in a huryy,walked a long time 为什么要加a呀

in a huryy,walked a long time 为什么要加a呀 so long a time为什么加a, He walked a long time 对 还是he walked long time! For a long time they walked without saying___word.Jim was___ We walked for a long time at last night改错 For a long time,they walked without saying_____word.John was 英语翻译1.we walked for a long time let's___a rest.A.stop having 几道简单的英语选择For a long time they walked without saying a word . we have been best friends for a long time中friends为什么要加s wait for a long time 要不要加for 呢? 为什么啊 For a long time in a short time 求翻译 “一段时间”应该说“a few time”还是“a long time”?为什么?