1、上课,开始上课:ClassBegins英[klɑːsbɪˈɡɪnz] 美[klæsbɪˈɡɪnz] 例句:The school made it a rule that the students should stand up when class begins. 学校定了一条规则,开始上课时学生要起立。2、下课了,下课:Classover英[klɑːsˈəʊvə(r)] 美[klæsˈoʊvər] 例句:The class over, we all went out to play. 课程结束了,我们都出去玩了。扩展资料:课堂用语:1、起立,站起来:standup英[ˈstændʌp] 美[ˈstændʌp] 例句:I tried to stand up, but I was completely exhausted. 我企图站起来,可是已经筋疲力尽了。2、坐下,就坐:sitdown英[ˈsɪtdaʊn] 美[ˈsɪtdaʊn] 例句:My leg still aches when I sit down 坐下时我的腿还会痛。