what is a clause ?
Clauses are units of grammar that contain at least one predicate (verb) and a subject. A clause, therefore, contains a single verb group.A clause is different than a phrase. A clause is a group of words with a verb and a subject.
Instances of the same can be seen in italics in the following sentences:
He has a chainwhich is made of gold.
The train had left by the time they reached.
I belong to afamily which has fifteen members.
Ingrammar, aclauseis the smallest grammatical unit that can express a completeproposition.A typical clause consists of asubjectand apredicate,where the predicate is typically averb phrase averbtogether with anyobjectsand other modifiers. However the subject is sometimes not expressed; this is often the case innull-subject languagesif the subject is retrievable from context, but it also occurs in certain cases in other languages such asEnglish(as inimperativesentences andnon-finite clauses).