前程百利2015-06-08最新更新GMAT语法机经
Q48
考了capable of doing sth 但是没选这个选项
考点：
1. 固定搭配：
be able to do
be capable of doing
have ability to do ; ability of sb. to do
have capability to do doing ; capability of sb. to do doing
相关练习：来自new prep
The coyote is one of several recent ecological success stories: along with the white-tailed deer, the moose, and other species that are enlarging their natural domains, they have established themselves as supreme adapters in an era when the capability to adjust to the environmental changes wrought by human beings has created a whole new class of dominant large mammals.
A. they have established themselves as supreme adapters in an era when the capability
B. they have established themselves as being supreme adapters in an era when being able
C. it has established itself as a supreme adapter in an era when to be able
D. it has established itself as being a supreme adapter in an era when its ability (E)
E. it has established itself as a supreme adapter in an era when the ability
题目释义：The coyote is …: along with…, it has established …when the ability …has created …
考点：
主谓一致 准确用词
1. being在GMAT中常常是冗余的，冗余的情况基本是三种：多余、冒充as、冒充to be。
而极少出现的正确being的情况基本集中在两种：被动动名词eg. prep+being+done，进行时的被动语态eg. is being done。
选项分析：
A. they have错误：句首的coyoto是单数，而且the white-tailed deer与the moose都是单数，所以与他们对应的coyoto也应该是单数形式，并用it指代。
B. ①同上;②as being中being冗余;being able to不如the ability简洁。
C. 虽然不定式能够作为名词结构并作为主语，但后面一般接系动词，而不是has created，且形式上不如the ability简洁。
D. as being中being冗余;由于it指代的the coyote也只是类指，所以its ability显得是具体指代了，illogical。
E. Correct。
补充说明：
类指 — from A Comphrehensive Grammar of English Language：
1、不定冠词类指用法的限制：因为a/an的类指用法指的是某一类中任何一个具有代表性的成员。所以any可以替换a/an。但类指的a/an不能用来表示那些属于整个类别的特性。
如A tiger is becoming almost extinct.是错的，因为extinct是整个老虎类别的特性。
所以只能用The tiger is/Tigers are becoming almost extinct.
2、零冠词的类指用法：其逻辑含义是把类别当作一个无区分的整体。
3、定冠词的类指用法：
(1)与单数名词短语连用：表示一个由典型的样品所代表的那个类别(本题属于这种用法)
(2)与复数名词短语连用：国籍名称、以形容词为中心词指一群人的名词短语(the unemployed)
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