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.
railway
Noun
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A railway is road for trains.
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A railway is a company that runs trains.
station
Noun
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A station is a place where many trains or buses stop and people buy tickets and get on.
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A station is a place where a person stays in one place and works.
station
Verb
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If you station someone, you place them to do a task.
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.
two
Determiner
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The number 2. Two means more than one and less than three.
We have two eyes and two ears.
two
Noun
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The number 2.
One and one is two.