Upper-intermediate grammar exercise: zero, first, second and third conditionals

English grammar practice exercise, upper-intermediate / advanced level.

In this exercise you will practise the zero, first, second and third conditionals.

Instructions: Decide which conditional is best for the following sentences and put the words in brackets into the correct form.



questions go herescore goes here



Structure of the zero conditional
positive negative question
If/when you heat water to 100 degrees, it boils. If/when you don't heat water to 100 degrees, it doesn't boil. What happens if/when you heat water to 100 degrees?

Structure of the first conditional
positive negative question
If I see him, I'll (I will) tell him.   If you don't hurry, you'll miss the bus. What will you do if there is a problem?





Structure of the second conditional
positive negative question
If I had more time, I'd (I would) travel more. I wouldn't (would not) refuse if you offered me $10,000. What would you say if you met Queen Elizabeth?
If I were you, I'd leave the job. I wouldn't (would not) leave the job if I were you. Would you leave the job if you were me?

Structure of the third conditional
positive negative question
If I'd (I had) known you were coming, I would have waited for you. If she hadn't (had not) been ill, she would have gone to the cinema. Would you have done it if you'd (you had) known earlier?