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题库 / Prep2007E1-SC-14
Having finally reached a tentative labor agreement with its company's pilots, it must now be determined by the airline's board of directors how the airline can both increase profits and compete more effectively for customers than they did in the past.
it must now be determined by the airline's board of directors how the airline can both increase profits and compete more effectively for customers than they did in the past
it must now be determined by the airline's board of directors how the airline can both increase profits and must compete more effectively than in the past for customers
the airline's board of directors must now determine both how to make the airline increase profits and compete more effectively for customers than they did in the past
the airline's board of directors must now determine how the airline can both increase profits and compete more effectively for customers than it did in the past
the airline's board of directors must now determine how the airline can both increase profits and also how to make it compete more effectively than in the past for customers
前置伴随状语的逻辑主语需要是主句主语，AB为dummy pronoun不能作为前置伴随状语的逻辑主语， eliminate A&B
Both X and Y 中X Y 需要平行, C E不符合， eliminate C E
猜测考点是伴随状语+平行结构。
Having finally reached 修饰 it？？？ 排除AB，剩下CDE。
both and 平行结构···剩下D了
1. it根据句意是要指代公司，但是前文没出现，无法指代，杀AB，后半句必须写清楚谁reached
2. both and 之中必须平行，杀BCE B横加must句意改变
3. A中 they指代不清
4. BE中 句尾 for customers有歧义
5. 主谓一致board+it ，杀C
it 指代模糊，(a)(b) eliminated
both increase.... and compete... 且 than ____ did in the past，底線處代指的是 "the airline" 為單數，(c)(e) eliminated
主语是airline所以应该用than it did in...排除AC；看both and排除BE
看全题！！！！！（前半部分状语的主语）
DE的区别：both and, and前后要平行。E是两个How平行，但是忽视了both 这个词
C. both-and 不平行
选了D，觉得it指代airline没问题呀，是因为it did应该被省略么？
主语+平行问题
D中it 指代airline，是airline make increase profits and compete.
C中是directors make airline increase profits and compete.
both and
having reached的主语是the airline's board,A,B的it从语法上指代agreement,不能作为having reached的逻辑主语，所以A,B错
C，how to make..., to make 的动作发出者不明, both...and...不平行
E, both...and also不平行
逻辑主语和both and 平行