3. 名词的数应与谓语动词一致

　　全真例题分析
　　(1) Approximately fifty percent of the package utilized in the United States are for foods and beverages. (92.5)
　　[答案] A 主语是package的百分比率，谓语动词are则决定了package的复数形式。
　　(2) Human being have thirty-three or thirty-four vertebrate, bat a snake may have as many as three hundred. (93.8)
　　[答案] A 谓语动词have表明主语应是复数形式，即human beings。
　　(3) Beneath the deep oceans that cover two-thirds of the Earth tantalizing secret of the planet are concealed. (91.10)
　　[答案] C 谓语动词are 决定了主语secret应接复数形式-s。

　　4. 一个名词修饰限定另一个名词时，第一个名词只能用单数形式
　　解题要点 当你看到两个名词连用时，一定留意第一个名词的单数的形式。

　　全真例题分析
　　(1) Employments agencies bring together persons qualified for specific jobs and employers who have those jobs available (90.10)
　　[答案] A 名词emplogments修饰说明后面的名词agencies，其作用相当于一个形容词，故应用单数形式。
　　(2) Acrylic paint enables artists to experiment with many colors effects. (90.5)
　　[答案] D名词colors修饰说明effects，应用其单数形式。
　　(3) Susan Sontag*s aversion to the traditional critical practice of extracting morals meanings from art is reflected in her novels. (92.1)
　　[答案] B morals应用单数形式修饰后面的名词meanings。