Season 1——manhattan 10(dermestid beetles)(已结贴)

毛毛carina

10. Used by many natural history museumcurators in the preparation of animal skeletons for display, dermestid beetles feed on the decaying flesh of animal carcasses, pulling with its mouthparts to strip the bone of any residual fat or muscle tissue.
        A. dermestid beetles feed on the decaying flesh of animal carcasses, pulling
        B. dermestid beetles feed on the decaying flesh of animal carcasses and pull
        C. the dermestid beetle feeds on the decaying flesh of animal carcasses in order to pull
        D. the dermestid beetle feeds on the decaying flesh of animal carcasses, pulling
        E.  the dermestid beetle feeds on thedecaying flesh of animal carcasses and it pulls

选项解析：
The plural subject in the original sentence,dermestid beetles, does not agree in number with the singular pronounits, which appears in the non-underlined part of the sentence. In order to correctly agree withits, the subject must be singular:the dermestid beetle.
(A) This choice is incorrect as it repeats the original sentence.
(B) The plural subject dermestid beetles does not agree in number with the singular pronoun its, which appears in the non-underlined part of thesentence. In order to correctly agree with its, the subject must be singular: thedermestid beetle. While verb tenseconsistency is usually desirable, using two present tense verbs in thissentence effectively separates feed and pull into twoindependent actions: the beetles feed on the decaying fleshand, separately, pull with…mouthparts. The original meaning of the sentence is that the pulling occurs aspart of the main verb feed,not independent of it.
(C) While the singular subject the dermestid beetle correctly agrees in number with the singular pronoun its, the modifier in order to pull altersthe original meaning of the sentence. The beetle feeds by using its mouthparts.The beetle does not feed in order to use its mouthparts.
(D) CORRECT.The singular subjectthe dermestid beetlecorrectly agrees in number with thesingular pronoun its. Also, the formpullingcorrectly indicates thatpulling with itsmouthpartsoccurs as part of the main action feeds, not independent of it.
(E) The singular subject the dermestid beetle correctly agrees in number with the singular pronoun its. While verb tense consistency is usually desirable,using two present tense verbs in this sentence effectively separates feeds and pulls into two independent actions: the beetle feeds on the decaying flesh and,separately, pulls with…mouthparts. The original meaning of the sentence is that the pulling occurs aspart of the main verb feeds,not independent of it. Finally, the use of the pronoun it is unnecessarilywordy; the subject of the verb pulls, the dermestid beetle, is clear without theuse of it.

题目点评：
本题涉及考点：代词，句子结构

观察五个选项可以发现，主谓一致不存在错误，区别只在于单复数主语的选择。出现这样的选项一般存在两种考察的可能：第一，代词。根据未划线的部分出现的代词来判断主语单复数，通常代词出现在后半句未划线部分。第二，逻辑意思。根据句意来判定主语的单复数形式。

通过未划线部分“its”判断，迅速排除A,B选项。剩下C,D,E，区别在于后半句与主句的关系不同。出现这样的情况，根据句意判断是最合理的。Pulling with its mouth parts tostrip the bone of any residual fat or muscle tissue 是伴随状语，表伴随的条件，具体的说就是说明feed 这个动作是如何进行的。

另外，从定冠词the 符合逻辑意思的角度来排除A,B选项也是合理的。

思维点评：
1. “D的pulling既不是表结果又不是并同时发生”——innerwarrior
V-ing 从句的三个作用：表伴随（的结果、状态、条件、原因等）；修饰主语；就近修饰前面一个名词。

做题小tips：
语法错误分两种，一种是绝对性错误，一种是有效性错误。我还是建议大家先从绝对性错误入手，再考虑有效性错误。因为有效性错误并不代表这个选项一定是错误的，GMAT 要求大家在五个选项里选最优的，而不是绝对正确的。

本次精华楼层：
1楼——若雪
2楼——纳丁Cat

AMBER513

看一下！               

南瓜0729

10. Used by many natural history museumcurators in the preparation of animal skeletons for display, dermestid beetles feed on the decaying flesh of animal carcasses, pulling with its mouthparts to strip the bone of any residual fat or muscle tissue.
       A. dermestid beetles feed on the decaying flesh of animal carcasses, pulling     根据非画线部分的its 应该用单数
       B. dermestid beetles feed on the decaying flesh of animal carcasses and pull    同A
       C. the dermestid beetle feeds on the decaying flesh of animal carcasses in order to pull
       D. the dermestid beetle feeds on the decaying flesh of animal carcasses, pulling
       E.  the dermestid beetle feeds on thedecaying flesh of animal carcasses and it pulls选D
根据句意 pulling应该是伴随结构

maxiv

10. Used by many natural history museumcurators in the preparation of animal skeletons for display,
   dermestid beetles feed on the decaying flesh of animal carcasses, pulling
with its mouthparts to strip the bone of any residual fat or muscle tissue.
       A. dermestid beetles feed on the decaying flesh of animal carcasses, pulling
   后面有its，复数错。
       B. dermestid beetles feed on the decaying flesh of animal carcasses and pull
   后面有its，复数错。
       C. the dermestid beetle feeds on the decaying flesh of animal carcasses in order to pull
   
       D. the dermestid beetle feeds on the decaying flesh of animal carcasses, pulling
   对
       E.  the dermestid beetle feeds on the decaying flesh of animal carcasses and it pulls
   and前后不平行 feeds ... and it pulls

做对了。

学到的东西
-----------------------------------------
1，注意这两个格式的区别：
【, pulling】是对main clause的补充说明，但这个pulling还是对main verb补充说明的一部分
【 and pull】把main clause的动作变成了两个“相互独立的动作”
2，in order to 的“修饰，被修饰对象的关系”
in order to扭曲句意。不是feed为了pull，而是pull为了feed

balapupu

主谓一致，代词指代。
A：dermestid beetles 和后面的its 不符。
B：同1，伴随结构变成并列结构，改变句意。
C：in order to 改变句意。
D：right
E:and 连接两句话，前面最好有逗号。

daisyの小夢想

D
非划线部分有its mouthparts 说明beetle用单数 排除AB
剩下 C in order to表目的，从语意判断这里不是表目的 而是表伴随
E and it， 那个it redundant
所以选D pulling with its mouthparts pulling with its mouthparts to strip the bone of any residual fat or muscle tissue表伴随 修饰主句 具体阐述beetle如何捕食。

innerwarrior

原来如此。。。哎。。。惭愧，基础太差了。。。少壮不努力，老大看英语啊。。。哎～～谢谢毛毛

毛毛carina

毛毛头像比较影响做题思路哈，呵呵~~kidding：）

-- by 会员 shentao1237 (2011/9/15 0:00:15)

哈哈，很欢乐有木有

shentao1237

毛毛头像比较影响做题思路哈，呵呵~~kidding：）

shentao1237

D
AB单复数问题
D的in order to 没用对
E it没对