If we all DROVE electric cars, there WOULD BE less pollution. - c, something that is unlikely to happen in the present or future: this is the second conditional., If you HEAT water to 100 C, it BOILS. - a general truth: this is the zero conditional., If the Chernobyl reactor HADN'T EXPLODED, thousands of people WOULDN'T HAVE BECOME so ill. - a hypothetical event or situation in the past: this is the third conditional., If we CUT down more forests, we WILL DESTROY more natural habitats. - something that is likely to happen in the present or in the future: this is the first conditional. ,

Conditionals: Zero, first, second &third

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