Englishfor English speakers
allowance
Noun
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An allowance is money that someone gives for doing things, often for going to school.
Susan gets an allowance of five dollars a week.
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An allowance is a small amount of credit that someone gives to you.
Bobby's parents let him have an allowance of coins for playing games.
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Allowance is an act of allowing or granting of something by someone.
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.
expense
Noun
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An expense is something for which you spend money.
Food is a huge expense for many people around the world.
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An expense is an amount of money that you spend.
If your income is less than your expenses, you have a serious problem.
The company paid all of his expenses when he was in Shanghai.
The building was repaired at great expense.
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If you do mathx/math at the expense of mathy/math, mathx/math hurts mathy/math because it makes mathy/math have less money, less time, less social status, etc.
She often makes jokes at her own expense.
We have to decide whether safety at the expense of freedom is worth the cost.