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.
journey
Noun
—
A journey is a trip.
Timothy left on a long journey.
journey
Verb
—
If you journey to somewhere, you travel there.
We journeyed from town to town.
beyond
Preposition
—
If mathx/math is beyond mathy/math, it is on the far side of mathy/math.
He went beyond the mountains, into the woods.
the
Determiner
—
Used, instead of a, to reference something specific, already known to exist.
Compare "I read a book." and "I read the book."
—
Used with a stress, to show that the word following is special.
Are you the John Smith that I went to school with?
—
Used with an adjective that acts like a noun to mean all of the people concerned
The poor are always with us.
—
Used with superlatives forms of adjectives and adverbs.
You are the best.
three
Determiner
—
(ordinal third) The number 3.
A triangle has three sides.
three
Noun
—
The number 3.
One and two is three.
sea
Noun
—
A place with a large amount of salt water.