a relative clause that describes or supplements but is not essential in establishing the identity of the antecedent and is usually set off by commas in English. In This year, which has been dry, is bad for crops the clause which has been dry is a nonrestrictive clause.
That vs. WhichTo understand when to use that vs. which, it’s important to keep in mind the difference between and restrictive and nonrestrictive clauses. In formal American English, that is used in restrictive clauses, and which in used in nonrestrictive clauses. A restrictive clause contains information that limits the meaning of the thing being talked about. For example, in the sentence “Any book that you like must …
Supremacy ClauseRead more in this article about some frequently asked questions and fun facts related to our definitions.
- nonreturn valve,
Compare restrictive clause.
Origin of nonrestrictive clause
First recorded in 1925–30
Also called descriptive clause.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019