Intermediate grammar exercise (B1 level): first conditional sentences
English grammar practice exercise, for intermediate (B1) level.
In this exercise you will practise first conditional sentences.
Exercise instructions
Put the word in brackets into the correct form to complete these first conditional sentences:
| Structure of the first conditional | ||
| positive | negative | question |
| If you hurry, you'll catch the bus. | If you walk slowly, you won't catch the bus. If you don't hurry, you'll miss the bus. |
What will you do if the train is full tomorrow? |
| you'll = you will | won't = will not don't = do not |
what you will |
| The first conditional – common mistakes | ||
| Common mistakes | Correct version | Why? |
| if you will go | If you go to England, you will improve your English. | We use the present simple in the if-clause. |
| if I will see him | I'll tell him if I see him. | We use the present simple in the if-clause. |
| I call him | If I find his number, I will call him. | We use will in the main clause, to express certainty in the future. |