Englishfor English speakers
cone
Noun
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A cone is a geometric shape with a circular flat base joined to a single point at the other end.
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A cone is a fruit of a conifer.
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A cone is an ice cream cone.
of
Preposition
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Made using.
It is a house of cards.
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.
complex
Adjective
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If something is complex, it has lots of parts or pieces, or is difficult to understand.
He has constructed a complex computer system to send translated messages between humans and dolphins.
A complex problem that we face today is poverty, especially in Africa.
complex
Noun
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A problem.
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A group of buildings with a common purpose, such as a university or military base.
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A psychologically based dislike or fear of a particular thing.
Jim has a complex about working for a woman boss.
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A thunderstorm that forms when two storm fronts collide.
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A structure with a central atom or molecule that has a weak connection to atoms or molecules around it.