how long you have kept this book for for 要不要加的啊 请说详细理由就是对I have kept this book for two days.其中“two days"画线部分提问 如果加了for，在句子翻译中会不会扣分啊？不要为了“讨好我”^-^说

How long have you been how long have you been learning english? How long have you been studying? How long have you been in China? how long have you been dancing today? how long have you studied in this How long have you been there? How long have you live in China How long have you ----(live)here? “How long have you been watching how long have you done与how long have you been的区别 How long have you been skating?与How long did you skate?的区别 How Long have you felt thisHow Long have you felt this way?翻译成汉语 How long have you been here?为什么是How long have you been here,不是How long have you been standing here? How long have you been collecting shells?翻译 英语：how long have you been collecting shells?主要语法 翻 译 How long have you been like this? HOW long have you been studying english 怎么回答