是one year and a half还是a year and a half?为什么?

是one year and a half还是a year and a half?为什么? half的用法是 one and a half years 还是one and a half year?half具体的用 one and a half 后加year 还是years A.one and a half year`sB.a year and a half`sC.one and a half 一年半用英语怎么说?是one and a half years还是one and a half year? one and a half years 谓语动词用单数还是复数?one year and a one () and a half one and a half () years or year? the baby is one and a half _____ (year)old They lived here about one year and a half改错 three years and half a year two years and a half 还是two year and a half 1年半 用英语怎么说a year and a half?a years and a half?one and a hal