Relative Pronouns
For people
For places, times and reasons
When can you use it?
Is used after a noun to make it clear which person or thing we are talking about
Who / That
Whose
Whom
Where do we use them?
After a NOUN
The man who / that lent me the book
The man whose book I borrowed
Formal style
The man from whom I borrowed the book
For objects
Which / That
The book of which the title is 'Peace'
The book which / that I borrowed
When / That
Where
Why / That
The library where we met
The day when / that we met
The reason why / that I was at the library ..
Formal cases
Which after a preposition
The day on which we met
The library at which we met
Can we drop the relative pronoun?
=
The book which / that I borrowed
The book I borrowed
For who, whom, that and which
Yes, it is possible when the information is related to the object and not the subject
And you can not drop whom when it is next to prepositon
The man from whom I borrowed the book
For whose, which or where
It is not possible
For when and why
It is possible
