"
As others have pointed out, there are dialects in which singular
you is used with “is”. There is a logic here, even though it’s not Standard English. The logic is that if you are talking to one person, you use a verb that is singular, “is”, and if you’re talking to more than one, you use a verb that is plural, “are”. Standard English is not logical here. It uses a plural form of “to be” to indicate both singular and plural
you.
The reason is historical. Second person singular was originally
thou and the pronoun
you was always and only the plural form. When
thou lost its place in the pronoun order (along with the direct object form
thee), the plural form “you” rushed in to fill the gap. That meant that Standard English began using a plural pronoun to refer to one person, a completely illogical band-aid, but a necessary one since
thou/thee was lost. (Obviously this is an oversimplified evolution—it was not an overnight process.)
This need for singular and plural
you has caused a number of changes in the language, although none is Standard English. In one case you get the verb distinction of “you is” versus “you are”. In another, you get a plural
you being created, with forms like
y’all, yous, and
you guys. In both cases, speakers are trying to distinguish between talking to one person and more than one, a distinction that is lost in modern Standard English.
Standard English is the poorer dialect here, using “you are” to refer to both singular
and plural. The fact that SE uses a plural form of “to be” to do that begins to sound illogical and grating once you realize it."
First thing that pulled up.
it's an interesting read.