Englishfor English speakers
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.
authentication
Noun
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Authentication is the process of verifying that something is genuine or valid.
and
Conjunction
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You use and to talk about two things at once.
I like singing and reading.
Mary and Jane went on a holiday together.
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You use and when you are listing a few things and you are now on your last item of the list.
I like singing, reading, cycling and playing soccer.
I used to like this girl from my class as she is pretty, gentle and caring.
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And is used when you are putting two sentences together.
She came into the store, shouted at the cashier, and left.
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Used to show what happened after something else.
The alarm went off and I woke up.
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And is used to join certain numbers together.
Two hundred and thirty-five people went missing after the earthquake.
security
Noun
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Security is safety.
Traditionally, Japanese workers have had good job security. In fact, they usually had a job for life.
Since the attack, many Americans have lost their feeling of security.
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Security is the people and things that keep you safe.
After the bombing, the airport increased security.
If you see a problem, please call security.
layer
Noun
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A layer is a covering material or substance.
When we got up in the morning, everything was covered by a thin layer of snow.
The cream forms a germ-fighting layer over the skin.
How many layers of clothing do you have to wear in the winter?
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A layer is a level in an organisation.
The company is trying to reduce the number of management layers.
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A layer is a person who lays something, (e.g., carpet, bricks, etc.).
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A layer is a chicken kept to lay eggs.
layer
Verb
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If you layer something, you make layers.
Layer the pasta in an ovenproof dish with the tomatoes, bacon and peas, seasoning each layer.