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Conditional Sentences (Zero conditional)

The basic word in conditional sentences is “if”. A conditional sentence always contains two parts, one part to explain a possible situation, and the second part to explain the consequence.

Example: If it rains, they'll get wet. Also, we can switch the two parts of a conditional sentence, therefore “if” is in the second part. 

Example:  What will Jack do if he misses his plane?

There are four types of conditional sentences.  

0 – The zero conditional

1 – The first conditional

2 – The second conditional

3 – The third conditional

The zero conditional sentences:

We use the zero conditional when we want to talk about permanent truths like general habits and scientific facts. The zero conditional sentence form is shown in the table below.

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English exercise "Conditional Sentences (Zero conditional)" created by farshid with The test builder. [More lessons & exercises from farshid]
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1. If John (heat) water to 100 degrees Celsius, it boils.

2. If Harry (eat) too much food, he puts on weight.

3. If it doesn't rain enough this winter, the earth (get) dry.

4. If Scarlett is happy, she (go) to bed early.

5. If your fingers (touch) a hot surface, you burn them.

6. If Jennet (combine) oxygen and hydrogen, she gets water.

7. If the lions (not/eat) enough food, they die.

8. Do North Pole ices (melt) if it is sunny?

9. If the temperature decreases to zero degrees Celsius or more, the water (freeze).

10. If the Smith's family (go) out, they usually go to the cinema.