在SAT语法中，比较结构要求的比较对象概念要对等，比较的性质要一致，比较的结构要平衡。当形容词和副词用于比较结构时，它们采取特殊的句法形式。下面就是SAT语法考点比较结构大练兵。
1. The primatologist has argued that sustained observation of a few animals provides better behavioral data than does intermittent observation of many animals.
(A) provides better behavioral data than does intermittent observation of many animals
(B) provides better behavioral data than many animals are observed intermittently
(C) providing better behavioral data than does intermittent observation of many animals
(D) do provide better behavioral data than intermittent observation of many animals do
(E) in contrast to intermittent observation of many animals, provides better behavioral data
2. In a recent year, more tourists from the United States visited museums in Great Britain than Canada.
(A) Canada
(B) Canada did
(C) compared to Canada's
(D) Canadian ones
(E) in Canada
3. The campus newspaper does not print as much world news as does my hometown;
(A) as does my hometown
(B) as does my hometown newspaper
(C) compared to what my hometown does
(D) like my hometown newspaper does
(E) like the one in my hometown does
4. The duties of a firefighter are often as dangerous as a police officer.
(A) as a police officer
(B) as those of a police officer
(C) like a police officer
(D) such as a police officer
(E) like a police officer's
5. Finding a wide variety of financial services in a small city is usually not as easy as it is in metropolitan areas.
(A) it is
(B) is that
(C) for those
(D) for that
(E) are those
专项训练：1-5：AEBBA
通过以上SAT语法考点比较结构大练兵，SAT语法的比较结构，当比较两个事物时，必须保证二者的概念、性质、数量、结构以及在句子里成分的对等。注意了这些要点，在比较结构这个考点上，同学们就可以做到不失分了。
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