she has been working in our company since 2012.6这句话有没有语法错误?

She has been working for 20 hours 哪个对have she been working fou 1hour?/has she been working fou 1hour做否定回答呢 对画线部分提问 she has been working for 2 hours for 2 hours 画线 She has been working for 20 huors.(改为一般疑问句） she has been working in our company since 2012.6这句话有没有语法错误? Where has she been? has been worked和has been working的区别 has been working on his degree是什么意思 He has been working here.为什么要用working? has been working 和was working有什么区别 She has been dancing for two years.对划线部分提问 ___ ____ has shen been dancing __________2,She has been working for 20 hours.改为一般疑问句2_____she _____ ____for 20 hours? My mother is an architect,she has been an architect for several years.When she is working,she usuaMy mother is an architect,she has been an architect for several years.When she is working,she usually draws plans of buildings.Although she is busy,she She has been hopeless是什么意思? she has been heard of 这两句话有什么区别.she has worked in London for six years .如果换成has been working 这两句话有什么区别? 翻译:She has never been there,has she? 过去完成时有什么法则吗?最近考试了,15分的题,我只得了9.（ ）this week?No.She's away on hoilday.She ( )Spain.A.Does she work/has been toB.Has Susan worked/has been toC.Has Susan worked/is gone toD.Is Susan working/has gone to She left school 3 years ago and has worked as a nurse ever since.和She left school 3 years ago and has been working as a nurse ever since.两种都可以的吧?翻译出来有什么不同?