→We would not have finished the work on time without your help.

　　③If there were no electricity，life would be quite different today.

　　→ Without electricity，life would be quite different today.

　　④If it had not been for the rain，we would have finished the work.

　　→ But for the rain，we would have finished the work.

　　三、虚拟语气在名词性从句中的应用

　　(一)虚拟语气在宾语从句中的应用

　　1．wish后的宾语从句

时间 谓语动词的虚拟形式 对现在的虚拟 一般过去时(be用were) 对将来的虚拟 would/could＋动词原形 对过去的虚拟 过去完成时 　　I wish(that) I were a bird and could fly freely in the sky.(现在)

　　我希望我是一只小鸟能在天空自由飞翔。

　　I wish I hadn't made such a mistake.(过去)

　　我希望我没有犯过这样的错误。

　　I wish I would live up to the expectations of my parents and teachers in the College Entrance Examinations.

　　我希望在高考中我不会辜负父母和老师的期望。

　　[即时训练3]　用所给动词的适当形式填空

　　①I wish I had slept (sleep)longer this morning，but I had to get up and come to class.

　　②I wish your company expanded (expand)the business.

　　2．在would rather后的宾语从句中，谓语常用一般过去时来表示对现在或将来的虚拟，用过去完成时表示对过去的虚拟。

　　I would rather I had attended the party yesterday.

　　我情愿我昨天去参加那个聚会了。

　　I would rather they left next week.

　　我宁愿他们下周离开。

[即时训练4]　用所给动词的适当形式填空