Can you use more than once in an single English sentence?

Yes, you can use "more than once" in a single English sentence. Here are some examples:

* I've told you this more than once, stop interrupting!

* She's made the same mistake more than once, so she needs to be more careful.

* He's visited this city more than once, and he always finds something new to discover.

"More than once" acts as an adverbial phrase, modifying the verb in the sentence and indicating that an action has occurred multiple times.