托福考试辅导：语法讲解（25）

考点三 连接从句或不定式

介词之后还可以接宾语从句或不定式短语，但要借助于
连接代词  (如：what , which, whom)
或连接副词  (如：how, when，where)
例句：         I knew nothing about how he got the green card.
 She's pretty hesitant about which one to choose.

例题：
(1)
The Cubists were concerned with how----a given subject from different points of view simultaneously.
(A) represented
(B) do they represent
(C) to represent
(D) representing

答案：C
解释：介词with后面的宾语不完整, C 是不定式短语作宾语. A D都不足以和how构成宾语从句;  B不应用疑问句语序, 若去掉do则是正确的

(2)
The scholarly interest in perception stems largely from questions about the sources and validity of what ----.
 (A) it is known as human knowledge
 (B) is known as human knowledge
 (C) known human knowledge
 (D) is human knowledge known

答案：B
解释：介词of的宾语残缺, B 构成宾语从句, 包含短语be known as；A多主语it; C 无法与what契合; D 语序错误

注意：介词后面不能够接 that 所引导的从句，除非in that连起来作为特殊的状语从句引导词，表原因
(3) (Exer1_21_31)
Soprano Julia Migenes-Johnson believes in that her Latin American background   helped her interpret the role of the Spanish character Carmen in a 1984 opera film.
应改为：believes
解释：介词后面一般不能够接that 引导的从句。除非in that连起来

(4)
Hovercraft, or air-cushion vehicles, are unusual ---- travel over land and water on a layer of air .
 (A) they
 (B) in they
 (C) that they
 (D) in that they

答案：D
解释：空格前是句子的主谓语，空格后是谓语结构，空格处需要从句引导词及从句主语，只有D符合题意，in that是特殊的状语从句引导词，表原因
词汇：hovercraft: 水翼船,  cushion: 垫子