省略if的虚拟条件句中，were,had,should与主语倒装。WereIyou,Iwoulddothework.WereI(=IfIwere)inyourplace,Iwouldn’tgiveitupsoearly.HadI(=IfIhad)known,Imighthavejoinedyouinthediscussion.Shouldyou(=Ifyoushould)beinterested,Ihaveabookonthesubjectyoumightliketosee.当虚拟条件句的谓语动词含有were,should,had时，if可以省略，这时条件从句要用倒装语序，即将were,should,had等词置于句首，这种多用于书面语。如：Shouldheagreetogothere,wewouldsendhimthere.要是他答应去的话，我们就派他去。Wereshehere,shewouldagreewithus.如果她在这儿的话，她会同意我们的。Hadhelearntaboutcomputers,wewouldhavehiredhimtoworkhere.如果她懂一些电脑知识的话，我们已经聘用他来这里工作了
