Complete the following sentences.
1I will take the job ............... the pay is too low.
Wrong!
Use "unless" to mean "if not" when the low pay is the only reason not to take the job.
2I will be back tomorrow ............... the flight is canceled.
Wrong!
Use "unless" because the speaker will return except if the flight is canceled.
3Let’s go for a walk ............... you are too tired.
Wrong!
Use "unless" to mean "if you are not too tired."
4I am going to work in the garden this afternoon ............... it rains.
Wrong!
Use "unless" because rain is the condition that would stop the gardening.
5I will be surprised ............... he doesn’t have an accident soon.
Wrong!
Use "if" before a normal condition, especially when the clause is already negative.
6I think she would look prettier ............... she didn’t wear so much make-up.
Wrong!
Use "if" to introduce the imagined condition in this second conditional sentence.
7............... you don’t stop smoking, you will fall seriously ill.
Wrong!
Use "If" because the negative condition is expressed with "don’t."
8............... you start now, you will not get there in time.
Wrong!
Use "Unless" to mean "if you do not start now."
9............... I were rich, I would spend all my time traveling.
Wrong!
Use "If" to introduce an unreal condition with "were."
10............... I have enough time tomorrow, I will come and see you.
Wrong!
Use "If" for a possible future condition.
Done.
Score: 0/10
Answers
- I will take the job unless the pay is too low.
- I will be back tomorrow unless the flight is canceled.
- Let’s go for a walk unless you are too tired.
- I am going to work in the garden this afternoon unless it rains.
- I will be surprised if he doesn’t have an accident soon.
- I think she would look prettier if she didn’t wear so much make-up.
- If you don’t stop smoking, you will fall seriously ill.
- Unless you start now, you will not get there in time.
- If I were rich, I would spend all my time traveling.
- If I have enough time tomorrow, I will come and see you.

