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Conditionals
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If the world stops to exist, …
First conditional If the world stops to exist, …
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First conditional If the world stops to exist, … If + present simple, … will + infinitive
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First conditional Use: POSSIBILITY
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If the world stopped to exist, …
Second conditional If the world stopped to exist, …
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Second conditional If the world stopped to exist, … If + past simple, … would + infinitive
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IMPROBABILITY / IMPOSSIBILITY
Second conditional Use: IMPROBABILITY / IMPOSSIBILITY
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Second conditional Note: were instead of was e.g. If I were an astronaut I would want to float in space.
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If the world had stopped to exist, …
Third conditional If the world had stopped to exist, …
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Third conditional If the world had stopped to exist, … If + past perfect, … would have + infinitive
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Third conditional Use: IMPOSSIBILITY (but referring to the past)
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Zero conditional If the world explodes, …
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If the world explodes, … If + present simple, … present simple
Zero conditional If the world explodes, … If + present simple, … present simple
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Zero conditional Use: CERTAINTY
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Time clause When the world runs out of resources, …
As soon as we manage to change our ways, …
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Time clause Use: CERTAINTY
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Summary probability conditional example time 100% zero
(or time clause) If you heat ice, it melts. any 50% 1st If I win the lottery, I will buy a car. future 10% 2nd If I won the lottery, I would buy a car. 0% 3rd If I had won the lottery, I would have bought a car. past Don’t take the 50% and 10% too literally. They are just there to help.
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