NON-DEFINING RELATIVE CLAUSE or NON RESTRICTIVE CLAUSE

NON -DEFINING OR NON RESTRICTIVE CLAUSE are placed after definite nouns.THIS CLAUSE doesn't identify or describe  a person or thing,but adds information about  a particular person. thing,or continues the narrative; This clause  is always separated from there nouns by commas. FOR EXAMPLE;
Go and see the nurse ,who will bandage your leg.
My great -uncle, whom I have never met,is coming to visit us.
We can meet at the Regent Hotel, which is on the main road.
*WHEN and WHERE BE USED like relative pronouns
We went to the Regent Hotel,where we found Jane waiting for us.
*A COMMA is needed before this clause .If the relative clause comes in the middle of the main clause,commas are needed both sides of it.
My brother,who lives in London, is coming in December.
*In this kind of relative clause the relative pronoun
*In this kind of relative pronoun acts rather like a co-ordinating conjunction + personal pronoun. For example:
-We can meet at the Reagent Hotel, which(=and it) is on the main road.
-Go and see the nurse, who(= and she) will bandage your leg fot you.
-My great-uncle, whom I've never met(= and I've never met him),is coming to visit us.