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27
Describing situations of cause and effect
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Activity 1.7
Complete the following sentences with the corresponding
If
,
When
or
Unless.
When we talk about things that are generally or always true, we can use:
If / When / Unless
+ a
present form
+
present
simple or
imperative.
If
is used when a situation is real or possible, in this case we
can replace “if” by “when”
without changing the meaning of the sentences.
Example:
If
your father
gets
there before me,
ask
him to wait.
When
is a conjunction that means at or during the time that something happen.
Example:
When
you
take
a plane, you
arrive
faster to your destination.
Unless
is used to say that something can only happen or be true in a particular situation.
Can be used instead of if + not in conditional sentences.
Example:
Unless
you
pay
the ticket, you
can’t
go to the cinema with us.
Check your answers in the Answer Key.
1.
Take your running shoes _________ you are going to play football.
2.
________ you see the teacher, tell him that his students are in the classroom.
3.
Come with us _________ you have something more important to do now.
4.
________ you are reading in English, don’t translate.
5.
________ you can’t do your homework, ask for help.
6.
________ you can’t fnd your keys, you can take my car.
7.
Buy the red blouse, ________ you prefer another color.
8.
________ you want to learn how to play the piano, you need to practice a lot.
9.
The students are not going to the party, _________ they fnish their homework.
10.
________you pass your driving test, you can drive alone.