2.1.3 名词单复数一致 Noun Agreement（★★）
出题频率约1%，每套题目中出现0~1题。
考点速递
对于名词来说，形式上的变化最主要的就是单复数的变化，所以这个词性最主要的考点就是单复数的情况。在SAT语法中，最典型的考法是考查同一个句子或者相邻的两个句子中，意义上有联系的两个名词在单复数上要一致。
误：The origins of the Teapot Dome scandal can be traced to the presidency of Theodore Roosevelt, William Howard Taft, and Woodrow Wilson.
正：The origins of the Teapot Dome scandal can be traced to the presidencies of Theodore Roosevelt, William Howard Taft, and Woodrow Wilson.
在原句中，由于句意要表达三个总统的presidency（总统任期），每个总统都有一个presidency，所以有三个presidency，应该使用复数presidencies。
知己知彼
考题速递
1. As I walked through the exhibit, I overheard a visitors'remark, “You know, that grandfather clock actually runs. Its glass door swings open, and the clock can be wound up.”（OG Test 2-20）
A. NO CHANGE
B. visitors remarking
C. visitor remarked
D. visitor remark
解析：题目画线部分前面有不定冠词a修饰，所以后面的名词visitor要用单数形式，排除A、B选项。根据前面overheard一词的固定用法overhear somebody do something，排除C选项。
答案：D
2. Consequently, anyone considering a career as a video game designer must be skilled writers and speakers.（OG Test 4-40）
A. NO CHANGE
B. a skilled writer and speaker
C. skilled both as writers and speakers
D. both skilled writers and speakers
解析：句中画线部分skilled writers and speakers应该与本句主语anyone considering a career as a video game designer相对应。由于anyone（任何一个）属于单数的不定代词，所以画线部分也应该使用单数。
答案：B
3. In 1897, Charlotte Wiberg wed Arthur St. Andrassy in an unlikely places — inside a lion's cage at a Boston zoo.（Khan Academy Language Use: Noun Agreement 1）
A. NO CHANGE
B. venues
C. locales
D. location
解析：句中画线部分places应该与之前的不定冠词an相对应，所以画线部分应该使用单数。本题看上去像是辨析四个表示地点的名词的意思，实际是选择单复数。这种情况提示我们在选择的时候要注意先观察选项的形式，通过单复数的变化来选择要简单很多。
答案：D
4. The attorneys, who are both officer in a bankruptcy field, believe that the recession will soon end.（Khan Academy Language Use: Noun Agreement 5）
A. NO CHANGE
B. practitioners
C. counselor
D. worker
解析：句中画线部分officer应该与画线之前的复数谓语are相对应，所以画线部分相应也使用复数。
答案：B
5. The store's most successful fall sellers were its school item.（Khan Academy Language Use: Noun Agreement 12）
A. NO CHANGE
B. supplies
C. material
D. good
解析：句中画线部分应该与前面主语名词fall sellers单复数对应一致，同时参照谓语were为复数形式，应该使用复数形式supplies。
答案：B
6. One of Mario's sisters, Isabella, acted like divas around their mother, Rosalina.（Khan Academy Language Use: Noun Agreement 21）
A. NO CHANGE
B. a princess
C. members of royalty
D. prima donnas
解析：句中画线部分divas应该与画线之前的单数主语One of Mario's sisters, Isabella相对应，所以画线部分相应也使用单数。
答案：B
7. No matter how hopeless their plots may seem, each of the books in The Hunger Games series has a positive ending.（Khan Academy Language Use: Noun Agreement 35）
A. NO CHANGE
B. positive terminations
C. positive finales
D. positive conclusions
解析：句中画线部分a positive ending应该与画线之前的单数主语each of the books相对应，所以画线部分相应也使用单数。
答案：A
8. Although some research suggests that caffeine consumption may be counterproductive, many people consider coffee, tea, and other caffeinated beverages to be something necessary for their productivity and mental health.（Khan Academy Language Use: Noun Agreement 43）
A. NO CHANGE
B. necessities of
C. a necessary part of
D. something essential to
解析：句中画线部分something necessary for应该与画线之前的复数名词caffeinated beverages相对应，所以画线部分相应也使用复数。
答案：B
9. According to research on health and medicine in the Caribbean territories during the eighteenth century, the impact of an infectious disease depended partially on external factor like geography, residential arrangements, and trading patterns.（Khan Academy Language Use: Noun Agreement 45）
A. NO CHANGE
B. component
C. characteristic
C. circumstances
解析：句中画线部分factor应该与画线之后的复数名词geography、residential arrangements、trading patterns相对应，所以画线部分相应也使用复数。
答案：D