how long have you done that

how long have you done that how long have you done与how long have you been的区别 how long have you been doing that job? How long have you had that bike over there?over How long have you ___Tom? how long have you()shanghai "How long have you been How long have you lived how could you have done that 谁能分析一下这句话语法? How long( )you( )(play) on that computer? how long have you had to wait How long have you been skating?