GRE 英语难句,会的来
问题描述：
GRE 英语难句,会的来
Should one of a pair die,the remaining fish cannot swim off in search of a male,nor is one likely to arrive.
should 在这里的用法是什么?
答
the use of "should" at the start of a sentence is a special way to say "if" in a conditional sentence.
should并非虚拟语气,是某些文辞中的引导条件从句,相当于“如果”.