Which of the following sentences contains a non-restrictive relative clause?
The book that I borrowed from the library is very interesting.
The book which I borrowed from the library is very interesting.
The book, which I borrowed from the library, is very interesting.
The book I borrowed from the library is very interesting.
Which of the following sentences contain a restrictive relative clause?
The book that I borrowed from the library is very interesting.
My brother, who lives in New York, is visiting us next week.
The car which was parked outside belongs to my neighbor.
The teacher, who is very knowledgeable, explained the concept clearly.
Which of the following sentences contain a non-restrictive relative clause?
The movie, which was directed by Steven Spielberg, won several awards.
The house that we bought last year needs some repairs.
My friend, who is a doctor, gave me some medical advice.
The laptop which I use for work is very efficient.
In a non-restrictive relative clause, the information provided is essential to the meaning of the sentence.