题目

请帮我分析几个英语虚拟语气句子
1 if he ___ to the teacher attentively,he ___ the answer to the problem now ( had listened,would know) if引导得虚拟条件句,应是if 从句的谓语形式用过去完成时即had＋过去分词,主句用would / should / could / might + have +过去分词嘛
2 It ___ very nice if only it were possible （ would be）if only引导虚拟条件句,从句谓语什么时用过去式什么时用过去完成式,例外它前面怎么用would
3 Let’s say you could go there again,how ___ feel?(would you )它怎么虚拟句 有暗示嘛
4 I can’t stand him.He always talks as though he ___ everything（had known) as though 引导虚拟句根据主句时态,从句谓语时态相应退后一位,应用knew嘛
5 James wishes he ___ the football game instead of the film （had seen） wish引导虚拟句根据主句时态,从句谓语时态相应退后一位 ,应用saw
例外是不是

提问时间：2020-11-03

答案

1. 答案正确,楼主理解有误.
if引导的条件状语从句的虚拟语气存在着一种所谓的“混合”的说法,即从句和主句是针对发生在不同时间的动作分别进行各自虚拟.
此题从句就是针对过去动作的虚拟,所以用过去完成时即“had＋过去分词”,但是主句缺少对现在动作进行虚拟,所以用“would / should / could / might + 动词原形”即可.
2. if only引导虚拟条件句,如果针对过去虚拟,从句就用过去完成时；如果针对现在虚拟,则用一般过去时.而主句同样是对现在进行虚拟,所以也用“would / should / could / might + 动词原形”即可.
It would be very nice if only it were possible.
如果它(现在)是有可能的,(现在)那该有多好啊!
3. Let's say和you could go there都有虚拟的暗示.
“Let's say”直译为“让我们说”,其实就是“让我们假设”之意,所以后面用could而不用can,而最后面也用“would you feel”了.
最好的理解是,把Let's say换成if就可以了,即原句可以换写成：
If you could go there again, how would you feel?
4. as if/though引导的方式状语从句的虚拟语气,跟主句的时态并无关系,而是把主句动作和从句动作发生的时间进行对比.
1）从句动作发生在主句动作之前,则从句用过去完成时；
2）从句动作与主句动作同时发生,则从句用一般过去时或过去进行时；
3）从句动作发生在主句动作之后,则从句用过去将来时.
该题know everything是发生在talk之前,所以从句直接用过去完成时.
再如：He always talks as though I were his child.(同时发生)
He always talks as though he would never be able to talk in the future.（从句动作发生在主句动作之后）
5. wish引导的宾语从句的虚拟语气和主句时态也没有关系,而是直接看从句动作发生的时间,如果是过去发生,则用过去完成时；从句动作发生在现在,则用一般过去时；从句动作发生在将来,则用过去将来时.
从题意来看,应该是“他希望他早已经看过这场足球比赛而不是在电影里看过(?)”,所以是指“(过去的时候)早就看过”.从句动作发生在过去,所以从句时态用过去完成时.