clause (hidden)

A clause is a sentence that does not make complete sense by itself.It depends on another sentence  for its full meaning. It is subordinate adjective clause.

 A clause is a group of words composed of a subject and a verb.

A clause can be: i) an independent clause that makes sense on its own, and consists of a subject and a predicate. For example, "Sidharth is a good boy."  This sentence (in Simple Present tense, which is also a Declarative type of sentence) is an independent clause - it has a subject ("Sidharth") and a predicate (i.e., "is a good boy.") which contains the verb ("is") and some additional information about the subjet.)  

The subject of a clause is  the noun - person, place, object, or concept, which performs the action, is acted upon, or (as in this case) is decribed. The subject usually answers the question Who/What is the sentence about?  This sentence is about "Sidharth" - so, Sidharth is the subject. He is being described, so "is a good boy" is the predicate. And, the whole sentence is an independent clause.

ii) Dependent clauses contain a subject and a verb, but do not make sense on their own. They contain subordinate conjunctions (after, before, once, since, until)  or relative pronouns (who, that, which, whichever, whoever).

When dependent clauses contain subordinate conjunctions, they are called a) Subordinate Clauses. b) When they contain Relative pronouns, they are called Relative Clauses.

Subordinate Clause: Sidharth was a good boy (independent clause), even before he became president of his class (dependent subordinate clause). 

Relative Clause: Sidharth, who is president of his class, is a very good boy. (dependent relative clause -  "who is president....") 

The clouds, which covered the sky, began to pour rain - contains an independent clause ("The clouds began to pour rain) and a dependent relative clause ("which covered the sky").

Best wishes,

Shaila.