Look at these examples to see how defining relative clauses are used.
Are you the one who sent me the email?
The phone which has the most features is also the most expensive.
This is the video that I wanted to show you.
The person they spoke to was really helpful.
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.
Defining relative clauses give us essential information – information that tells us who or what we are talking about.
The woman who lives next door works in a bank.
These are the flights that have been cancelled.
We usually use a relative pronoun or adverb to start a defining relative clause: who, which, that, when, where or whose.
who/that
We can use who or that to talk about people. that is more common and a bit more informal.
She's the woman who cuts my hair.
He's the man that I met at the conference.
which/that
We can use which or that to talk about things. that is more common and a bit more informal.
There was a one-year guarantee which came with the TV.
The laptop that I bought last week has started making a strange noise!
Other pronouns
when can refer to a time.
Summer is the season when I'm happiest.
where can refer to a place.
That's the stadium where Real Madrid play.
whose refers to the person that something belongs to.
He's a musician whose albums have sold millions.
Omitting the relative pronoun
Sometimes we can leave out the relative pronoun. For example, we can usually leave out who, which or that if it is followed by a subject.
The assistant [that] we met was really kind.
(we = subject, can omit that)
We can't usually leave it out if it is followed by a verb.
The assistant that helped us was really kind.
(helped = verb, can't omit that)
Do this exercise to test your grammar again.
Hello, I have a question about the difference between ""which" and" where".
Eg:- I know a great little restaurant .... we can get lunch
- Jane can not remember the name of the restaurant.... she ate her favorite roasted duck.
Why we use " Which" instead of "where". Thank you in advance!
Hi thebaongoc,
Good question! Let's compare some examples.
Using "where" adds a new subject (in capital letters, below), which does a new action (e.g. "we can get lunch"). The action happens in the previously mentioned noun ("a great little restaurant").
Using "which" adds further information about the previously mentioned noun, "a great little restaurant".
Note that these are not actions by somebody/something IN the restaurant. These are extra information ABOUT the restaurant itself.
People sometimes think that places always use "where" but, as you can see, this isn't true. It depends on whether you want to describe more about the place itself (using "which"), or show an action by somebody/something else that happens in that place (using "where").
Does that make sense?
Jonathan
LearnEnglish team
I have a question relating to this topic. Please help!
Which of these is correct? Combine 2 sentences into one using Relative Clause
1. The professor works in my university. She is from German.
-> (a) The professor who works in my university is from German.
-> (b) The professor who is from German works in my university.
(a) or (b) is correct? It really confuses me. I don't know which clause should go first, especially when the "The professor" and "She" are both subjects of the sentences.
Hello Annie293,
First of all it should be 'from Germany' not 'from German' - 'Germany' is the name of the country, while 'German' is the adjective. We would also say 'at the university' rather than 'in...'
Other that that, both sentences are grammatically correct in terms of structure. However, I think the first one (a) is better. The reason is that defining relative clauses (which you have here) serve to identify the thing you are talking about so that new information can be provided. For example:
Here the relative clause 'who lives next door' identifies the man. It represents shared knowledge - something you already know - so that you can tell which man I am talking about. The main clause gives you new information - something you did not know. We can apply this to your example and ask which piece of information is probably known and which is new. The most likely answer is that you know the professor works at your university but you did not know that he/she is from Germany. Therefore the first sentence (a) is most likely.
The second sentence (b) would be used if, for example, you had a group of professors from different countries and you wanted to say which of the professors you are talking about. Not a very likely situation, I think.
Peter
The LearnEnglish Team
Hello,
Could you please explain to me why we have "have sold" instead of "have been sold" in the sentence "He's a musician whose albums have sold millions.
Thank you in advance!
Hello kate_d,
'sell' is a verb that can be used ergatively, which basically means that when it is used intransitively, it has a passive meaning. You can read more about this and see a list of other similar verbs on our Ergative verbs page.
If you have any other questions, please feel free to ask us on that page.
Best wishes,
Kirk
LearnEnglish team
Thank you for making it clear! I do appreciate your help.
I have a question about changing a/an to the in some relative clauses.
eg. Our principal wants to see an architect. He designed our school library.
ans. Our principal wants to see "the" architect who designed our school library.
why we need to convert the "an" to "the"?
eg. I met an old lady. She was one hundred and two years old.
ans. I met "an" old lady who was one hundred and two years old.
why we do not need to convert that "an" to "the"
there are more eg for not converting the "a/an" to "the"
-There was a one-year guarantee which came with the TV.
-He is a musician whose albums have sold millions.
-He called a plumber who he found online.
-They ate at a restaurant that serves only vegan dishes.
-We found a shop that sold old records.
why?
Hi Zozary,
Using "the" normally means that the speaker thinks the listener knows which particular thing he/she is referring to. Often, this is because there is only one of that thing existing in that local context.
If you say this:
It means that there is only one old lady of that age in this local context, and both the speaker and listener know that. Maybe she is a famous old lady in that town, for example. The sentence is grammatically fine. However, in ordinary circumstances, we probably do not know for sure that there is only one lady of that age, and the speaker probably cannot assume that the listener knows who the old lady is. So, it's more likely to say:
Often, when the speaker mentions something for the first time in the conversation, the speaker will use "a/an" if he/she introduces some new information (e.g., "I met an old lady" - it's a new conversation topic) and the speaker thinks the listener doesn't know which exact person/thing it refers to.
About your other examples:
Again, you could use "the" in any of these sentences, if there is only one thing in that context (e.g. We found the shop that sold old records - if there is only one shop selling old records in that town) and you assume that the listener knows this too.
I hope that helps to understand it.
Jonathan
LearnEnglish team
So, we can use either "a/an" or "the" in the above sentences.
The only difference is that using either of them depends upon whether the listener gets exactly what the speaker is trying to mention which or not.
When both the speaker and the listener get what they are talking about, we use "the".
If not, we use "a/an".
That problem has been in my mind like forever.
Thank you for clearing that one problem in my mind. I really appreciate your help, Sir.
Zozary