Page 240 - English Grammar in Use

Unit
114 in case

A Study this example situation:
Your car should have a spare wheel in case you have
a puncture.
(= because it is possible you will have a puncture)
in case something happens =
because it is possible it will happen

Some more examples of in case:
I’d better write down my password in case I forget it.
(= because it is possible I will forget it)
Shall I draw a map for you in case you have a problem finding our house?
(= because it is possible you will have problems finding it)
I’ll remind them about the meeting in case they’ve forgotten.
(= because it is possible they have forgotten)
We use just in case for a smaller possibility:
I don’t think it will rain, but I’ll take an umbrella just in case. (= just in case it rains)

We do not use will aft er in case (see also Unit 25):
I’ll write down my password in case I forget it. (not in case I will forget)

B In case and if are not the same. We use in case to say why somebody does (or doesn’t do) something.
You do something now in case something happens later.
Compare:

in case if
We’ll buy some more food in case We’ll buy some more food if Tom
Tom comes. comes.
(= Maybe Tom will come. We’ll buy (= Maybe Tom will come. If he comes,
some more food now, whether he comes we’ll buy some more food. If he doesn’t
or not. Then we’ll already have the food come, we won’t buy any more food.)
if he comes.)
I’ll give you my phone number in case You can call me on this number if you
you need to contact me. need to contact me.
You should insure your bike in case it You should inform the police if your
is stolen. bike is stolen.

C You can use in case + past to say why somebody did something:
I gave him my phone number in case he needed to contact me.
(= because it was possible that he would need to contact me)
I drew a map for Sarah in case she had a problem finding our house.
We rang the doorbell again in case they hadn’t heard it the first time.

D in case of = if there is … (especially on notices, instructions etc.):
In case of fire, please leave the building as quickly as possible. (= if there is a fire)
In case of emergency, call this number. (= if there is an emergency)

228 if ➜ Units 25, 38–40