UC知道为什么不用复数
来源：百度知道 编辑：UC知道 时间：2024/06/03 04:29:32
Recently we asked for your opinions about paying
students to improve school attendance or performance
on tests. Some American schools are doing this.
请问performance 为什么不用复数performances?
越详细越好
应该既是可数也是不可数uncountable and countable，请问什么时候是可数，请举例
students to improve school attendance or performance
on tests. Some American schools are doing this.
请问performance 为什么不用复数performances?
越详细越好
应该既是可数也是不可数uncountable and countable，请问什么时候是可数，请举例
performance在上句中的意思为"表现"
performance作"表现","能力","性能"的意思时,是不可数名词,
当作"表演"的意思时,才是可数名词
Eg:The singer's performance was terrible.
There are two performances a day.
performance在上句中的意思为"表现"
performance作"表现","能力","性能"的意思时,是不可数名词,
当作"表演"的意思时,才是可数名词
因为在这里performance的意思是"表现”，这是一个抽象的概念，因此是不可数名词，所以用单数。
和attendance一样，不可数名词
是不可数名词啊，当表演和成绩讲
不可数名词