就是ask 动词原形本身是复数意义 其单数加s 与名词相反

如take(v.)的单数为takes

动词 ask 加 s 仅用于第三人称，其他情况不加，即：I askHe asksShe asksWe askThey askI will ask等等.例句：She asks a good question and it deserves a good answer.We often ask mom for treats to bring to school.