| 释义 |
once /wʌns/ ad. | n. | conj. | a. | phr.
I ad.
1. 一次，一回
I saw him once and never again. 我见过他一回，以后再也没有见到过。
I shall help you once but then you must do it by yourself. 我将帮你一次，不过以后你就得自己做了。
Once a week, on Tuesdays, she wrote a letter to her mother. 她一星期一次，总在星期二，给她母亲写信。
Some trees only bear fruit once every twenty-five years. 有些果树每隔25年才结果一次。
2. 曾经，一度
a once rich province 一度富饶的省
This crime fiction was once very popular but nobody reads it today. 这部侦探小说一度很受欢迎，可是现在没有人看了。
She was once my best friend. 她曾是我最好的朋友。
3. [用于条件句、否定句等]一旦
if you once forget it 你一旦忘记它的话
4. [用于否定句]一次也；完全
I have not seen him here once. 我在这里一次也没见到过他。
Don't once leave a mistake uncorrected. 决不要放过一个错误。
I couldn't once understand what he meant. 我完全不能理解他的意思。
5. 乘以一
Once eight is eight. 一八得八。
6. (亲属关系上)隔一亲等，隔一代
a cousin once removed 同(外)曾祖的堂(或表)兄弟(或姐妹)
7. 〈方〉立刻
Hand me that hammer once. 快把锤子递给我。
8. 〈古〉将来总有一天
She must die once. 她总有一天要死的。
II n.
一次，一回
Once is enough for me. 我一次就够了。
Do it just this once. 就做这一次。
I met her just the once. 我见到她仅此一次。
III conj.
一旦…(就…)；一…(就…)
Once you have taken the examination, you'll be able to relax. 你一旦考过，就可以轻松一下了。
Most boys like to swim once they have learned how. 男孩一学会游泳，多半就都喜欢上了。
IV a.
从前的；一度的
the once capital of the nation 那个国家的旧都
end a once serious addiction problem 结束一度严重的吸毒问题
[< ME ones, 所有格 < on one] phr. all at once 1. 突然，忽然 All at once the wind came up. 突然刮起了风。 2. 同时，一起 Don't talk all at once. Speak one by one. 大家不要一起发言，一个一个讲。 at once 1. 马上，立刻 You must come at once. 你必须马上就来。 2. 同时，一起 Everything happened at once. 所有的事都一起发生了。 at once ... and ... 既…又… at once stern and tender 既严肃又温柔 This book is at once interesting and instructive. 这本书既有趣又有教益。 every once in a way 有时，偶尔 every once in a while = once in a while
for once in a way= once in a way
for this (that) once(或for once或just for once)就此(那)一次；破例一次
He beat me for once. 他只有这一次赢了我。
He doesn't usually allow people to leave work early but he'll let you do it just for once. 他通常不准许员工早退，但这次会破例让你早走。
more than once 不止一次，多次
I have read the book more than once. 我不止一次读过这本书。
not once 一次也不，从来不
Not once have you done as I have asked. 你从来也没有像我要求你那样做过。
once a ..., always a ... 〈谚〉本性难改
once again 再一次
Tell me just once again. 你就再告诉我一次吧。
once and again 1. 一而再，再三，屡次
Once and again the parrot said, “Come in”. 那鹦鹉一再说“进来”。
2. 有时，偶然
Once and again this sort of thing is bound to happen. 这种事情有时总是要发生的。
once and away 1. = once (and) for all
2. = once in a way
once (and) for all 一劳永逸地，一次了结地；永远地，彻底地
We have decided to settle the matter once (and) for all. 我们已经决定一劳永逸地解决这个问题。
once and future 永远的，千秋万代的
Once bit (或 bitten), twice shy. 见 bite
once in a blue moon 见 blue moon
once in a way 破例地；偶尔，间或
once in (或 and) a while 偶尔，间或
I like a drink in the evening once in a while. 我偶尔喜欢在晚上喝上一杯。
once more = once again
once or twice一两次，几次
I have been there once or twice. 我去过那儿一两次。
once that 一旦…(就…)
once too often 多次幸免这次遭殃；多次成功这次受挫
He exceeded the speed limit once too often and was fined. 他多次超速开车未被发现，这次可被罚了款。
once upon a time 见 time
to once 〈方〉马上，立刻 |