English Grammar Guide


Non-Defining Relative Clauses: Object


Usage - Non-Defining Information: Object

We can use a relative clause to give more information about the object. We don't need a second sentence. The information isn't essential for understanding which thing it is.

  • To give more information about the object
  • The information is not essential

Grammar - Non-Defining Relative Clauses

We use who in place of the person.

We use which in place of the thing.

We use a comma.

We do not use that when the clause is non-defining.

  • SUBJECT PRONOUNRELATIVE PRONOUN
  • PERSONwho
  • THINGwhich
  • OBJECT PRONOUN RELATIVE PRONOUN
  • PERSONwho
  • THINGwhich
  • Use a comma: , ...

Examples - Non-Defining Information: Object

MAIN SENTENCEINFORMATION
I saw a doctor.He was very kind.
I've just finished this book.I loved it.

Examples - Non-Defining Information: Object

I saw a doctor, who was very kind.
I've just finished this book, which I loved.

Be Careful!

  • We can't use that with non-defining relative clauses:
  • I saw a doctor, that was very kind.
  • I saw a doctor, who was very kind.
  • I've finished this book, that I loved.
  • I've finished this book, which I loved.
  • We need a RELATIVE PRONOUN with non-defining relative clauses:
  • I've finished this book, I loved.
  • I've finished this book, which I loved.
Symbols & Abbreviations
Correct
Incorrect

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