题目
【单选题】13、We now know that about ( ) all the kinds of seaweed are animals.A. one fourthB. one fourth ofC. one four ofD. the one fourth
【单选题】13、We now know that about ( ) all the kinds of seaweed are animals.
A. one fourth
B. one fourth of
C. one four of
D. the one fourth
题目解答
答案
B. one fourth of
解析
本题考查分数表达与介词的使用。关键点在于:
- 分数结构:正确形式为基数词+序数词(如
one fourth),但需注意是否需要介词of; - 介词
of的作用:当分数修饰具体名词时,需用of引出被修饰的对象; - 选项辨析:排除拼写错误(如
four误用)和冗余冠词(如the)。
选项分析
选项A:one fourth
- 错误原因:分数直接修饰名词时缺少介词
of,结构不完整。正确应为one fourth of all the kinds of seaweed。
选项B:one fourth of
- 正确性:
one fourth表示“四分之一”,of引出被修饰的名词短语all the kinds of seaweed,符合语法规范。
选项C:one four of
- 错误原因:
four应为序数词fourth,拼写错误导致意义不成立。
选项D:the one fourth
- 错误原因:定冠词
the多余。此处表示比例而非特指,无需使用the。