should it prove necessary to send your payment by money order为什么should?
问题描述：
should it prove necessary to send your payment by money order为什么should?
should it prove necessary to send your payment by money order，please take your request tothe payments department,where you wikk find the appropriate forms.
答
这是虚拟语气的一种,跟未来事实相反的虚拟语气.所以用的是should.正常语序是If it should prove necessary...
但是这里should提前变成倒装了.这是一种惯用法,意思还是如果...
这句话就是如果到时候需要用汇票付款,那么带着要求涵到财务部,在那里你会找到合适的表格.