could /kud, kəd/ aux. v.能,能够 1.(表示过去的能力) No one could do it last year.去年谁也干不了这件事。2.(表示更为婉转的语气)Could you wait a few days for the money? 这笔钱你能等几天吗? 3.(用于虚拟语气,表示与事实相反的事)If I could have gone with you, I should have felt very glad. 当时假使我能同你们一起去,我会感到多么高兴呀。4.可以,可能(委婉,不确定)It could happen. 这有可能发生。