My great-uncle David Young, who has died aged 94, was a university lecturer in English and a linguist who wrote the books Introducing English Grammar and The Structure of English Clauses.
These books, first published in the 1980s, are still in print by Routledge and are held by more than 1,000 universities and public libraries worldwide. Their continued relevance lies in showing how grammar can be used to communicate according to context and social cues, not strict rules.