An essential relative clause provides necessary, defining information about the noun. On the other hand, non‐ essential relative clauses provide additional, non‐necessary information about the noun.

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: I won’t ...

For each pair of sentences below, think about ways of combining the two sentences into one new sentence containing a “restrictive relative clause.” Recall that a restrictive relative clause, which is ...

You can play in the fields down by the river, but not in the woods. You can play in the fields down by the river, but, er, not in the woods. and as co-ordinating conjunction Note that and when it is ...