You are not entitled to unemployment benefit if you have nev

来源：学生作业帮编辑：搜狗做题网作业帮分类：英语作业时间：2024/06/17 22:56:37

You are not entitled to unemployment benefit if you have never worked.
if在句子的作用,翻译成什么?怎么判断是不是虚拟语气?
如果不是虚拟语气，主从句的时态怎么确定？

这是个条件状语从句,不是虚拟语气.
翻译：如果你从来没有工作过,就没有资格享受失业福利.
暗指工作过是取得失业福利的前提条件.
虚拟语气一般用在不可能发生或者说与事实相反的事情上.if用在虚拟语气中的时候,一般你会再主句看到should,would,could或might这些标志性的虚拟语气情态动词.
比如:I could have done the homework on time if I had not gone to the party.如果我没有去聚会,我的作业就已经按时完成了.暗示我已经去了聚会,作业也没有按时完成.
if用在虚拟语气中的时候,主句会陈述一个与现在、过去或者将来相反的事实,而if引导的从句的时态比主句要早发生,因为if陈述的是主句发生的前提,这个前提也是和事实相反的并不会发生的.即如果主句是现在时,if从句就是过去时；主句是过去时,if从句就是过去完成时；主句是将来时,if从句就是现在时或者过去时.

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