M6 Grammar:虚拟语气(Subjunctive Mood)一、 ★ 在 If 非真实条件句中的运用 If 条件从句主句与过去事实相反 If 主 +had done/beenshould(would, might, could)+ have done/been 与现在事实相反 If 主 + did / wereshould(would, might, could)+动词原形(do/be done)与将来事实可能相反 1. If 主 +did / were2. If 主 +should + 动词原形 3. If 主 +were to + 动词原形 should(would, might, could)+动词原形(do/be done)1. If it_____________ (not rain), we ____________ (go) for a picnic如果现在不下雨的话,我们就出去野餐了。2. If he ____________ (come) here, he might be able to help you. 如果他来这,他就能帮你了。3. If she ____________(not call) me, I _______________(oversleep) this morning. 今天早上,她要是不叫我的话,我就会睡过头了。4. If it ________ (fail), I__________ (try) again.要是失败了,我会再试一次。特别注意点:(1) ★混合型的条件句当条件 状语 从句 与 主句 所表的时间不一致时,虚拟语气的 形式 应作相应的调整。主句和从句的谓语动词并不相互呼应,这种条件句叫混合条件句。较多见的混合型条件句是从句用过去完成时(指过去行为),而主句用现在 时 (指目前状态)。例:He would pass the test now if he had taken my advice.如果他听我的劝告,他会通过考试。1. If I ____________ (speak) to him yesterday, I ____________ (know) what to do now. 假如昨天我对他说了,现在我就知道该怎么办了。2. You ____________ (be) much better now if you ____________ (take) my advice. 假如你接受了我的意见,你现在就会好得多。(2). 如果虚拟条件句的谓语部分有 were , had 和 should 时,可省略 if,把 were , had 和 should 放到从句主语前面去。1. If you __________(not help) me, I should have failed.要是没有你的帮助,我就失败了。→______ you _______ _______ me, I should have failed.2. If you ________ (be) in my position, you would do the same. 假如你处在我的地位,你也会这样干的。→______ you in my position, you would do the same.3. If you should...