Intermediate grammar exercise: first conditional sentences

English grammar practice exercise, for pre-intermediate and intermediate level.

In this exercise you will practise first conditional sentences.

Instructions: Put the word in brackets into the correct form to complete these first conditional sentences:

questions go herescore goes here

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?




The first conditional - common mistakes
Common mistakes Correct version Why?
If you will go to England, you will improve your English. If you go to England, you will improve your English. We use the present simple in the if-clause.
If I find his address, I send him the letter. If I find his address, I will send him the letter. We use will in the main clause, to express certainty in the future.
I'll tell him if I will see him. I'll tell him if I see him. We use the present simple in the if-clause.