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1、虚拟语气与习题1. 动词wish后宾语从句中的虚拟语气1) 用wish表示现在的祝愿和抱歉。其句子结构为：宾语从句的谓语be用were(was),实义动词用过去式。例：I wish theywereat home this time.2) 用wish表示对过去事情的遗憾。其句子结构为：宾语从句的谓语用过去完成时，或could+现在完成时。例: I wish I hadn t hurt him so much。3) 用wish表示对将来事情的愿望。其句子结构为宾语从句的结构，谓语为would/could/might+ 动词原形。例：I wish I migh t be able to come
2、to morrow。2. 用在一般虚拟条件句中的虚拟语气1) 表示与现在、过去、将来事实相反的假设 与现在事实相反的假设。其句子结构为：从句：if+主语+动词的过去式(be变were)+其他主句：主语+would(should, could, migh t)+动词原形+其他例：If I were you, I would go with him. 与过去事实相反的假设。其句子结构为：从句：If+主语+过去完成时+其他主句：主语+should(would, could, migh t)+现在完成时+其他。例: If you had studied harder last term, you co
3、uld have passed the exam. 表示对将来事实实现的可能性不大的假设。其句子结构为：从句：If+主语+should (were to )+动词原形+其他 主句：主语+would (could, should, migh t)+动词原形 例：If he were to go tomorrow, he might tell you.2. ) 从句和主句要根据各自发所生的时间选用符合具体时间的虚拟语气形式 从句表示过去，主句表示现在。If they had started the early morning yesterday, they would be here now. 从
4、句表示将来，主句表示过去。If I were not to make a preparation for my experiment this afternoon, I would have gone to see the film with you last night。 从句表示过去，主句表示将来。If we hadn t made adequate preparations, we shouldn t dare to do the experiment next week。 从句表示将来，主句表示现在。If we shouldnt have an exam this afternoon,
5、 I would go shopping now.3. 可以引起与事实相反的方式状语从句，用虚拟语气;由as if、as though引起的与事实相反的句 子，不论主句的谓语是现在时或者说过去时，其谓语表示的时间概念和句子结构，都基本上与wish 后的宾语从句相同。例：John pretends as if he didn t know the thing at all, but in fact he knows it very well. (用 过去式表示与现在事实相反的假设)The old man looked at the picture, he felt as though he ha
6、d gone back to time 20 years ago. (用过去完成式表示与过去相反的事实)They t alked and t alked as if t hey would never mee t again (would+动词原形，表示与将来事 实相反)4. 在表示建议、命令、要求、忠告等动词的后面，其宾语从句的谓语用“should+动词原形”表示 虚拟语气常用的此类动词有：表示“要求”的：ask, desire, request, demand, require, beg 表示“提议、劝告、建议”的： move, propose, suggest, recommend, a
7、dvise, vote 表示“决定、命令”的：decide, order表示“主张”的：main tain, urge表示“同意、坚持”的：consent, insist例: The doctor suggested that he (should) try to lose his weight.He insisted that we (should) tell him the news.上述动词的名词形式， demand, desire, requirement, advice, order, decision, recommendation, suggestion, 以及 necessit
8、y, preference, plan, motion, idea等名词，其后的表语从句或同位 语从句，也用“should+动词原形”表示虚拟语气。现代英语，特别是美国英语，常省去“ should”， 例：The advice is that we (should) leave at once.The idea that we (should)visit Great Wall was warmly welcomed.5. 在“It is (was)+形容词(或过去分词)+that”结构中，主语从句的谓语也用“should+原形动词“表虚拟语气美国英语中省去should,常用的形容词和过去分词有
9、：表示“要求”的：required, demanded, requested, desired。表示“建议”的：suggested, recommended,表示“迫切、紧近、重要”的：imperative, urgent, necessary, essential, important, vital表示 “适当、较好”的：appropriate, advisable, better, preferable表示“可能”的：probable, possible表示“命令”的：ordered例: It was necessary that we (should) make everything r
10、eady ahead of time.It is required that nobody (should)smoke here.6. 由下列名词或短语引导，或含有某些词的从句中应用的虚拟语气1) Test以免、惟恐”引导的从句用“should+动词原形”。He took a map with him lest he (should ) lose his wag there.2) “whether不管、无论”引导的让步状语从句，有时用动词原形。All things, whether you know or don t know, exist in the world.3) 用“ would r
11、at her/had rat her would just as soon表 示“宁愿、但愿”，后面的宾语从句谓 语用过去式或动词原形表示对将来的要求，用过去时表示对现在的愿望，用过去完成时表示对过去 做的事的懊悔。Don t live in the world, I would rather( I would just as soon) you die.I would rather you go tomorrow.I would rather everything hadn t happened in the past.4) 用“had hoped”表示原来希望做到而实际上未能实现的事情，其
12、宾语从句的谓语用“would+动 词原形”。I had hoped that she would go to the U.S. and study there, but she said she liked to stay in China.5) 在“It is(high/about)time+that”引导的定语从句中，定语从句的主谓语用一般过去时，偶 尔也可以用would(或should)+动词原形，或had rather (would rather)+动词原形。It is high （about）time that we left/should leave/ had better lea
13、ve/had rather leave/ were leaving.（注意与“This is the first/secondtime”后从句中用现在完成时的区别。6）用 “without/butfor/in the absence of ”表示“要不是”，“如果没有（相当于 if it were not for）表示条件时，句中一般用虚拟语气。（也可用陈述语气）Without your help, I couldn t finish my work on time.In the absence of water and air, nothing could live7）由“providing
14、 （that）/ provided （that）/on condition that/ in order that” 引导的条件从 句或目的从句，根据情况，可用虚拟语气。（有时也可用陈述语气）They are willing surrender provided they are given free passage.8）在if引导的虚拟条件句中，若有were, had, should,在书面语中可省去if ,将were等提到主 语前，形成倒装。Should there be a good film tomorrow. I would go to the theatre with you.We
15、re it not for your help. I wouldn t be succeed.例 1： Chris tie st ared angrily at her boss and tu rned away, as thoughout of the office.A. went B. gone C. to go D. would go答案 C. to go注释as though或as if引导的状语从句中，从句主语和主句主语相同时，从句中可省略主语和 部分谓语，女口： 1） She paused, as if to let the painful memories pass.省略 she wanted）2） From time to time Jason turned round as though searching for someone. 省略 he were）3） The boy started, as if awakened from some dream.（省略 he were）由此可见，本题中省略 she wanted。译文克里斯蒂愤怒地盯了老板一眼并转过身去，似乎想走出办公室。例 2: Id rat her youby tr ain, because I cant bear the idea of your being in an airplanein
