Englishfor English speakers
as
Preposition
—
A word that is used to compare two things that are equal.
As you know, we need more workers.
I baked the cake as my mother used to.
The room looks just as it did when I was a child.
The speech, as he remembered it, was very powerful.
Interesting as it seems, I don't think I'll get it.
He was as big as a mountain.
—
A word that is used to show that two things happened at the same time.
Just as I went out, it started to rain.
We sleep as the world turns in darkness.
—
A word that is used to show why something happens.
As I couldn't understand French, I didn't watch the film.
as
Adverb
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A word that is used to compare two things that are equal. (Used before adjectives)
You are younger than I am, but nearly as tall.
This is not as good as it was last time.
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.
function
Noun
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Something or someone's function is its purpose or its job.
The army sometimes performs a policing function.
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A function is an organised event.
I met Sylvia at a church function last week.
—
If mathX/math is a function of mathY/math, then mathX/math exists because of or is affected by mathY/math
The speed of the computer is a function of its main processor.
When you see, mathY=f(X)/math, you read it, "mathY/math is a function of mathX/math". Here the value of mathY/math depends on the value assigned to the variable mathX/math.
function
Verb
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If something is functioning, it is working and is not completely broken.
Her heart stopped, but her brain continued to function.
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If something functions as mathX/math, it does the job of mathX/math.
In this sentence, "sentence" functions as the subject.
of
Preposition
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Made using.
It is a house of cards.