Englishfor English speakers
a
Determinative
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A is used when the following word could be any of a certain type.
Compare "A book I saw on the shelf" and "The book I gave you yesterday".
a
Noun
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A is the first letter of the alphabet.
The letter "a" comes before "b".
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In some schools, an A is a very high grade.
Ron got an A on his earth science test.
slim
Adjective
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When someone is slim, they are thin and not fat.
She is so slim that she looks like a wooden stick.
chance
Noun
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Something that can happen.
We have the chance.
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Something that is random; luck.
Poker is a gamer of chance.
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How much something is likely to be true.
There is a 30% chance of rain tomorrow.
chance
Verb
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If you chance upon something, you discovering it even though you were not looking for it.
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If you chance something, you try it, even though it may not work.