Personal pronouns are pronouns used as substitutes for proper or common nouns. All known human languages have personal pronouns. English in common use today has seven personal pronouns I we you he she it they
Demonstratives are deictic words (they depend on an external frame of reference) that indicate which entities a speaker refers to and distinguishes those entities from others. The demonstratives in English are this, that, these, those, yonder, and the archaic yon, possibly followed by one(s) in the case of pronouns, as explained below.A demonstrative determiner modifies a noun:
This apple is good.
I like those houses.
A demonstrative pronoun stands on its own, replacing rather than modifying a noun:
This is good.
I like those
