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.
simple
Adjective
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A simple task is easy to do and easy to understand.
Baking this cake is very simple as it only has 3 steps.
It's a simple book for learners to read and understand.
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Something that is simple is basic and not complicated.
She was poor and only had a simple dress.
Their plan was very simple.
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A simple person is not intelligent (we sometimes use this in a bad way)
He isn't a bad boy, he's just a little simple.
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In grammar, the simple aspect is used when the speaker sees the situation as complete (compare progressive aspect).
"I run" is the present simple; "I'm running" is the present progressive.
simple
Noun
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A simple is a medicine that is prepared only from one plant.
plan
Noun
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A plan is a clear idea of what you will do, often for a particular goal.
Have you made any plans for tomorrow?
The school has announced a plan to open two new classrooms.
Buying the new factory is part of our growth plan.
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A plan is a technical drawing of a room, a building, a city, etc.
The plans show this area as housing, with no shopping nearby.
plan
Verb
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If you plan something, you decide what you will do.
We need to plan ahead so that we'll be ready.
We planned out the wedding very carefully.
I didn't plan to be here, but John asked me to come.
When do you plan on starting the new job?