本文进行GMAT 语法比较题进行了汇总。希望考生充分利用文中整理内容，提高备考效率。
1、.Inflation has made many Americans reevaluate their assumptions about the future; they still expect to live better than their parents have, but not so well as they once thought they could.
(A) they still expect to live better than their parents have
(B) they still expect to live better than their parents did
(C) they still expect to live better than their parents had
(D) still expecting to live better than their parents had
(E) still expecting to live better than did their parents
the key:B
比较考点：do的用法
2、.Inuits of the Bering Sea were in isolation from contact with Europeans longer than Aleuts or Inuits of the North Pacific and northern Alaska.
(A) in isolation from contact with Europeans longer than
(B) isolated from contact with Europeans longer than
(C) in isolation from contact with Europeans longer than were
(D) isolated from contact with Europeans longer than were
(E) in isolation and without contacts with Europeans longer than
the key:D
比较考点：比较对象 Inuits of the Bering Sea were——Aleuts or Inuits of the North Pacific and northern Alaska were
3、Inflation has made many Americans reevaluate their assumptions about the future; they still expect to live better than their parents have, but not so well as they once thought they could.
(A) they still expect to live better than their parents have
(B) they still expect to live better than their parents did
(C) they still expect to live better than their parents had
(D) still expecting to live better than their parents had
(E) still expecting to live better than did their parents
the key:B
比较考点：do的用法
4.Inuits of the Bering Sea were in isolation from contact with Europeans longer than Aleuts or Inuits of the North Pacific and northern Alaska.
(A) in isolation from contact with Europeans longer than
(B) isolated from contact with Europeans longer than
(C) in isolation from contact with Europeans longer than were
(D) isolated from contact with Europeans longer than were
(E) in isolation and without contacts with Europeans longer than
the key:D
比较考点：比较对象 Inuits of the Bering Sea were——Aleuts or Inuits of the North Pacific and northern Alaska were
4.Los Angeles has a higher number of family dwellings per capita than any large city.
(A) a higher number of family dwellings per capita than any large city
(B) higher numbers of family dwellings per capita than any other large city
(C) a higher number of family dwellings per capita than does any other large city
(D) higher numbers of family dwellings per capita than do other large cities
(E) a high per capita number of family dwellings, more than does any other large city
the key:C
比较考点：do的用法
5.New techniques in thermal-scanning photography, a process that records radiation from surface areas, makes it possible to study the effects of calefaction, or warming, of a river in greater detail than ever before.
(A) makes it possible to study the effects of calefaction, or warming, of a river in greater detail than ever before
(B) make it possible to study, in greater detail, the effects of calefaction, or warming, of a river than ever before
(C) have made it possible to study in greater detail than ever before the effects of calefaction, or warming, of a river
(D) make possible the study of the effects of calefaction, or warming, of a river in greater detail than it ever was before
(E) has made it more possible than ever before to study in greater detail the effects of calefaction, or warming, of a river
the key:C
lemonee:more......than ever before
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