he is an 8 years old boy 为什么不对

he is an 8 years old boy 为什么不对 this is an old man. he is 80 years old. 合成一句 He is twelve years old. Is he( ) 14 years old? this is an old man .he is 80 years old合成一句.this is —— ——man He is eleven years old,对eleven years old, he is ______boy A.an eight years old B .an eight-year-old两个好像都行啊,奥不懂啊 he is ____boy 1.a eight-year-old 2.an eight-year-old 3.an eight-years-old 4.a eight year old He is __,and he has__sister.A.ten years old,an eight-year-old B.ten-year-old,eight year old This is an 8-year-old boy.That girl is 7 years old . He is only four years old.是什么意思? he is only five years old . He is twelve years old 提问 He is forty years old.两种 Mary is( )girl.A.an 8 year old B.8 years old C.the 8 years old D.an 8-year-old选择 Lily is ____ girl.A.a 8-years-old B.an 8-year-old C.an 8-years-old D.a 8-year-old 翻译He is 20 years old / years of age. He is fourteen years old同义句He is () () boy