不是情态动词，asked是动词ask的过去式，例如：

1、She asked me if I would give her English lessons.她问我愿不愿意给她上英语课。

2、He asked several questions concerning the future of the company.他问了几个有关公司前途的问题。

3、She asked her students to get into groups of four.她让学生每四人分为一小组。