one year 可以说成 a year

one year 可以说成 a year a four-year-old boy可以说成a four-year old boy 请问英文的Happy New Year.可以说成Happy a New year.有这种说法吗? more than a year.more than one year. Two year season we'll make a one year one year later 跟a year later有什么区别 a year /one year那个是标准的啊? a year or two 还是one year or two a three－year－old boy,可以说成a three years old contract:one year with a possibility to One （ ）year is a century a one-year program什么意思