下述句子（见补充说明）中的should是什么用法?难道should也可以表“可能”之意吗?Inthecaseoffineart,paintings,orjewelry,colorphotographscansometimesbeofassistancetothepoliceshouldyoubeunfortunateenoughto
下述句子（见补充说明）中的should是什么用法?难道should也可以表“可能”之意吗?
Inthecaseoffineart,paintings,orjewelry,colorphotographscansometimesbeofassistancetothepoliceshouldyoubeunfortunateenoughtohavethemstolen.
1.此句中的should表示条件,翻译为“万一”.
2.句中采用了if引导的条件状语从句的虚拟语气的倒装语法.
即：shouldyoubeunfortunateenoughtohavethemstolen
=ifyoushouldbeunfortunateenoughtohavethemstolen
3.相关语法规定如下：
1）if引导的条件状语从句,如果使用虚拟语气对将来的倒装进行虚拟时,则if从句可以使用“should+动词原形”或“weretodosth”或“动词过去式”来做谓语,主句则使用“would/could/might+动词原形”做谓语结构.
如：Ifitshouldraintomorrow,Iwouldstayathome.
=Ifitweretoraintomorrow,Iwouldstayathome.
=Ifitrainedtomorrow,Iwouldstayathome.
2)而且,如果if引导的使用了虚拟语气的条件状语从句,且其含有should/had/were时,则可以把这三个词中任意一个提前至从句句首,并省略if.
如：Ifitshouldraintomorrow,Iwouldstayathome.
=Ifitweretoraintomorrow,Iwouldstayathome.
=Shoulditraintomorrow,Iwouldstayathome.
=Wereittoraintomorrow,Iwouldstayathome.