Phoebe:And-and a power tie?

Phoebe:And-and a power tie? wear a shirt and tie,这里为什么不用a tie? power and wear a collar and tie / wear a suit and tie 穿着衬衫打着领带 为什么 tie if I were you,I'd wear a shirt and tie 中“tie”为什么不是复数 Today is a blue shirt and red tie day they usually wear a collar and tie going to work He always wear a collar and tie for work he is in a suit and tie now.这句话里的 a 能不能没有?in suit and in tie 英语翻译stick to a formal suit and tie for men,and a smart dress power and associates If I were you,I’d wear a shirt and tie.这里的tie是动词还是名词?为什么?