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
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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.
mad
Adjective
—
If you are mad, you are angry.
I am so mad at you for ruining my painting.
—
If you are mad, you are insane.
He says he hears voices. I think he's gone mad!
rush
Verb
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If you rush, you move or work quickly.
After the accident, they rushed him to the hospital.
I woke up late and rushed through breakfast.
rush
Noun
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A rush is a fast movement.
As the movie finished, there was a rush to the toilets.
A rush of air blew the papers off the desk.
I was in a rush and knocked the glass onto the floor.
for
Preposition
—
shows that something belongs to something else, or has a specific function
This cake is for you.
This is a net for catching fish.
—
For is used to show the reason for something
He was angry, for he had never been called such terrible names before.
for
Subordinator
—
For introduces a clause with a subject and a to-infinitive
It's not good for you to be too relaxed.