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This page is about the noun "fuel", which can be both countable and uncountable

fuel → uncountable

Meaning: something that's burned for heat or power, like wood, oil, gas, etc.

Example sentence: Mum thinks her car's broken down, but it's just run out of fuel.

fuel → countable

Meaning: a particular kind of fuel

Example sentence: One day we'll run out of fossil fuels like oil, coal and natural gas.

Quick Quiz:

In which sentence is the word "fuel" uncountable?

a. Mario says food is just fuel for the body.

b. Most of the fuels we use now are unrenewable.

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Contributor: Matt Errey