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以下是引用thing_12在2008-6-27 0:59:00的发言：
GWD3-Q27: Competition in the mid-nineteenth century by large western farms gradually caused farmers in Pennsylvania to turn to livestock raising, but before that it was predominantly grain-producing. - Competition in the mid-nineteenth century by large western farms gradually caused farmers in Pennsylvania to turn to livestock raising, but before that it was predominantly grain-producing.
首先that按照句子意思是指竞争，但是指代的当中修饰词太多，所以离开太远，不能用，二：it无指代。。如果按照语法，只能指代livestock。。逻辑错误。 B：Once predominantly a grain-producing state, competition in the mid-nineteenth century from large western farms gradually was causing Pennsylvania’s farmers to turn to livestock raising. B的错误在于once后面的逻辑主语是句子主语。逻辑意思错误。was时态不对。。 B：Pennsylvania’s farmers were gradually caused to turn to livestock raising by competition from large western farms in the mid-nineteenth century, but before that it was predominantly a grain-producing state. 这里最明显的错误就是和A一样，it无指代，而且采用被动，并且改变修饰词的位置。 C：It was once predominantly grain-producing, but competition in the mid-nineteenth century by large western farms was gradually causing Pennsylvania’s farmers to turn to livestock raising. 时态错误，it无指代。 - Pennsylvania was once a predominantly grain-producing state, but competition in the mid-nineteenth century from large western farms gradually caused the state’s farmers to turn to livestock raising.
同意这个 这题怎么找答案呀,请NN们说一下,解题思路.
[此贴子已经被作者于2008-6-27 12:48:53编辑过] | 
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发表于 2008-6-27 00:59:00
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