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.
study
Noun
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A study is a formal effort to learn about something, usually with a written report at the end.
A recent study of New Mexico, completed using national survey data, indicates that many older New Mexicans are returning to school.
study
Verb
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If you study something, you make an effort to learn it.
We study math at the school.
in
Preposition
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Used to show that something is inside something else.
The cat is in the box.
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Used to show that someone is at home, or is available.
Is John in?
The Doctor is now in.
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Used to show movement towards the inside.
The rain came in through the window.
terror
Noun
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Very strong or intense fear.
I never felt such terror as when I was robbed at gunpoint.
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Something that causes such fear.
The rabid dog was the terror of the neighborhood.
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Violence or the threat of violence for political reasons; terrorism.
The United States has declared a war on terror.
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An annoying or unpleasant person, often a naughty child.
My little brother can be such a terror!