虚拟语气1.表示主观愿望、建议、假想、虚拟、委婉的请求和祝愿等
2.虚拟条件句:真实条件句和非真实条件句
1)如果假设的情况是可能发生或实现的,那就是真实条件句
Ifyouhavenoelectricity,thecomputerdoesn’twork
2)如果假设的情况或发生的可能性不大或几乎没有,就是非真实条件句,或虚拟条件句
Ifthehumanpopulationhadnotincreasedsorapidly,peoplewouldhavehadmorespaceandmorefreedom
附表:虚拟条件句的两个分句中动词的一般规则从句主句与现在事实相反did,werewould/should/could/might+v
与过去事实相反had+p
would/should/could/might+have+p
与将来事实相反should/wereto+v
would/should/could/might+v
Ifmydaughterhadtime,shewouldstudyFrenchandGermantoo
IfIhadknownthoseodds(概率、机遇)20yearsago,thingsmighthaveturnedoutdifferently
HowwouldKatefunctionifChrisweretodiefirst
IfIhadamilliondollars,Iwouldn’thavelivedanywhereelse
Ifhelivedalonglife,chancesaregoodthattheirchildrenwillalsolivealonglife
3)有些虚拟条件句不用if从句表现出来,而是通过介词、介词短语、动词不定式短语、抽象名词、动名词短语、形容词比较级、名词---分词组成的独立主格结构、并列句、定语从句、状语从