Here's a breakdown:
* Clause: A group of words containing a subject and a verb.
* Adjective: A word that describes a noun.
* Adjective Clause: A clause that acts like an adjective, modifying a noun or pronoun.
Example:
* The book that I borrowed from the library is very interesting.
In this sentence:
* "The book" is the noun.
* "that I borrowed from the library" is the adjective clause. It modifies the noun "book" by telling us which specific book is being referred to.
Key features of an adjective clause:
* It always includes a subject and a verb.
* It begins with a relative pronoun (who, whom, whose, which, that) or a relative adverb (where, when, why).
* It provides additional information about the noun it modifies.
Other examples:
* The woman who lives next door is a doctor. ("who lives next door" modifies "woman")
* The car that I bought is red. ("that I bought" modifies "car")
* The restaurant where we ate last night was delicious. ("where we ate last night" modifies "restaurant")