Here's what makes it special:
* It's set off by commas. This helps to distinguish it from the rest of the sentence.
* It modifies a noun or pronoun. It provides additional information about the subject or object of the sentence.
* It's non-essential. The sentence would still make sense without it.
Examples:
* The cat, which was sleeping on the couch, woke up suddenly.
* My friend, a talented musician, plays the guitar.
* The book, that I borrowed from the library, was due yesterday.
Key Features:
* Usually starts with a relative pronoun: "who," "whom," "whose," "which," "that," "what," or "where."
* Can also be introduced by: "when," "where," "why," "how," etc.
* Often contains a verb: providing information about the subject.
Why are they important?
Interrupting clauses add depth and detail to sentences. They help to provide more context and information about the subject or object. They can also be used to create a more conversational and engaging tone.
Let me know if you'd like more examples or want to learn more about how to use them effectively in your writing!