Identify the main clause in the sentence below. Then decide if the subordinate clause is used as noun, adjective, or adverb.

Chris's chief interest was tennis, which he was just learning to play.

Main Clause: Chris's chief interest was tennis

Subordinate clause type: Adjective

Subordinate clause type: which he was just learning to play.

Right.

To identify the main clause in the sentence, we look for the independent clause, which is a clause that can stand alone as a complete sentence. In this case, the main clause is "Chris's chief interest was tennis".

Next, we need to determine the usage of the subordinate clause. A subordinate clause is a dependent clause that cannot stand alone as a complete sentence and functions as an adjective, adverb, or noun.

In this sentence, the subordinate clause is "which he was just learning to play." It provides additional information about the noun "tennis". Since it modifies or describes the noun, it is functioning as an adjective.