英语：how long have you been collecting shells?主要语法

How long have you been 英语：how long have you been collecting shells?主要语法 how long have you been here 和 how long have you stayed here 的区别请问英语高手们,how long have you been here 和 how long have you stayed here 有什么区别? 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 英语-请问这两句话表达的意思有啥区别吗?How long have you worked there?How long have you working there? 这几个英语句子有什么区别How long do you learn EnglishHow long have you been learning EnglishHow long are you learning English还有 How long have you learned English?不用进行时态可以么 有什么区别 how long have you done与how long have you been的区别 人教版,八年级英语下册第六单元How long have you been collecting shells课文内容! 改错题：Li Hong,how long have you become a babysitter?英语大神进 要速度 英语问答 How long were you away?