请问为什么有so a long time而没有such a long time?

请问为什么有so a long time而没有such a long time? so long a time为什么加a, so long 和for a long time 有什么区别 such a long time的意思 such a long time的解释 With such a long time,I think such a person? 1.Are you _____of doing such a thing for so long a time? a long time 区别 long time long time和a long time区别? A long time 请求, A long time ago a long lonely time