English &quot;you&quot; is the grammatically plural (previously used also to denote formality, where it is not <i>semantically</i> plural) form, corresponding to French &quot;vous&quot;. The English grammatically singular form (&quot;thee&#x2F;thou&quot;) corresponding to French &quot;tu&quot; has generally fallen out of use, so &quot;you&quot; has in effect become the all-purpose 2nd-person pronoun, but its still <i>grammatically</i> plural.<p>Likewise, &quot;they&quot; is grammatically plural, regardless of its contextual semantics.