| Type | Example |
|---|---|
| Zero | If you heat water to 100 degrees celsius, it boils. |
| First | If it starts to rain, I will take an umbrella. |
| Second | If I won the lottery, I would travel the world. |
| Third | If you had woken up earlier, you wouldn’t have missed the flight. |
| Past action with present result | If I had finished that project, I would be a millionaire now. |
| Present condition with past result | If you were more hardworking, you would have succeeded. |
| Future action with past result | If I didn’t have an important meeting tomorrow, I would have stayed up late. |
Introduction
The zero conditional is used in English to describe situations that are generally true, such as scientific facts, general truths, and habits. It is often employed to express real and possible situations that have certain consequences. This type of conditional is unique because it is not really about the future or the past; it is about what always happens in specific conditions.
Formula
If/When + present simple, present simple
Example
If you heat water to 100 degrees Celsius, it boils.
- Explanation: In this sentence, the clause “If you heat water to 100 degrees Celsius” is the conditional clause (protasis) using the present simple tense. The result clause (apodosis), “it boils,” also uses the present simple tense. The sentence illustrates a universal truth in physics: when water reaches 100 degrees Celsius, it always boils. This sentence type shows that the described result will absolutely occur if the condition is met, mirroring an unchanging fact.
Using the zero conditional helps describe factual, observable situations, placing emphasis on cause and effect relationships that are universally valid.