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 ...

To find out the Grade Group, a pathologist looks at several samples of cells from your prostate. These are called biopsies. The pathologist grades each sample of prostate cancer cells based on how ...