Can stand alone as a sentence?

The phrase "stand alone as a sentence" is a bit of a paradox. It's describing something that can be a sentence, but it itself is not a complete sentence.

Here's why:

* A sentence needs a subject and a verb. "Stand alone" lacks a subject. We need to know *what* can stand alone as a sentence.

* It's grammatically incomplete. "Stand alone" needs more context.

To make it a sentence, you could add a subject and verb:

* Example: "That sentence can stand alone as a sentence."

Let me know if you have another phrase you want to check!