Pronouns are words used as substitutes for proper or common words.
For example: Mary brushed her hair.
Instead of saying Mary brushed Mary's hair, you can just use the pronoun her.
I am not too sure if these are the only such lines, but here is one deifinitely good answer:
'My will to her consent is but a part.
An she agreed within her scope of choice"
They are from Scene 2.
Those words mean that Capulet's daughter is free to choose her husband, at least in part (with the father's agreement)
