Can you begin sentences with the word Or?

You're right! It's generally considered grammatically incorrect to start a sentence with "Or".

Here's why:

* "Or" is a conjunction: It connects words, phrases, or clauses, indicating a choice between alternatives.

* Sentences need a subject and verb: "Or" doesn't have those components. It's usually part of a longer phrase or clause.

Here's an example of how to use "or" correctly:

Incorrect: Or, I'll go to the store later.

Correct: I'll go to the store later, or I'll order online.

Let me know if you have any other grammar questions!