Relative clauses: non-defining relative clauses
Look at these examples to see how non-defining relative clauses are used.
Jack, who's retired now, spends a lot of time with his grandchildren.
We want to see the new Tom Carter film, which was released on Friday.
My sister, whose dog I'm looking after, is visiting a friend in Australia.
Try this exercise to test your grammar.
Read the explanation to learn more.
Grammar explanation
Relative clauses give us information about the person or thing mentioned.
Non-defining relative clauses give us extra information about someone or something. It isn't essential for understanding who or what we are talking about.
My grandfather, who's 87, goes swimming every day.
The house, which was built in 1883, has just been opened to the public.
The award was given to Sara, whose short story impressed the judges.
We always use a relative pronoun or adverb to start a non-defining relative clause: who, which, whose, when or where (but not that). We also use commas to separate the clause from the rest of the sentence.
who, which and whose
We can use who to talk about people, which to talk about things and whose to refer to the person or thing that something belongs to.
Yesterday I met my new boss, who was very nice.
The house, which is very big, is also very cold!
My next-door neighbour, whose children go to school with ours, has just bought a new car.
After the port there is a row of fishermen's houses, whose lights can be seen from across the bay.
Places and times
We can use which with a preposition to talk about places and times. In these cases it's more common to use where or when instead of which and the preposition.
City Park, which we used to go to, has been closed down.
City Park, where we used to go, has been closed down.
December, which Christmas is celebrated in, is a summer month for the southern hemisphere.
December, when Christmas is celebrated, is a summer month for the southern hemisphere.
However, when we use which without a preposition, we can't use where or when.
Centre Park, which we love, is always really busy on Saturdays.
February, which is my favourite month, lasts 29 days this year.
Do this exercise to test your grammar again.
They put a party together for me , that/which was surprising.
Is using that here correct?
Hello Khaled.,
No, you can't use that in this example. This is because it is a non-defining relative clause; that is only used in defining relative clauses.
Peter
The LearnEnglish Team
How can i know if it is defining or not if there is not comma , and also aren't the writer the one who chooses is this a defining or not , to make it easier to read and understand.
Thank you for replying to the previous comment.
Hello again Khaled.,
All non-defining relative clause have commas around the relative clause, so that is one way to identify them in exam tasks and the like.
In terms of meaning, defining relative clauses identify which thing one is talking about. For example:
The relative clause (in bold) identifies which house the speaker is referring to. it enables you to say 'this house, not that house'.
Non-defining relative clauses do not identify something but rather provide extra information about it - possibly interesting or important information, but not information which tells us 'this not that'. For example:
The relative clause (again in bold) gives the reader some extra information - in this case, the speaker's opinion of the situation - but it does not tell us which party they are talking about; it does not allow us to say 'this party, not some other party'.
Peter
The LearnEnglish Team
I think number 1. Beacause there’s no comma on top.
5. The hostel, 𝐰𝐡𝐞𝐫𝐞* we've stayed at several times, is simple but clean. (Answer didn't accepted)
I don’t know why this answer was considered wrong, even though it was corrected with 𝐰𝐡𝐢𝐜𝐡 instead of 𝐢𝐧 𝐰𝐡𝐢𝐜𝐡.
So, I think that we can say:
-The hostel, 𝐰𝐡𝐞𝐫𝐞 we've stayed at several times, is simple but clean.
or
-The hostel, 𝐢𝐧 𝐰𝐡𝐢𝐜𝐡 we've stayed at several times, is simple but clean.
Hello MounirBr44,
Yes, that's not quite right. You can use a relative adverb (where or when), or you can use a relative pronoun (which) with a preposition, but you shouldn't use a relative adverb with a preposition. In other words where is OK; which + at is OK; where + at is not OK.
It is correct to say:
The hostel, where we've stayed several times...
The hostel, at which we've stayed several times...
The hostel, which we've stayed at several times...
However, it is not correct to say:
*The hostel, at where we've stayed several times...*
*The hostel, where we've stayed at several times...*
Peter
The LearnEnglish Team
Great!
Thank you Mr Peter for your answer. It was clear and easier.
Hello,
I'd like to know if these three ways of expressing the same meaning are correct.
"January, when I have vacations, is summer."
"January, the month in which I have vacations, is summer."
"January, which I have vacations in, is summer."
Thanks!
Hello JScar92,
All three are grammatically correct. The first is probably the most common option. The second is quite formal.
Peter
The LearnEnglish Team