The eleven years old boy crosses the river to school every day.The eleven-year-old boy crosses river to school every day.两个都可以 eleven years old网络释义eleven years old:十一岁eleven-year-old boy基本翻译十一岁的男孩。 cross the river基本翻译渡河网络释义cross the river:过江 | 过河 | 渡河标准回答,希望采纳