定语从句中先行词是all people时,关系词是用who还是that答:只能用THAT,见如下第一点:限制性定语从句只能用that 的几种情况 1.当先行词是anything, everything, nothing (something 除外), few, all, none, little, some 等代词时,或者是由every, any, all, some, no, little, few, much 等修饰时 (1) Have you taken down everything that Mr. ...