Providing Extra Information
Defining and Non-defining Relative Clauses
Relative pronouns are used to connect two clauses in order to either define or provide additional information about a subject or an object.
who - persons
which - things
where - places
when - times
that - both persons and things
whose - possessive
Defining Relative Clauses
Defining relative clauses provide information which is essential to completely understand the sentence.
That is the platform which was chosen by our sysop.
This is the debugging method which was chosen by our CEO.
This is the method we use to debug the program which was chosen by our CEO.
Defining relative clauses identify persons or things that otherwise would not be automatically understood.
Relative Pronouns in Defining Relative Clauses
|Person||Thing||Subject||who, that||which, that||Object||that, who, whom||that, which||Possessive||whose||whose, of which|
Non-defining Relative Clauses
Non-defining relative clauses provide information which is not essential, but adds additional information.
"Jonathan, who has never been to see a therapist, was asked to clean up his desktop."
"Shelly, who has never been to France, was tasked with reloading the toner cartridge. "
"Jason, who visited Italy last summer, was chosen to design the default settings."
Correct punctuation is essential in non-defining clauses. A comma is placed both before and after the non-defining clause.
Relative Pronouns in Non-Defining Relative Clauses
|Person||Thing||Subject||who||which||Object||who, whom||which||Possessive||whose||whose, of which|