* The Old Norse language: This is a language spoken in Scandinavia from roughly 800 to 1350. To write sentences in Old Norse, you'd need to learn the language.
* The Norse mythology: This is a collection of stories and beliefs from the Germanic peoples of Scandinavia. You can use these myths as inspiration for sentences, but you won't be writing "Norse" in the language sense.
* People of Norse descent: You could use "Norse" to describe people from Scandinavia or those with Scandinavian ancestry. However, you wouldn't write sentences *in* Norse, but rather *about* Norse people.
Examples:
* Old Norse: "Hann er sterkur maður." (He is a strong man.)
* Norse mythology: "Thor was known for his hammer, Mjolnir."
* People of Norse descent: "Many people of Norse descent live in Iceland."
To help me answer your question more accurately, please tell me:
* What kind of sentences do you want to write? (about Norse mythology, about people of Norse descent, etc.)
* What is the purpose of the sentence? (to tell a story, to give information, etc.)
* Do you want to use Old Norse language or modern English?
Once I have more information, I can help you craft a sentence that meets your needs.