备考指导

　　虚拟语气在强制性语气的宾语从句中的运用

　　即表示建议、命令、劝告、决心等主观色彩的动词 + that + (should) + 动词原形， 其中should 经常被省略。这类动词包括：

　　suggest, propose, recommend, demand, order, command, desire, require, insist, advise, decree (发布命令;下令), determine, prefer, stipulate, move(动议，规定)，direct(命令)，maintain(坚持)，decide，ask

　　I prefer that you ( should ) not do that. 我认为你还是别干那件事的好。

　　注意一：

　　以上动词转化为名词(如：suggestion, proposal, demand, order, command, advice, desire, requirement, request, agreement, determination, preference , resolution, indication 等)后接同位语从句或表语从句时，从句要求用虚拟语气，其谓语部分用“(should)+ 动词原形” (should可省略)。

　　例：We are all for your proposal that discussion _____.

　　a. be put off b. was put off c. should put off d. is to put off 全句意思是：我们都赞成你的建议，把讨论推迟。答案是A。

　　注意二：

　　以上这类动词中有时候有的动词的宾语从句不用虚拟语气，必须根据句子的意思来判断。

　　What he said suggested(表明)that he did not agree with us.

　　It is/was + 形容词 / 过去分词 + that + (should) + 动词原形

　　这些形容词主要表示必要性、重要性、强制性、合适性、义务性，即某人对某事的反应。

　　important, natural, desirable, possible, astonishing, advisable(可取的， 明智的), anxious, appropriate, compulsory(义务的;强制的;强迫的), crucial (至关紧要的), eager, essential, fitting, imperative (命令的， 强制的， 必要的), improper, natural, necessary, obligatory (义不容辞的， 必须的), preferable, proper, urgent, vital, willing shocked, requested

　　It is necessary that we all should do our best to protect environment around us.

　　注意：

　　表示不可思议、滑稽、不可想象、令人吃惊这样的形容词如amazing, strange, odd, ridiculous, surprising, unthinkable，incredible等后的that从句中should一般不省略，而且翻译为“竟然”， 表示说话人的惊异、懊悔、失望等情感。

　　It is surprising that they should pass the time like that.

　　would rather…， would sooner…， had rather…， would just as soon…， would prefer… 意为“宁可，但愿” 从句用虚拟语气，若表示现在或将来的事情，谓语用过去时;若表示过去的动作，用过去完成时。

　　I would rather that you painted the room green.

　　在lest that …， for fear that…， in case that … 表示“唯恐，以免”引导的表示消极意义的目的主语从句中常用虚拟语气，从句用 should +动词原形。

　　He put his coat over the child for fear (lest )that he should catch cold. He emphasized it again and again lest she (should) forget.

　　Take a hat with you in case the sun is very hot (注意：该句陈述某一事实)