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已经搜索过帖子了，未果。
题目是：
One of the earliest known birds with a beak and contour feathers, Confuciusornis sanctus, with large clawlike "thumbs" on its wings, which probably helped them to climb up to a launching position
for flight. (A) with large clawlike "thumbs" on its wings, which probably helped them to (B) with large clawlike "thumbs" on their wings, which probably helped it to (C) had large clawlike "thumbs" on its wings, which probably helped them (D) had large clawlike "thumbs" on its wings, probably to help it (E) had large clawlike "thumbs" on their wings, probably to help it 语法笔记上面说：
句子结构：One of … birds…, Confuciusornis sanctus, had … thumbs…, to help it … 主语是one，同位语Confuciusornis sanctus，谓语是had，宾语thumbs，后跟不定式to help…作目的 状语。 考点：指代一致、句子结构 1) 指代一致，one of+复数名词作主语时，强调的是one，所以谓语动词及后面的代词都是单数。 2) 句子结构，作谓语的成分在选项中同时以修饰成分出现时，要注意作修饰成分的这些选项是否有 谓语，句子结构是否完整。 (A) 句子缺少谓语；复数them没有指代对象，且与前面的its不一致。 (B) 句子缺少谓语；复数their指代错误，且与后面的it不一致；which就近指代wings错误，应该指代 thumbs。 (C) 复数them没有指代对象；which就近指代wings错误。 (D) 正确，its, it指代Confuciusornis sanctus，to help不定式作目的状语。 (E) 复数their指代错误，且与后面的it不一致。
对C答案有疑问的地方在于：which 不是本来就修饰的thumbs么，因为on its wings 只是一个介词短语是一体的啊。。。。。
语法菜鸟，跪求指点。勿拍。 | 
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发表于 2013-4-10 19:20:57
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