高三英语：once & one的一些常见习语

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once
once again / once more 再一次
It once again proves that the trend of history cannot be stemmed.
这再一次地证明，历史的潮流是谁也阻挡不了的。
注：不要把once again和once and again混淆，once and again作“再三；好几次”解，如：
Why did you make this kind of mistake once and again. 你为什么再三犯这样的错误？
once (and) for all 一次了结地；永远不再；一劳永逸地
This is not something that can be completed once for all. 这不是件可以一劳永逸的事情。
one
one and all 全部；大家
I would like to thank you, one and all. 谢谢大家。[常用于对一群人讲话的场合]
one and the same 同一个（的）；完全一样（的）
Dr Jekyll and Mr Hyde were one and the same person. 吉基尔博士和海德先生是同一个人。
one in a thousand 千里挑一的人或物；稀有的人或物
She is one in a thousand. She does her work quickly and conscientously and can always be relied on. 她这个人是极为难得，干活利索认真，又总是那么可靠。
Ultimately, you’ll realize that pleasure and pain can be ______.
A. one and all
B. one and same
C. one and the same
D. one in a thousand