To attach the preparatory to the senior school these three classes were known officially, on speech days and in reports, as upper, middle, and lower second.
作为高中的预备班，在演讲日和报告中，这三个班被正式称为上、中、下二班。
2
These days, it is not unusual for 10-to 12-year-olds to publish their own websites or for second and third graders to begin computer classes.
如今，10到12岁的孩子发布自己的网站，二、三年级的学生开始上计算机课，已经不是什么新鲜事了。
3
On the first or second day of classes, I ask everyone to think up examples of the passive voice.