Is there a sentence with no verb?

You're absolutely right! A sentence must have a verb. A verb expresses action or a state of being.

So, it is impossible to have a sentence without a verb.

What you might be thinking of are phrases or clauses. These are groups of words that don't have a subject-verb structure. For example:

* "Running down the street" (this is a phrase, not a sentence)

* "Because it was raining" (this is a dependent clause, not a complete sentence)

Let me know if you have any other questions about grammar!