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.
penny
Noun
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A penny is a small coin of little value; 100 pennies (or 100 pence) make a pound, a dollar, a euro, etc.
This sweet only costs a penny.
If you have two pennies, you have two pence.
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.
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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
—
For introduces a clause with a subject and a to-infinitive
It's not good for you to be too relaxed.
your
Pronoun
—
Your things are things which belong to you.
Can I eat some of your ice-cream please?
thought
Noun
—
When you have a thought, you have an idea or concept in the mind.
I have a thought about the answer to that problem.
—
Consideration.
I will give your words some thought.