历年托福考试语法真题全面解析18

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6. The worldwide race to develop an affordable synthetic fuel has so far consumed billions of dollars and __________ few results.
(A) yielded
' y! ~9 Q. I2 A4 d(B) yielding
1 p( w  }: J+ ^  C1 K# W! d(C) yield ha
(D) has a yield of
  y" c3 \6 z# a3 j+ V0 Z  
答案：A
* E! u: q7 k' d+ }测试点：并列结构。
分析：and前后两部分，应同形式、同性质。此处and连接两个谓语部分，前面是consumed…，后面应也是一过去式的动词，即(A)yielded。
  
7. Experiments in the photography of moving objects __________ in both the United States and Europe well before 1900.
(A) have been conducting
/ M8 l3 [, s- i$ w(B) were conducting
! e/ f1 c/ ?: |4 e% R2 b(C) had been conducted
) _+ V- z4 e0 F! h8 v7 ^0 X; |9 L(D) being conducted
  
答案：C
测试点：时态。
# J8 _0 e7 }. Z6 d/ y! `/ B, _分析：本句有主语而缺谓语动词，应选择时态正确的动词作谓语。句中well before l900说明时间是“过去的过去”，时态应用过去完成时，故选(C)。(A)是现在完成时；(B)是过去进行时；(D)不能作谓语动词。
  
8. The University of Georgia, __________ in 1785, was the first state supported university in the United States.
" [9 K) q4 n1 W/ N) s1 m(A) chartered
7 j% x8 D9 Z- D$ m(B) was chartered
(C) it was chartered
" I$ M. p, v1 }4 ~& p: I(D) to be chartered
  
答案：A
测试点：分词短语作后置定语。
分析：此句是TOEFL常考句式。分词短语作定语放在它所修饰的名词后面(A)，相当于被动式的定语从句省掉关系代词which/that及系动词be。(B)若改为which was chartered，(C)用which代替it，(D)去掉to be，亦可。
  
9. Thanks to modern irrigation, crops now grow abundantly in areas where once __________ cacti and sagebrush could live.
(A) nor
6 [7 G& g6 j; ?! {2 r7 i(B) not the
(C) none other
(D) nothing but
  
答案：D
/ @! p8 x  R& d. W/ N测试点：短语。
3 ~/ a8 F/ x4 ~  R: \: R, Y分析：Nothing but是固定的短语。(A)nor通常不单独使用，应与neither连用；(B)not用于否定动词或形容词；(C)是错误说法。
1 h, {) K. t7 ~( H2 q( i& l" ^  
. l8 R7 x" y/ `' g+ R  g10. __________, in the late 1800’s, some libraries had to keep as many as twenty to thirty copies of each of Mary Jane Holmes’s books on hand.
(A) Inventories showing
(B) That show inventories
(C) Inventories show that
% K1 d. `9 U% Z  I(D) Showing the inventories
* j) X- b! V( ]$ G, k  
2 y& o. F3 Y% j答案：C
测试点：复合句。
分析：本句中some后的部分为从句，前面缺少主句，及连接词。应在答案中选择完整的主谓结构，即(C)。