第1个回答 2009-10-25
Boys and Girls 同学们
Good morning/afternoon, professor.老师好
Please set down.请坐
See you.老师再见
第2个回答 2009-10-25
hello,teachers and students 同学们老师好
sit down please请坐
good bye teachers老师再见
楼上的比较高级,不符合你的身份哦
第3个回答 2009-10-25
同学们 students/boys and girls
老师好 good morning teacher/good afternoon teacher
请坐 sit down please
老师再见 goodbye teacher
第4个回答 2009-10-26
同学们: everyone/guys
老师好: morning sir/miss
请坐:sit down please/get your seat
老师再见: see you/bye sir/miss