老师好用英文怎么表达？

Mina waved to Nate, who waved back, and called hello to her teacher.

米娜向内特挥手，内特也向她招手，并和她的老师打招呼。

Shall we say "Hello" to our new English teacher?

我们去问候我们的新英语老师好吗？

Hello! I'm your new music teacher.

你好！我是你们的新音乐老师。