Do you have much trouble finifhing the work?为什么trouble前要用muc

用much是句意的需要,have much trouble doing sth.做某事遇到了许多困难.
trouble是不可数名词,可同some,any ,much ,a lot of 连用 .
你实在要用some或any,也可以呀,只是句意有所不同,而且,some用于肯定句中,any用于否定句中.
Do you have much/a lot of trouble finishing the work?
你完成这项工作有很大的困难吗?(强调:困难大不大?)
Do you have any trouble finishing the work?
你完成这项工作有困难吗?(强调:有没有困难?)
I have some trouble finishing the work.
我在完成这项工作时遇到了一些困难.(强调:有一些困难)