C'est vs. Il est
Why is it correct to say, 'C'est un homme dur' but incorrect to say, 'Il est un homme dur' ?
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In French, there are three ways to say "it is"- "c'est", "il est" (mas.) and "elle est" (fem.) Let's say you're talking about a car. You say "It is a car"- "C'est une voiture." You say "c'est" because you're describing a noun. But if you're describing the color of the car, you say "Il est rouge" because there isn't a noun in the sentence. So if you said "It is a red car", you would say "C'est une voiture rouge."