Anthropologists have discovered that fear, happiness, sadness, and surprise are universally reflected in facial expressions. 请问老师这句末尾"面部表情"为什么要用复数?可以写成“in the facial expression." 或”in a facial expression."吗?
Do you notice that music being played at any of those places?我想请问一下,music和play不是属于动宾关系吗?为什么这里用ing呢?是否可以改成Do you notice that music is being played at any of those places?