7. If he had fallen into the river, he would have drowned.
  8. Unless you cut down on your consumption of fast food, your health will not improve.
  9. Unless you repent, your sins will not be forgiven.
  10. If I were a bird, I could fly.
  11. Unless you avoid making the same mistakes, your grades will not improve.
  12. Unless you speak Mandarin, it is not easy to live or work in China.

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

2.4M761.4K165.8K

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

Latest Posts

  • 100 Best Synonyms for “Struggling” October 25, 2026
  • 100 Best Synonyms for “Excessive” October 25, 2026
  • Cheesy vs. corny vs. hokey vs. schmaltzy vs. kitschy vs. tacky October 25, 2026
  • Preposition Placement in Relative Clauses Exercise October 25, 2026
  • 100 Best Synonyms for “Contentious” October 25, 2026
  • 100 Best Synonyms for “Pursued” October 25, 2026
  • 100 Best Synonyms for “Strongly” October 25, 2026
  • 100 Best Synonyms for “Ex” October 25, 2026
  • Assure, ensure, insure, reassure, guarantee, and secure: how to choose October 25, 2026
  • 100 Best Synonyms for “Condescending” October 25, 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