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
—
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.
nice
Adjective
—
If something is nice, it's good and people probably like it.
I didn't know him, but I hear he was a very nice man.
Thank you, sir; have a nice day yourself, sir.
It's great. It's much nicer than your old place.
Thank you for coming! It was so nice to see you again.
pair
Noun
—
A pair is two things that go together.
She has many pairs of shoes, but she only has one pair of pants.
Those two make a lovely pair, don't they.
pair
Verb
—
If you pair two people or things, you put them together.
Young women were often paired with older men.
They paired up at the dance.