you who is

   You is an odd word in that it is frequently used in a singular sense but always attached to a plural verb, which is why we write, "You are a nice person" and not "You is a nice person." Most of the time this causes no problem, but just occasionally even the most careful user may be brought up short by the inherent inconsistency between the singular pronoun and plural verb, as here: "If you happen to be driving on a Nevada highway and a cow steps into your path, totaling your vehicle and sending you to the hospital, it will be you who is liable to the rancher for the cost" (New Yorker). Odd as "you who is" may sound, it is indeed correct. (For a discussion of the grammar involved, see i, ME.) However, such constructions are also often-as in the example-at least a touch awkward. Almost always grammar can be preserved and sentence flow improved by getting rid of the // and recasting accordingly, e.g., "you may be held liable" or "legal liability will rest with you."

   See also it.