Is the pronoun you singular or plural?

English has both singular pronouns: He, She, Each, This;

and plural pronouns: They, All, These.

You can tell if a pronoun is singular or plural by looking at its verb:

He kicks the ball / They kick the ball;

Each man is an island / All women are volcanos;

This curdles if you leave it out overnight / These are sharp enough to cut your nose off.