SAT語法：SAT考試中的PK原則解析

掌握SAT語法考點(diǎn)，是大家在備考SAT考試時最重要的一個項(xiàng)目。SAT語法的IS題，不僅考察句子的正確性，還會考察句子表達(dá)的好壞，好壞的標(biāo)準(zhǔn)有兩個，一個是clear,一個是precise。我們將對語法沒有錯誤的選項(xiàng)進(jìn)行好壞對比的原則成為PK原則。

　　關(guān)于clear：
　　Countries included in this varied and interesting study of economic theory was the United Kingdom, Germany, Sweden, and France.
　　(A). Countries included in this varied and interesting study of economic theory was
　　(B). Countries included in this varied and interesting study of economic theory were
　　(C). Countries being included in this varied and interesting study of economic theory was
　　(D). Varied and interesting, this study of economic theory included countries that were
　　(E). In this varied and interesting study of economic theory, such countries included as
　　上題中，B與D選項(xiàng)是沒有語法錯誤的，但是D選項(xiàng)里countries that were 完全可以去掉，加入的話會使句子啰嗦重復(fù)，違背了clear的原則，所以選B。

　　關(guān)于precise:
　　Our team has worked for several months on a robot for the science fair that we plan on entering in the robotics division.
　　(A). months on a robot for the science fair that we plan on entering in the robotics division
　　(B). months on a robot that we plan to enter in the robotics division of the science fair
　　(C). months on a robot that we planned entering in the science fair, robotics division
　　(D). months, we plan to enter a robot for the science fair in the robotics division
　　(E). months, we are planning to enter a robot in the robotics division of the science fair
　　上題中，A選項(xiàng)與B選項(xiàng)是正確的，但是A選項(xiàng)中，that后的定語成分與所要修飾的名詞robot之間隔了一個短語，即for the science fair，可能會引起修飾fair的歧義，指代不夠準(zhǔn)確，因此選B。

　　特殊比較：Because比because of, in that, owe to等等要好
　　At lunchtime, Kevin paid for Anita's hamburger; the reason is because he owed her money.
　　(A). hamburger; the reason is because he owed
　　(B). hamburger; this was because he owed
　　(C). hamburger, in that he owed
　　(D). hamburger because he owed
　　(E). hamburger because of owing

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