1(2)2指说话人对某种事实的相反的假设和主观愿望，而这种愿望一般难以实现，或不可能实现。虚拟语气的假设意义31. 虚拟语气在非真实条件从句中：条件从句从句的谓语动词形式主句的谓语动词形式表示现在情况If+ 主语＋动词过去式should/would/could/might+ 动词原形表示过去情况If+ 主语 +had+ 过去分词should/would/could/might + have+ 过去分词表示将来情况If+ 主语 +should+ 动词原形If + were to+ 动词原形 If+ 动词过去式should/would/could/might+ 动词原形4① 与现在事实相反： If I had time, I would come.如果我有时间，我将来。② 与过去事实相反：If you had helped me, I would not have failed.如果你帮了我，我就不会失败了。5③ 与将来事实相反：If it should/were to rain, we would put off the meeting.要是天下雨，我们会推迟会议。注意：以上非真实条件从句中的倒装情况：当从句的谓语中含有should ， were ， had 时，可将 if 省略，将 should ， were ， had 提到句首。但否定式不可用缩略式。6Hadn’t it been for the captain, the ship would have sunk. ( 错误 )Had it not been for the captain, the ship would have sunk. （正确）要不是船长，船早就沉了。7Should he come, I would not leave.如果他来，我将不会离开。Were the teacher to come, I would ask him for help.如果老师来，我将请求他帮忙。82. 混合虚拟形式：当从句跟主句的动作的时间不一致，这时主句和从句的谓语动词形式需要根据意思来确定。①If you had followed his advice, you wouldn’t be in such trouble now. （从句说明过去，主句 now 说明现在）你当初如果听从他的建议，现在就不会陷入这种困境了。9②If I were you, I wouldn’t have done the foolish thing. ( 从句指现在，主句指过去 )如果我是你，我就不会做这种傻事情。103. 含蓄虚拟条件句：由介词 ( 短语 ) but for/without （要不是） , with （有） , 连词 or, otherwise 或but 以及suppose ， supposing ， providing 等词表示 if ，引出虚拟句。11But for/Without you, I could not be recovered so soon.=If it had not been for you, I couldn’t … 要不是你，我不可能康复这么快。W...
