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.
blast
Noun
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A blast is when something blows up or explodes.
The blast shook the building.
blast
Verb
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To blast is to make a loud noise.
His car radio blasted music. The whole neighborhood could hear it.
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To blast can also be to explode or to blow a hole through something.
Blast a hole through that wall so we can escape the prison.