Relative pronouns CANNOT be omitted when they are the subject of the clause; subjects are essential information in a sentence and cannot be omitted. The cell phone that rang in class belonged to the ...

A relative clause can be used to give additional information about a noun. They are introduced by a relative pronoun like 'that', 'which', 'who', 'whose', 'where' and 'when'. For example ...

A relative clause is a type of subordinate clause that modifies a noun. For example, ‘Mr and Mrs Selfie arrived in the car that they had bought this morning.’ If often does this by using a ...