Englishfor English speakers
upon
Preposition
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on or onto
The police were called upon to save him.
The snow fell gently upon the lake.
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going to happen
Christmas is almost upon us.
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at (a time)
Upon his death, she became the owner of the store.
guard
Noun
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A guard is a person or a group of people who watch something and try to stop anything bad from happening to it.
After leaving the police he worked as a security guard at an airport.
The inmate was beaten by a prison guard while other guards watched.
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A guard is something that is a barrier between you and something dangerous.
You push a button and a guard comes down to keep your hands out of the machine while it works.
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A guard is a position on a basketball team who moves the ball to help their team gain points
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A guard is an offensive position in American football who plays either side of the center.
guard
Verb
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If you guard something, you watch it and try to stop anything bad from happening to it.
The front gate was guarded by Iraqi soldiers.