In this lesson, I will introduce two sentence-ending particles called "ne" and "yo".

Sentence-ending particles are used to show or imply your feeling or mood.

あのひと　は　さとうさん　です　ね。

That is Mr. Sato, right?

*ね is used to seek the listener's confirmation or agreement to what you are saying.

メアリーさん　は　アメリカ人　です　よ。

Mary is an American. 

*よ indicates that you are confident of what you are saying and want a listener believe it.

In this case you are confident that Mary is an American.

Reference:

https://www.japaneseprofessor.com/lessons/beginning/the-sentence-ending-particles-ne-and-yo/

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