(4) The mechanism by which brain cells store memories is ------- clearly understood.
  
(A) none
  
(B) no
  
(C) not
  
(D) nor (90.5)
  
[答案] C 否定系词is,应用副词not。
  
(5) Not woman held a presidential cabinet position in the United States until 1933. When Frances Perkins became secretary of labor. (89.1)
  
[答案] A Not 改为No.
 
3. 辨别词形相近的副词和形容词
  
hare (努力、副词)- hardly (几乎不、副词)
  
close (接近、形容词)- closely (接近、副词)
  
near (接近、形容词)- nearly (几乎、副词)
  
most (大多数的、形容词)-mostly(主要地、副词)
  
late (迟、晚、形容词)-lately(最近、副词)
  
全真例题分析
  
(1) Chief Joseph Flesche. A vigorous Omaha leader, worked hardly to make his nation a proud and progressive one. (93.1)
  
[答案] B hardly (几乎不)改为hard(努力)。
  
(2) Glaciers that develop nearly the North and South Poles advance into the sea. Break into pieces, and become icebergs. (90.8)
  
[答案] B 副词nearly意思是“几乎”。此句应改为near(接近)。
  
(3) Those electrons most closely to the nucleus are held electromagnetic force. (92.1)
  
[答案] B most closely 改为most close。