句子成分缺失是SAT語法考試題型中最容易出現的部分，也是考生相對比較難以理解和解答的部分。下面為大家介紹了一些關于這個題型的相關信息，是以例題和解析的形式出現的，便于大家的理解。下面是詳細內容。

　　1. Although most people think of Egyptian papyrus as the earliest paper, during the Han Dynasty, the Chinese developing a process to create paper from individual plant fibers that was much closer to techniques used in modern papermaking.

　　(A) the Chinese developing a process to create paper from individual plant fibers that

　　(B) the Chinese developing a process and creating paper from individual plant fibers that

　　(C) the Chinese that developing a process to create paper from individual plant fibers, it

　　(D) the Chinese developed a process to create paper from individual plant fibers, it

　　(E) the Chinese developed a process to create paper from individual plant fibers that

　　【分析】

　　A, B都不是完整的句子。Although后面是個完整的從句，但在從句后面

　　有主句。雖然主語Chinese出現了，但沒有謂語動詞與之相配。我們在前面提到過，分詞結構式不能做謂語的，即developing不能單獨做謂語。劃線部分的后面是that引導的定語從句，整個句子還是沒有從句。所以A, B排除。

　　C的問題是，如果把“it was much closer…”作文主句和although從句連接，句意上無法成立。同時，“the Chinese developing…”應當作為一個結構來看待，而“名詞 + doing”的結構是SAT認為的不符合簡潔性的要求。

　　D的問題是run-on, 整個句子里有三個完整的小句子，卻只有although一個連詞。

　　正確答案: E

　　2. Although the dancers were nervous at the beginning of their performance, having shown remarkable ease as the performance progressed.

　　(A) having shown remarkable ease as the performance

　　(B) once they have showed remarkable ease when the performance had been

　　(C) but showing remarkable ease as the performance

　　(D) they showed remarkable ease as the performance

　　(E) but they showed remarkable ease when the performance

　　【分析】

　　Although引導一個從句，從句在逗號處結束，那么逗號后應該是一個主句。

　　A選項沒有主句，應該是主句的內容寫成了個不完整句子，應排除。

　　在B選項中once是個連詞，它后面的句子應該是從句，同時，when也引導了一個從句。區分主句和從句的唯一標準就是：緊跟在連詞后面的句子為從句。在上述三個從句中，有三個連詞，所以后面都是從句。

　　C首先沒有主句;其次，用了although就不能用but了;同時，progress不能使用被動語態。

　　E的問題是although和but同時使用，屬于連詞重復。同時，E也沒有主句。

　　正確答案：D

　　3. Both Cinderella and Snow White being dependent on a prince to rescue them from unfortunate circumstances.

　　(A) Both Cinderella and Snow White being dependent on a prince to rescue them from unfortunate circumstances.

　　(B) Both Cinderella and Snow White were dependent on a prince to rescue them from unfortunate circumstances.

　　(C) Dependent on a prince to rescue them from unfortunate circumstances being both Cinderella and Snow White.

　　(D) Unfortunate circumstances were what both Cinderella and Snow White were dependent on a prince to rescue them from.

　　(E) Dependent on a prince to rescue them from unfortunate circumstance was both Cinderella and Snow White.

　　【分析】

　　A和C為不完整句型，因為沒有謂語動詞。C采用了倒裝結構，真正的主語在謂語動詞后面。在C里，只能是being做謂語動詞，而being是個分詞，不是謂語動詞。

　　E是個結構正確的倒裝句，但主謂不一致。真正的主語是both Cinderella and Snow White，是復數概念，所以was應改為were.

　　D選項表述過于復雜，不符合簡潔原則。

　　正確答案: B

　　通過上面的信息，大家可以看到，SAT語法題型中，句子的主要成分缺失的并不明顯，但是修飾成分缺失非常常見。大家可以在備考自己的SAT語法考試的時候，對此加以適當的參考和借鑒之用。