one做先行词时，关系代词用who来引导
定语从句宜用who来引导：当先行词是those, she ,he ,they, ones, anyone, someone, no one等指人的代词时。
例句：
One minus one is zero.
一减一等于零。
No one likes to lose.
没人愿意失败。
扩展资料
One tries ones best.
一个人尽其所能。
No one was at home.
没有人在家。
One more, please!
请再来一个！
