每周几次（once/twice/three …times a week）前面用什么介词 A about B for C

每周几次（once/twice/three …times a week）前面用什么介词 A about B for C once/twice/three times a once,twice,thrice a week 能不能变成one time,two times ,three time Twice times a week. i read english books( about )three times a week 用about,那用for i read english stories [ ] twice a week A.about B.at c.for D a.i guess i eat two or three times a week b.maybe twice a we I eat fish twice or three times a week.对twice or three times two or three times a week 和 twice or three times a week哪个对? 用 twice orthree times a week. 提问 对 once a week never for an hour three times ever a week前面用什么介词