对不起,我迟到了,请问我可以进来吗? ：
Im sorry that Im late, may I come in?
人数全齐 （每个人都到了）：
All attended. (Everyone is here)
全班除了李明,都到齐了：
Everybody is here but Liming
Liming is absent.
有急事要离开 (一会)：
sorry I‘ve got something urgent, I have to leave (for a while)
读课文时不会：
sorry, I dont really know how to pronounce/read this word/sentence.
等等 ： . and so on.
如果上课打了个有声音的喷嚏
要说 Excuse me
如果别的同学打喷嚏然后说了 Excuse me
你要回答他/她 Bless you
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希望能帮到你,不懂的再来问我! ^ _ ^