Did you see my grandmother?I saw ___ old woman sitting on a chair by the lake.Maybe she is.填啥冠
问题描述：
Did you see my grandmother?I saw ___ old woman sitting on a chair by the lake.Maybe she is.填啥冠
答
an填the 可以吗？后面不是有定语修饰吗不可以，the一般是指双方都知道的人或事，也就是对方也可以明白的。而这里对方并不知道那边坐着一个人，说话者是为了告诉他“存在”这样一个事实，因此只能用不定冠词。就如同There is an apple on the table一样的道理。