The document explains conditional sentences, focusing on real and unreal situations, and highlights the zero conditional, which expresses absolute truths based on specific conditions. It illustrates the structure of zero conditional sentences using present simple tense for both the condition and the result, emphasizing that the result is always true. Examples are provided to clarify the concept, along with exercises that reinforce understanding.

2.  Sentences used to indicate that an action or state of
being is conditioned on the occurrence of something
else.
 The conditionals are used to talk about real or unreal
situations,(they are sometimes called if-clauses).
 Real Conditional describes real-life situations.
 Unreal Conditional describes unreal, imaginary
situations.
For example: If a certain condition is true, then a
particular result happens.

3. Zero Conditional

4.  We use the so-called zero conditional when the
result of the condition is always true, like a scientific
fact.
Ex.
If I don’t charge the battery, my mobile phone doesn’t
turn on.

5.  Conditional 0 is formed by the use of the present
simple in the if clause followed by a comma, and by
the result clause in present simple.
If
Result
Present simple
If
Condition
Present simple
I am late for work
My boss gets angry

6.  You can also put the result clause first, without using a
comma between the clauses.
Result
If
Condition
Present simple
if
Present simple
My boss gets angry If
I am late for work.
 *We can also use when instead of if, for example:
When I get up late I miss my bus.

7.  Notice that we are thinking about a result that is
always true for this condition.
 The result of the condition is an absolute certainty.
We are not thinking about the future or the past, or
even the present. We are thinking about a simple fact.
 We use the present simple tense to talk about the
condition. We also use the present simple tense to talk
about the result.
 The important thing about the zero conditional is
that the condition always has the same result.

8. Probability
Condition
Example
Time
100%
Zero conditional
If you heat ice, it
melts
Any time.

9. 1.
2.
3.
4.
5.
People (get) ______ fat, if they (eat) _______
junk food.
If a person (practise) ________ sports, he or she
always (feel) ________ good.
If the sun (rise) _________ high, it (become)
__________very hot.
Plants (die) _____, if it (do) ____not rain.
If children (not/get) ______enough sleep at
night, they (get) ________ tired all day.

10. Gets
Am speaking
Are having
Am
Are going
Go
Have finished
Are thinking
‘s raining
Have painted

11. 1.
2.
3.
4.
5.
When you ____ to Lyon, try some of the specialities
in the typical restaurants.
If you ____, pick me up on the way.
If you ____ all your work, go home early.
When he ___ here, don’t say anything to him. I want
to keep it secret.
Don’t talk about things like that when we _____
lunch!

12. 6. When you ____ the kitchen, you can paint the hall.
7. I’ll give you a call when I ____ ready to leave.
8. If you ____ of going to Prague, talk to John.He knows
it very well.
9. When I_____ on the phone, please don’t make so
much noise.
10. If it _____, take a taxi.