she is 3years old.中的old怎么解释?

she is 3years old.中的old怎么解释? She is eleven years old She is eight years old. She is a_______twelve years old She is ten years old.对ten years old 提问. She is 3years old,she can't She is fourteen years old 对它提问怎么提? She is thirteen years old now 中的old可省略吗 how old is your sister?she is 11 years old. She is 11 years old,Just as old as I. she is 3 years old变为一般疑问句 she is 40 years old about.