通常情况下是按照上课时的时间来跟同学们问好。比如说在上午上课老师就会说Good morning,everyone，这时候同学就应该回答Good morning，teacher。下午上课的话就是Good afternoon，everyone，Good afternoon，teacheer。课堂上老师常用的口语：Take notes, please.请做笔记Who’s next?接下来到谁了？Now you’re going to read one by one.现在请你们依次朗读。Class is over. Thank you, class.同学们下课了。谢谢!See you tomorrow.明天见
五堂宅修
