He is a sixteen-years-old boy这句对么

He is a sixteen-year-old boy.同义句,He is a boy ( ) ( ）.The boy is （　）（　　）（　）． He is a sixteen-years-old boy这句对么 初三英语变成形容词时要不要加s例1Sixteen-year-olds shouldn't be allowed to work at night.例2He is a six-year-old boy.到底什么时候要加啊? I think ( ) should not be allowed to drive.A sixteen years old B sixteen-year-old C sixteen-year-olds sixteen year olds 还是sixteen year old? Sixteen-year-olds___to drive .A is allowed B are not allowed .Cis not allowed.选哪个? 为什么? 这几种年龄的英语表述方法是否正确Most of them were only sixteen.They were mostly sixteen-year-olds.sixteen-year-old是形容词吧?为什么加sThe boy the police arrested was only nine!He was only a nine-year-old.形容词?They are al 单选I think___shouldnot be allowed to drive.A.sixteen-year-old B.sixteen-year-olds 选什么 单选I think___shouldnot be allowed to drive.A.sixteen-year-old B.sixteen-year-olds 为什么选B, _ should be allowed to do some sports after school in the afternoon.A.Sixteen-years-oldB.Sixteen-year-oldsC.Sixteen-year-old ▁▁▁shouldn’t be allowed to go swimming in the river alone.A.Sixteen-year-oldB.Sixteen-years-oldC.Sixteen-year-olds 改错,下列句子中有一处错误,在下面划线并改正1、I was born on 19952、March is the three month of the year.3、He birthday is October4、What is your birthday5、I'm sixteen year He is a ____ .He joined the army last year. sixteen -year -olds和sixteen -year -old有什么区别 I think _B__should not be allowed to drive A sixteen years old B sixteen-year-olds 为啥选B? allowed to ..A:I think sixteen-year-olds______________________________.B:I agree.It is not good for health.用be allowed to ... sixteen year old、sixteen-year-olds、sixteen-year-old有什么区别 He is () one-year-old boy.A anB aC the