This is the book ___ I told you about.
This is the book which/that I told you about.
Paris, ___ is a beautiful city, is my home.
Paris, which is a beautiful city, is my home.
He’s the teacher ___ helped me.
He’s the teacher who/that helped me.
The man ___ we met is from Canada.
The man we met is from Canada.
He’s the actor ___ everyone knows about.
He’s the actor whom everyone knows about.
She’s the girl ___ brother plays guitar.
She’s the girl whose brother plays guitar.
My dad, ___ loves fishing, is retired.
My dad, who loves fishing, is retired.
The phone ___ I bought is great.
The phone which/that I bought is great
This is the person ___ we talked about.
This is the person we talked about.
The painting ___ was stolen is priceless.
The painting that/which was stolen is priceless.
Can you see the dog ___ is barking?
Can you see the dog which/that is barking?
She spoke to Tom, ___ she hasn’t seen in years.
She spoke to Tom, whom she hasn’t seen in years.
She’s the woman ___ car broke down.
She’s the woman whose car broke down
The bike ___ I borrowed was red.
The bike I borrowed was red.
The house ___ he grew up in is famous.
The house where he grew up is famous.
The man ___ car was stolen is my neighbor.
The man whose car was stolen is my neighbor.
Mr. Smith, ___ is a famous author, lives here.
Mr. Smith, who is a famous author, lives here.
The team ___ won the match was amazing.
The team which/that won the match was amazing.
The car ___ I sold was expensive.
The car I sold was expensive.
The student ___ you helped won a prize.
The student whom you helped won a prize.
When can you omit a relative pronoun in defining clauses?
You can omit the pronoun when it’s the object of the clause.
Why can't 'that' be used in non-defining clauses?
"That" cannot be used in non-defining clauses because it is reserved for defining relative clauses, which specify essential information.
When should you use 'whom' instead of 'who'?
When it functions as the object of a verb or preposition in the sentence.
In formal English, where should you place a preposition in a relative clause?
In formal English, the preposition should be placed before the relative pronoun in a relative clause.
How is 'whose' used to refer to things or animals?
'Whose' can be used for possession even with non-human nouns.