请问做某事有困难的短语是:have some difficulty in doing sth.中的difficulty能不能用difficulties

问题描述:

请问做某事有困难的短语是:have some difficulty in doing sth.中的difficulty能不能用difficulties

不能,这里的difficulty是“困难,艰难”的意思,是不可数名词,所以不能加s.