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单词 once
释义 once
I. \ˈwən(t)s\ adverb
Etymology: Middle English ones, anes, from gen. of on, an one — more at one
1. : one time and no more : just one time : one time only
 < visited her father once a month >
 < spoke to her once and didn't see her again >
 < have read it only once >
2.
 a. : at any one time : in any possible contingency : under any circumstances whatsoever
  < don't once let them know >
  < couldn't once succeed in doing what was asked >
 b. : at all : only, merely, just
  < if you thought about it once, you'd see I'm right >
 c. : ever
  < if they once lose hope, their failure is certain >
  < didn't once guess the truth >
  — usually used in negative or conditional clauses
3.
 a. : at some indefinite time in the past : at one time : formerly
  < once knew her well, but had now forgotten her name >
  < was once very happy >
 b. archaic : at some indefinite time in the future : at some future time : someday
4. obsolete
 a. : one time for all times : once and finally : once and for all
  < if I have him not, I am resolved to die a maid, that's once — John Dryden >
 b. : in short : in a word : by way of summing up
5. : by one degree of relationship
 < is a cousin once removed >
 < lives a life only once removed from that of animals >
6. dialect — used as a vague sentence expletive especially in imperative constructions
 < come here once >
 < hand me that hammer once >

- once and a while
- once and for all
- once in a way
- once in a while
- once upon a time
II. adjective
: that once was : former
 < the once province of Britain — J.N.Pomeroy >
III. noun
(-s)
: one single time : one sole time
 < thought it was only the once — Anne D. Sedgwick >
 < please listen to me just this once >
: one time at least : one time by way of exception
 < for once you seem to know what I'm talking about >

- all at once
- to once
IV. conjunction
also once that
: when once : if once : at the moment when : as soon as
 < once the job is finished, we'll have nothing to worry about >
 < once that he finds you, you'll have to be careful >
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更新时间:2024/9/22 18:34:18