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.
life
Noun
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Life is what makes a person, animal or plant grow and function.
s want to learn if there is life on other planets.
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Life is the time when people, animals or plants grow and exist before they die. Your life is the time that you live.
The life of an ant is not as long as the life of a human.
The lives of great men and women are very interesting.
He never left his home town in his life.
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The state of something being in existence.
We brought the company back to life, after it had be closed for 5 years.
for
Preposition
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shows that something belongs to something else, or has a specific function
This cake is for you.
This is a net for catching fish.
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For is used to show the reason for something
He was angry, for he had never been called such terrible names before.
for
Subordinator
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For introduces a clause with a subject and a to-infinitive
It's not good for you to be too relaxed.
the
Determiner
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Used, instead of a, to reference something specific, already known to exist.
Compare "I read a book." and "I read the book."
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Used with a stress, to show that the word following is special.
Are you the John Smith that I went to school with?
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Used with an adjective that acts like a noun to mean all of the people concerned
The poor are always with us.
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Used with superlatives forms of adjectives and adverbs.
You are the best.
tsar
Noun
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The tsar is the title of the Emperors of Russia before 1917.