1岁时,是 one years old 还是 one year old?

1岁时,是 one years old 还是 one year old? 一岁是one year old还是one years old? 急! 请问,“一岁”翻译成英语是"one year old"还是"one years old"? he is one ---- old .横线上填year还是years 请问,我一岁了,用英语怎么说:one year old ,还是one years old old one years Saran is 12 years(old,older).She is one year 是FIVE YEAR OLD还是FIVE YEARS OLD year olds还是years old? “-year-old” “years old” 英语口语中,“我21岁”是I am twenty first years old,还是twenty one years one－year-old前面用an还是a