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
Eg:The singer's performance was terrible.
There are two performances a day.