为帮助大学生学到权威的英语知识，本网站特提供以下资料：
三、平行结构
技巧：如果填空题中空格的后面有and, 或者and后面有空格，那么这道题目一定是考察平行结构。填空题中平行结构出现的形式是： A and B, A , B, and C
例1 ：The technique of recording, classifying, and___is known as accounting.
(A) an enterprise's transactions summary (B) the summarizing of an enterprise's transactions
(C) transactions of an enterprise are summarized (D) summarizing the transactions of an enterprise
分析：空格的后面是and, 一般考平行结构，空格处缺与前面recording、classifying并列的动名词。四个选项中只有(D)符合条件，故选(D)。
例2 ：Louis T. Wright, a surgeon, developed ingenious orthopedic braces, ___, and supervised the first use of Aureomycin on human patients.
(A) treating skull fractures that he pioneered in (B) pioneered in treating skull fractures
(C) which pioneered in treating skull fractures (D) he was a pioneer in the treatment of skull fractures
分析：空格后面是and, 空格处缺少和developed、supervised平行的谓语动词，因此选择(B)。
四、宾语从句结构
宾语从句的引导词在前面的主从复合句中已经提到。这里指出的是填空题中关于宾语从句考的最多的两个结构： state(陈述，表明)+that indicate(指明,表明)+that
例1 ：The quantum theory states ___, such as light, is given off and absorbed in tiny definite units called quanta or photons.
(A) energy that (B) that it is energy (C) it is energy (D) that energy
分析：空格前的谓语动词states一般接关系连词that引导的宾语从句，故首先排除C。空格后已有谓语动词，空格不应再出现谓语动词，因此(D)正确。
例2 ：Studies of the gravity field of the Earth indicate___yield when unusual weight is placed on them.
(A) although its crust and mantle (B) its crust and mantle to (C) that its crust and mantle (D) for its crust and mantle to
分析：空格处显然缺谓语动词indicate的宾语。(A)和(D)不能作宾语，可首先排除。(B)使句子结构混乱、语义不清，因此选择(D)，构成宾语从句。