Englishfor English speakers
a
Determinative
—
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".
—
In some schools, an A is a very high grade.
Ron got an A on his earth science test.
serious
Adjective
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A problem or situation is serious if it is not funny or comical, but important.
This is a serious problem. We must do something.
—
A person is serious if the person is not laughing or joking, but saying what they mean.
I see. When you said the room was empty, you were serious!
The woman's face looked serious, so I knew she was saying something important.
man
Noun
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A man is a male human.
He was a young man with blue eyes.
—
A human being of either sex; a person.
God cares for all races and all man
God made man in his own image
Scientists and biologists think that man and animals evolved over the years, and that man evolved from a "human" species such as "homo erectus" or "neanderthals" and that man first stood up, millions of years ago, but this isn't true
man
Interjection
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You use man to show your surprise or disappointment.
Oh man, I wanted to do the dishes!