这句话为什么要用虚拟语气?In the absence of necessary knowledge,I think more people would be infected with HIV

这句话为什么要用虚拟语气?In the absence of necessary knowledge,I think more people would be infected with HIV 没从句的虚拟语气用法what if someone offered me a cigarette?中为什么要用offered而不用offer?这句话是虚拟语气吗? He read the letter carefully in order that he should not miss a word这句话是虚拟语气,他虚拟在哪里啊,那句话虚拟了, i (would rather )live alone.第一句是虚拟语气 will,这句为什么要用虚拟语气呀?有宁愿就要用虚拟语气了? 有个虚拟语气的句子有点疑问In the silence,you could have heard a pin drop.这句话我认为可以把它理解为,要是现在有跟针掉在地上,你就可以听得到..那不是应该是违背现在的虚拟吗,为什么要用could hav Time is treated as if it were always something real这句话中为什么要用虚拟语气 我知道这句话是虚拟语气,但为什么were后面用to built 呢 he acted as if he everything in the world .A)knew B )knows C )has known D )won't know 这句话不是虚拟语气吗?为什么不应该用had known 用wish的虚拟语气造句请帮我用wish的虚拟语气造10句话.please in English 这句话是不是要用虚拟语气?请问,“如果你会说中文就好了”这句话如何正确翻译?是不是翻译的时候要用虚拟语气? it's time什么时候接不定式?什么时候用虚拟语气?为什么要用虚拟语气啊？ This is the last thing I would ever to do.这是虚拟语气吗?为什么要用would. 请问这句话的语法分析,虚拟语气与倒装The Achievements of the greatest minds in science could never have been reached had it not been for the patient work for hundreds of others.1.请问句中为什么要用could?这是什么语法结 It is curious that he should have failed to win the race是虚拟语气吗?如果是虚拟语气,那为什么要用虚拟语气呢?他已经输了比赛难道不是现实吗? 什么是虚拟语气,怎么判断这句话是不是虚拟? for fear that引导的状语从句He wrote the name down for fear that he should forget it.这句话中从句为什么要用should do?是否是虚拟语气? 虚拟语气中为什么要用if I were you 虚拟语气 I后面为什么要用WERE?同上