Do you have any __difficulty__ (困难) with your studies these days.
为什么用 difficulty 而不用 trouble
have any difficulty in doing sth.
have no difficulty in doing sth.
是英语中的固定搭配
difficulty是指做事情的难度,而 trouble 是偏重于……困难,例如生活困难、贫穷.
为什么 difficulty 不用复数 difficulties?
any 做“一些”解时,如果后面是可数名词,接其复数形式;做“任何”解时,则接单数名词.
在这里,any difficulty 是指“任何”难度.