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题库 / Prep2008E1-SC-217
Not one of the potential investors is expected to make an offer to buy First Interstate Bank until a merger agreement is signed that includes a provision for penalties if the deal were not to be concluded.
is expected to make an offer to buy First Interstate Bank until a merger agreement is signed that includes a provision for penalties if the deal were
is expected to make an offer for buying First Interstate Bank until they sign a merger agreement including a provision for penalties if the deal was
is expected to make an offer to buy First Interstate Bank until a merger agreement be signed by them with a provision for penalties if the deal were
are expected to make an offer for buying First Interstate Bank until it signs a merger agreement with a provision for penalties included if the deal was
are expected to be making an offer to buy First Interstate Bank until they sign a merger agreement including a provision for penalties if the deal were
题目分析：
略。
选项分析：
A选项：Correct. 本选项在语法和逻辑上均是正确的。if the deal were中的if可以理解为in case(that)，身后接虚拟语气，虚拟条件句不一定非要虚拟主句才能使用（if the deal were这个用法其实也和if any类似，作为独立成分出现在句中）。另外，that includes a provision for penalties是a merger agreement的定语从句，这里的倒装是因谓语部分is signed太短，因而为了突出主干而倒装。
B选项：代词they没有指代对象；介词短语for buying First Interstate Bank需改为不定式短语to buy First Interstate Bank。这点考查了不定式和ing的区别，用之于本题，由于buying/to buy是offer的定语，所以应根据主句对buy事件的影响决定。显然地，主句make offer的发生会直接影响buy事件的发生与否，因此应该用不定式短语。另外，虚拟语气应用were而不是was。
C选项：be signed是动词原型，时态有误；代词them没有指代对象。
D选项：谓语动词are expected to应改为is expected to，主谓不一致；介词短语for buying First Interstate Bank需改为不定式短语to buy First Interstate Bank错误同选项(B)；虚拟语气用was错误同选项(B)；代词it只能指代物而不能指代人。
E选项：谓语动词are expected to应改为is expected to，主谓不一致；代词them没有指代对象。
A选项：Correct. 本选项在语法和逻辑上均是正确的。if the deal were中的if可以理解为in case(that)，身后接【虚拟语气！】，虚拟条件句不一定非要虚拟主句才能使用（if the deal were这个用法其实也和if any类似，作为独立成分出现在句中）。另外，that includes a provision for penalties是a merger agreement的定语从句，这里的倒装是因谓语部分is signed太短，因而为了突出主干而倒装。
虚拟语气是说话者用来表示主观愿望、猜测、建议或者与客观事实不符的假设时用到的语气，主要通过谓语动词的特殊形式来表示。
基本结构
（1）. 与现在事实相反的假设：一般过去时（be用were)，主句结构{ should(would)等+动词原型}
例如：If they were here ,they would help you.如果他们在这，会帮助你的。
（2）. 与过去事实相反的假设：过去完成时主句结构：{should(would)等+have+过去分词}
例如：If he had come yesterday,Ishould(would)have told him about it.如果他昨天来的话，我会把这件事告诉他的。
（3）. 表示对将来不大发生的事的假想。一般过去时，were+不定式，should+动词原形；主句结构：{should(would)+动词原形。
例如：If you succeeded ,everything would be all right.如果你将来成功了一切都会好的。
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