GRAMMAR SECTION: NON-DEFINING RELATIVE CLAUSES
A non-defining relative clause is a phrase or sentence that is added to a sentence for more information. It is not essential information. It is extra information. If you remove the clause that is in between or after a comma, the sentence remaining should make sense completely without it.
a) My brother, who is a doctor, goes skydiving once a month.
Non-defining relative clauses use relative pronouns: who, which, where, when, why, whose, whom.
Who is for people. Which is for things. Where is for places. When is for times. Why is for reasons. Whose is for possession. Whom is for people who are the object of the relative clause.
Form: relative pronoun + verb + noun/adverb…
b) Even though the car accident was very bad we didn’t get hurt,which was very lucky.
In example A, the relative clause is extra information put in the middle of the sentence after the subject.
In example B, the relative clause is at the end of the sentence, after a comma and before a full stop. Example B uses a relative clause that comments on the sentence as a whole, but Example A provides extra information on the subject.
*Note that it is INCORRECT to use that in a non-defining relative clause.
Exercise 1.- Grammar
Think of an appropriate phrase to use as a non-defining relative clause to complete the sentence.
a) My sister, ________________________________________, is happily married.
b) The school, ________________________________________, is the best in the city.
c) The church, ________________________________________, is 500 years old.
d) The stadium, ________________________________________, is used every weekend.
e) My friend, ________________________________________, is having a party tonight.
f) Her uncle, ______________________________, is flying here to visit them this weekend.
g) The mountains, ________________________________________, are covered in snow.
h) His father, ________________________________________, is very proud of him.