SAT语法要点之比较结构

2013-02-28 00:00:00来源：互联网

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　　二、最新真题

　　1. In some species of birds, such as the peafowl, the plumage of the male is more colorful and more variegated than the female.

　　(A) than the female

　　(B) than are the females

　　(D) compared to the female

　　(E) compared with females

　　解析：比较结构more…than…，注意一下比较对象概念、性质、数量、在句子里成分上的对等是否相同。

　　2. The introduction of (A) paraffin wax in 1830 enabled (B) candle makers to produce candles that burned more clean (C) than those made with (D) tallow or beeswax. No error (E)

　　解析：比较结构more…than…，有时sat考题考的是最简单，却最容易忽略的，形容词单音节的比较级是不用加more的。

　　3. Unlike other predators, which are being studies because their populations are declining, ecologists are studying coyotes because the coyote population is growing in suburban areas.

　　(A) ecologists are studying coyotes

　　(B) ecologists have been studying coyotes

　　(D) coyotes are being studied by ecologists

　　(E) coyotes, being studied by ecologists

　　解析：比较结构unlike…放在句首，一般情况是与主语相比较, 保证比较对象概念、性质、数量、在句子里成分上的对等。

　　4. A mixture of jazz and classical idioms, the music of Gershwin was more innovative than most of his contemporaries.

　　(A) than most of his contemporaries

　　(B) than most of his contemporaries were

　　(D) than that of most of his contemporaries

　　(E) than most of his contemporaries, as far as music concerned

　　解析：比较结构more…than…，保证比较对象概念、性质、数量、在句子里成分上的对等;比较对象应该为the music of Gershwin和most of his contemporaries，前者是物，后者是人，比较对象性质不同。

　　5. Chinese watercolors have become more popular than American and European artists who are their contemporaries.

　　(A) American and European artists who are their contemporaries

　　(B) contemporary American and European artists

　　(D) those of American and European pictures of the same period

　　(E) those by contemporary American and European artists

　　解析：比较结构more…than…，保证比较对象概念、性质、数量、在句子里成分上的对等;比较对象应该为Chinese watercolors和American and European artists，前者是物，后者是人，比较对象性质不同。

　　6. Eating food that has a high concentration of fat causes essentially the same reaction in the stomach than if you eat too fast.

　　(A) than if you eat

　　(B) than to eat

　　(D) as eating

　　(E) as it does when eating

　　解析：比较结构more…than…，保证比较对象结构一致;比较对象应该为Eating food that has a high concentration of fat和if you eat too fast，前者是动名词短语，后者是从句，比较对象结构不一致。

　　7. Because of its innovativeness and its (A) effective presentation, Mary’s science project received (B) more judges’ votes at the exhibit (C) than did Jim (D). No error (E)

　　解析：比较结构more…than…，保证比较对象概念、性质、数量、在句子里成分上的对等;比较对象应该为Mary’s science project和Jim，前者是物，后者是人，比较对象性质不同。

　　注意：当比较主语时，为了避免歧义，助动词习惯性补出，而且多用倒装

　　8. Experts who decipher (A) ancient written languages report (B) that the Indus civilization’s script is more difficult (C) to decode than other civilizations (D). No error (E

　　解析：比较结构more…than…，保证比较对象概念、性质、数量、在句子里成分上的对等;比较对象应该为the Indus civilization’s script和other civilizations，前者是script，后者是civilization，比较对象概念不同。

　　9. Because (A) sound waves travel faster (B) in liquids than they do (C) in gases, the speed of sound in water is greater than that of sound (D) in the air. No error (E)

　　解析：该题中出现了两个比较结构faster…than…与greater…than…;前者使用代词they，因为这里要求特指，即前后同物;后者用的是代词that，是泛指，即前后同类不同物。

　　10. Because young children do not organize their attention or perceptions systematically, like adults, they may notice and remember details that their elders ignore.

　　A. like adults

　　B. like adults do

　　C. as adults

　　D. as adults do

　　E. as an adult

　　解析： A选项和D选项都符合语法规则，也都和前面的children保持数的一致性，从语法规则上讲是都正确的。但是A存在歧义，因为like adults可以与前一个分句构成整体也可以与后一个分句构成整体。这里可以使用as结构，因为前后两个分句的助动词不一样，as结构的助动词和前一个分句一致的话，就应该和前一个分句构成整体;同样，和后一个分句的助动词一致的话，就应该和后一个分句构成整体。

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