be present at和be present in都对吗?若都对请分别给出一个例句,并解释其区别
问题描述：
be present at和be present in都对吗?若都对请分别给出一个例句,并解释其区别
答
How many people were present at the meeting yesterday.
They is presentin the classroom.be present 出席的.到场的,存在的,in at 取决于其后的名词第二句应为they are吧Sorry笔误