英语词汇“once”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

once adv.

formerly:a once powerful nation.
a single time:We eat out once a week.
at any time;
ever:If the facts once became known, we'd be in trouble.
by a single step, degree, or grade:She's my first cousin once removed.

n. [uncountable]

a single occasion;
one time only:Once is enough.

conj.

if or when at any time;
if ever:Once the news is out, they'll hunt us down.
whenever;
as soon as:Once you're finished, you can leave.

adj.

former;
one-time:the once and future king.

Idioms

Idioms all at once, suddenly:All at once it started to rain.

Idioms at once:

immediately;
promptly:left at once.
at the same time;
simultaneously:They all sprang up at once.

Idioms once (and) for all, decisively;
finally:Let's settle this argument once and for all.

Idioms once in a while, sometimes;
occasionally.

Idioms once or twice, a very few times;
not frequently:I've only seen her once or twice.

Idioms once upon a time, (used as an opening phrase to give the setting for a fairy tale or similar story in the distant, imaginary past):Once upon a time there was a giant.

once adv.

at one time in the past;
formerly:I was a farmer once; a once powerful nation.
a single time:We ate there just once. We go to a movie once a week.
even a single time;
at any time;
ever:If the facts once become known, it will be just too bad.
by a single step, degree, or grade:a cousin once removed.
Idioms once and again, repeatedly:He has been told once and again not to slam the door.
Idioms once and for all, decisively;
finally:Let's settle this problem once and for all.Also, once for all.
Idioms once in a while, at intervals;
occasionally:She stops in to see us once in a while.
Idioms once or twice, a very few times;
infrequently:I've seen her in the elevator once or twice.
Idioms once upon a time, at some unspecified past time, esp. a long time ago:Once upon a time, in a faraway land, there lived a prince and princess.

adj.

former;
having at one time been:the once and future king.

conj.

if or when at any time;
if ever.
whenever;
as soon as:Once you're finished, you can leave.

a single occasion;
one time only:Once is enough.
Idioms all at once:
- simultaneously:The children were running, screaming, and throwing things all at once.
- suddenly:All at once the rain came down.
Idioms at once:
- at the same time;
  simultaneously:Don't all speak at once.
- immediately;
  promptly:Tell him to come at once!

bef. 1150; Middle English ones, Old English ānes, origin, originally genitive of ān one; replacing Middle English enes, Old English ǣnes once, equivalent. to ǣne once (origin, originally instrumental of ān) + -es adverb, adverbial suffix; see -s¹

once /wʌns/ adv

one time; on one occasion or in one case
at some past time; formerly: I could speak French once
by one step or degree (of relationship): a cousin once removed
(in conditional clauses, negatives, etc) ever; at all: if you once forget it
multiplied by one
once and away ⇒ conclusively
occasionally
once and for all ⇒ conclusively; for the last time
once in a while ⇒ occasionally; now and then
once or twice, once and again ⇒ a few times
once upon a time ⇒ used to begin fairy tales and children's stories

conj

(subordinating) as soon as; if ever or whenever

one occasion or case: you may do it, this once
all at once ⇒ suddenly or without warning
simultaneously
at once ⇒ immediately
simultaneously
for once ⇒ this time, if (or but) at no other time

Etymology: 12th Century ones, ānes, adverbial genitive of on, ān one

单词	once
释义	WordReference Random House Learner's Dictionary of American English © 2024 once /wʌns/USA pronunciation adv. formerly:a once powerful nation. a single time:We eat out once a week. at any time; ever:If the facts once became known, we'd be in trouble. by a single step, degree, or grade:She's my first cousin once removed. n. [uncountable] a single occasion; one time only:Once is enough. conj. if or when at any time; if ever:Once the news is out, they'll hunt us down. whenever; as soon as:Once you're finished, you can leave. adj. former; one-time:the once and future king. Idioms Idioms all at once, suddenly:All at once it started to rain. Idioms at once: immediately; promptly:left at once. at the same time; simultaneously:They all sprang up at once. Idioms once (and) for all, decisively; finally:Let's settle this argument once and for all. Idioms once in a while, sometimes; occasionally. Idioms once or twice, a very few times; not frequently:I've only seen her once or twice. Idioms once upon a time, (used as an opening phrase to give the setting for a fairy tale or similar story in the distant, imaginary past):Once upon a time there was a giant. WordReference Random House Unabridged Dictionary of American English © 2024 once (wuns),USA pronunciation adv. at one time in the past; formerly:I was a farmer once; a once powerful nation. a single time:We ate there just once. We go to a movie once a week. even a single time; at any time; ever:If the facts once become known, it will be just too bad. by a single step, degree, or grade:a cousin once removed. Idioms once and again, repeatedly:He has been told once and again not to slam the door. Idioms once and for all, decisively; finally:Let's settle this problem once and for all.Also, once for all. Idioms once in a while, at intervals; occasionally:She stops in to see us once in a while. Idioms once or twice, a very few times; infrequently:I've seen her in the elevator once or twice. Idioms once upon a time, at some unspecified past time, esp. a long time ago:Once upon a time, in a faraway land, there lived a prince and princess. adj. former; having at one time been:the once and future king. conj. if or when at any time; if ever. whenever; as soon as:Once you're finished, you can leave. n. a single occasion; one time only:Once is enough. Idioms all at once: simultaneously:The children were running, screaming, and throwing things all at once. suddenly:All at once the rain came down. Idioms at once: at the same time; simultaneously:Don't all speak at once. immediately; promptly:Tell him to come at once! bef. 1150; Middle English ones, Old English ānes, origin, originally genitive of ān one; replacing Middle English enes, Old English ǣnes once, equivalent. to ǣne once (origin, originally instrumental of ān) + -es adverb, adverbial suffix; see -s¹ Collins Concise English Dictionary © HarperCollins Publishers:: once /wʌns/ adv one time; on one occasion or in one case at some past time; formerly: I could speak French once by one step or degree (of relationship): a cousin once removed (in conditional clauses, negatives, etc) ever; at all: if you once forget it multiplied by one once and away ⇒ conclusively occasionally once and for all ⇒ conclusively; for the last time once in a while ⇒ occasionally; now and then once or twice, once and again ⇒ a few times once upon a time ⇒ used to begin fairy tales and children's stories conj (subordinating) as soon as; if ever or whenever n one occasion or case: you may do it, this once all at once ⇒ suddenly or without warning simultaneously at once ⇒ immediately simultaneously for once ⇒ this time, if (or but) at no other time Etymology: 12th Century ones, ānes, adverbial genitive of on, ān one
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