performance 既可做可数名词 又可做不可数名词 。只是不同的含义 有不同的用法。例如翻译为演出、成果时可数，翻译为技能、性能时不可数演出是可数，业绩是不可数名词 柯林斯英汉双解大辞典 performance /pəˈfɔːməns/  1. 可数名词 A performance involves entertaining an audience by doing something such as singing, dancing, or acting. 表演 例： Inside the theatre, they were giving a performance of Bizet's Carmen. 他们正在剧院里演出比才的《卡门》。 例： ...her performance as the betrayed Medea. …她出演被出卖的美狄亚。 2. 有变体名词 Someone's or something'sperformance is how successful they are or how well they do something. 业绩; 性能 例： That study looked at the performance of 18 surgeons. 那项研究着眼于18位外科医生的业绩。 例： The poor performance has been blamed on the recession and cheaper sports car imports. 业绩惨淡归咎于经济衰退和更便宜跑车的进口。performance 既可做可数名词 又可做不可数名词 。只是不同的含义 有不同的用法。例如翻译为演出、成果时可数，翻译为技能、性能时不可数演出是可数，业绩是不可数名词 柯林斯英汉双解大辞典 performance /pəˈfɔːməns/  1. 可数名词 A performance involves entertaining an audience by doing something such as singing, dancing, or acting. 表演 例： Inside the theatre, they were giving a performance of Bizet's Carmen. 他们正在剧院里演出比才的《卡门》。 例： ...her performance as the betrayed Medea. …她出演被出卖的美狄亚。 2. 有变体名词 Someone's or something'sperformance is how successful they are or how well they do something. 业绩; 性能 例： That study looked at the performance of 18 surgeons. 那项研究着眼于18位外科医生的业绩。 例： The poor performance has been blamed on the recession and cheaper sports car imports. 业绩惨淡归咎于经济衰退和更便宜跑车的进口。