Suggested Answers for Check Questions

It can only be used in finite clauses while relative pronouns may introduce both finite and non-finite clauses. It does not allow pied-piping, i.e. it must be separated from a preposition it is the complement of (e.g. the man with whom they talked – the man whom they talked with - *the man with that they met – the man that they talked with). As ‘that’ is a complementizer, there is no associated gap of the moved element after the preposition.