Englishfor English speakers
not
Adverb
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"Not" makes the verb of a sentence have the opposite meaning.
I was not there.
I am not fat!
not
Conjunction
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The item before "not" is more correct or better than the item after "not".
I wanted tea, not coffee!
Meaning: I wanted tea. I did not want coffee.
It's stupid, not funny.
Meaning: It is stupid. It is not funny.
not
Interjection
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Used to indicate the sentence before is sarcastic or ironic. This means that the sentence has the opposite meaning.
I like doing lots of boring homework. Not!
Meaning: I do not like doing lots of boring homework.
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.
circuit
Noun
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A circuit is a loop that normally starts and finishes in the same place.
They ran a circuit around the park.
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A circuit is a closed route where electricity flows.
The electric circuit can hold 20 amperes.