as - definition in the Learner's Dictionary - Cambridge Dictionaries Online

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English definition of “as”

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as

preposition, conjunction
 
 
strong /æz/ weak /əz/
as .... as A2 used to compare two things, people, amounts, etc: He's not as tall as his brother. She earns three times as much as I do.Similar and the sameDescribing people with the same qualities
WHILE B1 used to describe two things happening at the same time or something happening at a particular time: He was shot in the back as he tried to escape. I think your opinions change as you get older.Simultaneous and consecutiveOrder and sequence
FOR THIS PURPOSE A1 used to describe the purpose, job, or appearance of something or someone: She works as a waitress. It could be used as evidence against him.Conditions and characteristics
LIKE B1 in the same way: This year, as in previous years, tickets sold very quickly.Similar and the sameDescribing people with the same qualities
IN THIS WAY used to describe the way in which people see or think of something or someone: She was regarded as a great beauty in her day. Most people think of nursing as a female occupation.Defining and explaining
BECAUSE A2 because: You can go first as you're the oldest. As I'd never been to Poland before, I bought a guidebook.Connecting words which introduce a cause or reason
as if/as though B2 used to describe how a situation seems to be: It looks as if it might rain.Seeming and purporting to beFaking and pretendingConnecting words which introduce a cause or reason
as for B2 used to talk about how another person or thing is affected by something: I was pleased. As for Emily, well, who cares what she thinks.Quoting and making references
as from/as of formal starting from a particular time, date, etc: The new conditions are effective as of Monday.Simultaneous and consecutiveOrder and sequence
as to formal about: There's no decision as to when the work might start.Quoting and making referencesRegarding and concerningLinking and relating
(Definition of as from the Cambridge Learners Dictionary © Cambridge University Press)
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