下面為大家總結了SAT語法改進句子題的常見考點，共6個。SAT語法改進句子題是對大家的英語基礎和解題技巧要求都比較高，大家如果能夠掌握這些常見的考點，也會對備考有非常大的幫助的。

　　SAT語法改進句子(Improving Sentences)題常見考察點：

　　1. 支離破碎的句子。 例如： Although he studies hard.

　　2. 沒有用標點符號來分割句子。例如：In the past I worked at a language school in New Zealand now I am back in China.

　　3. 使用不正確的逗號切割句子。例如： Alex finished her homework early, after that she drove to Maria’s house.

　　4. 邏輯錯誤，如該使用but連接卻使用了and。邏輯指代錯誤等。

　　5. 修飾詞位置不當

　　6. 結構不對稱等。

　　有些連接詞后要對稱，如： neither…nor…, either… or…, both… and…, the more… the more…, not only… but also… 特別是but also 部分經常容易有錯誤。還有使用and 連接兩個沒有直接關系的兩個句子。

　　請看如下幾個例子：

　　1. Nineteenth-century nihilists were concerned with neither the origins of philosophical thought nor how societal laws developed. (x) (結構不對稱)

　　Nineteenth-century nihilists were concerned with neither the origins of philosophical thought nor the development of societal laws. (√)

　　2. The junior class built a homecoming float, and it had lights and a sound system that worked amazingly well. (x) (使用and 連接兩個沒有直接關系的兩個句子)

　　The junior class built a homecoming float. It had lights and a sound system that worked amazingly well. (√)

　　3. Ben Franklin was a respected and talented statesman, and he was most famous for his discovery of electricity. (x) (轉折關系，連接詞使用不當)

　　Ben Franklin was a respected and talented statesman, but he was most famous for his discovery of electricity. (√)

　　4. George and Liam argued about football while I tried to study loudly. (x) (修飾詞位置不當)

　　George and Liam argued loudly about football while I tried to study. √

　　5. Wrapped in my towel, the sun was not a problem。(x) (邏輯錯誤)

　　Wrapped in my towel, I found that the sun was not a problem. √

　　例題分析：

　　Credulous people believe in the existence of extra-terrestrial beings, most scientists and other informed students of nature do not。

　　A. Credulous people believing

　　B. While credulous people believe

　　C. Credulous people are always believing

　　D. Since credulous people believe

　　E. Credulous people tend to believe

　　解析：本句劃線部分為該句的主語和謂語，看完全句會發現這是個用逗號分隔的句子，顯然不符合要求。但因標點處沒有劃線，所以不能改動。根據兩句的意思可以看出應該是轉折關系，所以B既解決了邏輯問題，有避免了逗號切割句子的問題。A構成句子碎片，所以不正確。C和E沒有解決逗號分隔句子的問題。 D邏輯關系不對。