为什么a few minutes ago的few前要加a?不要只说few,关键是a few minutes ago的few前为什么要加a

为什么a few minutes ago的few前要加a?不要只说few,关键是a few minutes ago的few前为什么要加a every few minutes为什么不是every a few minutes i _(陈述) my opinion a few minutes ago 为什么不是 even a few minutes later? The ferry left a few minrtes ago用a few minutes ago提问________ ________ the ferry ________? a few days ago为什么用a few A:Mary gave me a call a few minutes ago.(改为同义句） B:Mary ____ ____ me a few minutes ago. a few more minutes a few minutes a few minutes是什么意思 in a few minutes a few minutes ____there a telephone call___Dick a few minutes ago?A.Is;for B.Were;withC.Was;forD.Was;with选什么,为什么 ____ the instruction book for the main engine a few minutes ago.A.read B.readed C.reads D.is选哪个 为什么 A car accident happened a few minutes ago ________ .near nearby nearly nearest 选哪个 如果句中有含a few minutes ago 则用什么时态?过去式还是现在完成时? Where is Peter?I saw him ______ with some classmates a few minutes ago.(take) The bus left a few minutes ago.(改为同义句）急急急