【正文】 A. were B. would be C. have been D. had been 15. Had it not been for the policeman，we ________ our lives A. would have lost B. should lose C. might lose D. had lost 1. It ordered that the army (should) get there by 4 .2. It is necessary that she (should) be sent there at once.order,suggestion,idea,plan, proposal, advice, demand等名詞后的表語從句或同位語從句從句謂語用“should+動詞原形”，should可省。 you had worked hard yesterday, you would be tired now2. If we hadn’t been working hard in the past few years, things woud be going so smoothly.含蓄條件句（虛擬條件暗含在短語或上下文之中，從句不表現(xiàn)出來）(常見有but for“要不是” without等)根據(jù)句子表達的實際情況選用相應的虛擬條件句中的主句的動詞形式 air, there would be no living things. would have given you more help, but I was busy now.名詞性從句中的虛擬語氣wish, “可惜……”“……就好了”，“悔不該……”“但愿……”wish后從句：與表各種時間的虛擬條件句中的從句動詞形式基本相同。It is high time you should go to work. 你早該上班了。如：I’m very sorry that you should have failed the exam. 我很遺憾，你這次考試竟然失敗了。其虛擬語氣的結構為：① should + 原形動詞(指現(xiàn)在或?qū)?。虛擬語氣的結構為：表示所發(fā)生的時間虛擬語氣結構發(fā)生在主句動作之前had + 過去分詞與主句動作同時發(fā)生過去時(be 用were )發(fā)生在主句動作之后would / could / might / should+原形動詞例如：They began to talk warmly as if they had known each other for long. 他們開始熱烈的談論起來就好像他們已相互認識很久了。 (2) 在though, although等引導的讓步狀語從句中，從句虛擬語氣結構為 should +動詞原形，主句結構不限。He started out earlier lest he should be late. 他很早就出發(fā)了以防遲到。②省略主句If I were at home now. 要是我現(xiàn)在在家里該多好啊。Without your instruction, I would not have made such great progress. 要是沒有你的指導，我不會取得如此大的進步。Had he learnt about puters, we would have hired him to work here. 如果她懂一些電腦知識的話，我們會已經(jīng)聘用他來這里工作了。If he knew her, he would have greeted her. 要是他認識她的話，他肯定會去問候她了。①從句的動作與過去事實相反，而主句的動作與現(xiàn)在或現(xiàn)在正在發(fā)生的事實不符。但在倒裝虛擬結構及if I were you, as it were中，只能用were。(3) 過去時的條件句中的虛擬語氣。If he were to e here, he would tell us about it. 如果他要來的話，他會通知我們一聲。如：1. He ordered that the books be sent at once.= He ordered that the books should be sent at once.= He ordered the books to be sent at once.2. It is important that she be placed in an appropriate job.= It is important that she should be placed in an appropriate job.= It is important for her to be placed in an appropriate job.三、 非真實條件句中的虛擬語氣1. 條件句中虛擬語氣的動詞形式從句中提出一種與客觀現(xiàn)實不相符或根本不可能存在的條件，主句會產(chǎn)生的一種不可能獲得的結果。He told us his idea that he should go to university. 他告訴了我們他的想法：他想上大學。It worries me that we should be blamed for that. 我們竟要受責備真讓人煩惱。（二）主語從句中的虛擬語氣在表達驚異、惋惜、遺憾、理應如此等意義的主語從句中常使用虛擬語氣，其虛擬語其的結構為： should + 動詞原形，主句中的謂語動詞形式不限。4. 英語中，would rather, had rather, would sooner等之后的賓語從句常表示與客觀事實不相符的一種愿望，故使用虛擬語氣。如：Can you believe that he should kill a tiger? 你能相信他竟殺死了一只老虎？Can you imagine that he should take the first place in the long jump contest? 你能想象得到他在跳遠比賽中竟獲得了第一名？3. 英語中，wish之后的賓語從句，表示一種沒有實現(xiàn)或根本不可能實現(xiàn)的愿望，常用虛擬語氣。His smile suggested that he had succeeded in this exam. 他的微笑表明他在考試中成功了。如：The teacher advised that we should make good use of every minute here. 老師勸我們要好好地利用在這兒的每一分鐘。其虛擬語氣的結構為：“情態(tài)動詞 + have + 過去分詞”。如：You’d better ask your father first. 你最好先問一問你的父親。如：Would you like to have a talk with us this evening? 今天晚上來跟我們聊天好嗎？Could I use your bike now? 我可以用一下你的單車嗎？(2) 陳述自己的觀點或看法。如：Long live the Communist Party of China. 中國萬歲。2. 表示“祝愿”時，常用“may + 主語 + 動詞原形 + 其他”。（一般表示與現(xiàn)在的事實相反）過去時情態(tài)助動詞（過去完成時表示與過去的事實相反）重點：名詞性從句和狀語從句中的虛擬語氣難點：非真實條件句中的虛擬語氣內(nèi)容：一、簡單句中的虛擬語氣1. 說話時，為了表示客氣、謙虛、委婉而有禮貌，言語常使用虛擬語氣。這也就是說，語氣形式對任何一個謂語動詞來說都是不可缺少的。說話者的意圖或態(tài)度可