例句：

　　早上好同學(xué)們準(zhǔn)備好了么？

　　Good morning, class. Are you ready?

　　好主意！ 同學(xué)們，早上好！

　　Good idea. Good morning, class.

　　老師們，同學(xué)們，早上好！

　　Good morning, teachers and classmates.