In the English grammar, a clause's a pair or group of words that consist of a subject and a predicate, although in some languages and some types of clauses, the subject may not appear explicitly as a noun phrase. It may instead be marked on the verb (this's especially common in null subject languages). The most basic kind of sentence consists of a single clause; more complicated sentences may contain multiple clauses, including clauses contained within clauses. Clauses are often contrasted with… (More on Clause)