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IELTS grammar conditional sentences

Complete the conditional sentences exercises below to test your knowledge of conditionals.

1st conditional example:

If he __________________ (get) the job, he ___________ (be) very happy .

If he gets the job, he will be very happy.

 

Conditional sentences exercises – zero conditional

Complete the conditional sentences exercises below using the zero conditional form.

1. If you _____________ (heat) water to 100 degrees Celsius, it _____________ (boil).
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If you heat water to 100 degrees Celsius, it boils.

 

2. If I _____________ (ask) my dog to sit, he _____________ (obey) me.

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If I ask my dog to sit, he obeys me.

 

3. You _____________ (need) travel insurance if you _____________ (go) on holiday overseas.

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You need travel insurance if you go on holiday overseas.

 

4. If people _____________ (not exercise), they _____________ (become) unfit.

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If people don’t exercise, they become unfit.

 

5. I _____________ (feel) better if I _____________ (eat) well, .

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I feel better if I eat well.

 

Conditional sentences exercises – first conditional

Complete the conditional sentences exercises below using the first conditional form.

6. If I _____________ (find) her phone number, I _____________ (send) it to you.

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If I find her phone number, I will send it to you.

 

7. He _____________ (feel) ill if he _____________ (eat) all those sweets!

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He will feel ill if he eats all those sweets!

 

8. If you _____________ (talk) to him, he _____________ (understand) your problem.

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If you talk to him, he will understand your problem.

 

9. I _____________ (visit) you if I _____________ (come) to your hometown next year.

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I will visit you if I come to your hometown next year.

 

10. If she _____________ (finish) work late, she _____________ (meet) us at the restaurant.

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If she finishes work late, she will meet us at the restaurant.

 

Conditional sentences exercises – second conditional

Complete the conditional sentences exercises below using the second conditional form.

11. If I _____________ (know) how to contact him, I _____________ (tell) him the news.

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If I knew how to contact him, I would tell him the news.

 

12. If he _____________ (ask) her to marry him, she _____________ (say) ‘yes’.

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If he asked her to marry him, she would say ‘yes’.

 

13. He _____________ (not make) so many mistakes if he _____________ (listen) to instructions.

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He would not make so many mistakes if he listened to instructions.

 

14. I _____________ (buy) a boat if I _____________ (have) more money.

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I would buy a boat if I had more money.

 

15. If he _____________ (try) it, he _____________ (like) it!

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If he tried it, he would like it!

 

Conditional sentences exercises – third conditional

Complete the conditional sentences exercises below using the third conditional form.

16. If I _____________ (see) him last week, I _____________ (invite) him.

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If I had seen him last week, I would have invited him.

 

17. If I _____________ (know) you were in trouble, I _____________ (help) you.

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If I had known you were in trouble, I would have helped you.

 

18. I _____________ (never met) you if _____________ (not go) to that party!

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I would never have met you if I hadn’t gone to that party!

 

19. If I _____________ (take) my car for a service, it _____________ (not break down) last night.

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If I had taken my car for a service, it would not have broken down last night.

 

20. She _____________ (not gone) there if I _____________ (warn) her.

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She wouldn’t have gone there if I had warned her.
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