Although some handbooks say otherwise, that and which are both regularly used to introduce restrictive clauses in edited prose. Which is also used to introduce nonrestrictive clauses. Learn the meaning and usage of which as a determiner, pronoun and relative clause introducer in English. Find out how to use which in questions, relative clauses, of phrases and idioms with examples and translations. We rigorously test pocket sprung, memory foam and hybrid mattresses to bring you our in-depth reviews. Use our expert advice to choose a Best Buy mattress you'll love sleeping on. Learn the meaning, pronunciation, and usage of the interrogative pronoun which , as well as its relative and adjectival functions. Compare which with that, what, and whose, and see examples and idioms.
