Intermediate grammar exercise: unless, if

English grammar practice exercise, intermediate.

In this exercise you will practise unless and if.

Exercise instructions

Complete each sentence with unless or if.

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Unless

Unless means 'except if'.

We use unless to say that there may be an exception and that this exception will change the situation.

We're playing tennis tomorrow unless it rains.
(= We're playing tennis tomorrow. However, one exception could change our plans – rain.)

Don't go there unless he tells you to.
(= Don't go there, except if he tells you to go.)

We use the present tense after unless when referring to the future.

I won’t go to the party unless she invites me.

unless she will invite

We don't use unless in conditional sentences.

We'll cancel tomorrow's tennis match if it rains.

unless it rains