下面就是今天旧汇编的内容，希望能够帮助同学们备考SAT考试，更多关于SAT备考的信息请进行关注网SAT备考频道，我们会每天给大家提供最新的SAT备考信息。
新旧SAT都覆盖的两个重要语法知识点：不完整句子和不间断句子，同时它们也是能帮助我们迅速排除干扰选项、提升准确率的两大技巧!
不完整句子和不间断句子之间的关系好比：“供不应求”与“供过于求”，这两者均是一种病态。前者因缺少完整句子所必须的成分而“营养不良”;后者因提供超过完整句子所必须的成分而“营养过剩”。笔者进行更进一步的解说。
(一)不完整句子(fragment Sentence)：
从语法角度来看，完整的陈述句需要有主和谓两种必备成分。如果哪一种成分的构成出现错误，使得句子文法结构不完整，并且造成理解上的困难，就成为了不完整句。
注意：从不完整句子概念入手，警示我们，在答题过程中，需梳理句子，判断其是否完整，若缺少成分，则可立即排除。接下来我们来仔细分析一下不完整句子出题的4种形式!
下面我们从一些具体的实例来进行分析，希望对大家的备考有所帮助。请继续关注网SAT频道!
1.1从句单独使用
例1：He sat there readingnewspaper every night. As he had been for thepast seven nights.
解析：从例句中我们可以清晰看出：连词As之前是一个完整句，但句号之后由连词as引导了一个单独从句，缺少主句与之相连，故构成了不完整句子。(主句和从句之间的关系犹如树根和树干，缺少树根供给营养，树干则不能存活，故从句不能单独使用!)
例2:The tide against men inthe nursing field began to change directions in the 1970s and1980s.Due in part to a UnitedStates Supreme Court decision that held that the women-only admissions policyof the Mississippi University for Women violated the Equal Protection Clause ofthe Fourteenth Amendment.
Question 8 of 11
A NO CHANGE
B 1980s.Which was due
C 1980s, due
D 1980s,this was due
解析：根据题目提示，首先梳理句子主干。你会发现连词due前已经是完整句，但due到句末则是由连词引导的从句，缺少主句。A,B排除，D选项为run-on，故选择C.
1.2一个句子中谓语部分不完整或仅有谓语无主语
例3：Mary, whois a pretty girl from China, reading a novel with her
friends, whoregards reading as a great pleasure.
解析：首先梳理主干，句子缺少谓语，故不完整。
例4：As the observer moves to the right-hand side of thepainting, the only clearly recognizable shape becomes the anamorphic skull. Its Holbein’sreminder that the wealth and worldly knowledge of the ambassadors will notprotect them from their ultimate fate—one which no human can avoid.
A NO CHANGE
B It’s(缺少谓语)
C There
D Their
解析：看似非常长的文章，但我们需要做的只有一步：梳理句子主干。从Its到that前，整体看成一个名词词组，that之后是一个完整句子可以忽略不计，那么可以清晰判断出第五句话只有主语Its Holbein’s reminder，为了使其完整，答案中一定要提供V，唯有B满足
例5：He found that, of the hundreds of cases of choleranear Soho, and all but ten involving people who lived near the contaminatedpump on Broad Street.
A NO CHANGE
B all butten involved(缺少主语)
C all butten involving
D and allbut ten involved
解析：答题思路同上
1.3现在分词-ing或动词不定式to do单独成句
例6：Mary always wears a helmet when riding a bicycle. Worrying that she may be hit on the roadby a flying stone.
解析：这种情况和第一种情况非常类似，只是将连词换成了非谓语：doing或todo，答题思路完全一样!
例7：She wrote herown Russian-language grammar textbook and translated texts from German andEnglish. She also wrote fiction. Includinga revision of Leo’s novella The Kreutzer Sonata.
A NO CHANGE
B wrote fiction, including
C wrote. Fiction including
D wrote fiction, it included
解析：梳理句子主干，很明显看出including引导了一个不完整句子，故A错，C同A缺少谓语，D为run-on。所以选择B
1.4连词多用导致句子缺少主句
例8：As long ascompanies continue to demand long hours from
workers, and managers shouldchampion napping as a means to keep employees happy, healthy,andfunctional.
A NO CHANCE
B workers;managers
C workers，managers，
D workers，managers
解析：梳理句子主干，分别由两个连词as long as和and引导一个从句，缺少主句，故A错;B分号前为不完整句子，排除;C 逗号不能直接并列主语和谓语。故答案：D
例9：While theseclasses are particularly helpful to young students developing basic researchskills, butadultpatrons can also benefit from librarian assistance in that they can acquirejob-relevant computer skills.
A NO CHANGE
B and
C for
D DELETE the underlined portion.
解析：同上，梳理句子主干，while和but同时存在，导致句子无主句，故将其删掉。答案：D
(二)不间断句子(Run-on)：
不间断句子即是run-on sentence,是指两个完整的独立句子之间，没有任何连词、冒号、或分号来对两个句子进行连接。
副词和介词不能连接两个句子：SVO，adv SVO或者SVO，prep SVO
练习：
1、SVO, thus SVO.
2、SVO, however SVO.
3、SVO, but SVO.
4、SVO, although SVO.
5、SVO; therefore SVO.
6、SVO; but SVO.
7、SVO; although SVO.
以上1、2均为run-on;6、7均为fragment，只有3、4、5是正确结构。
PS：易混易错易考的副词：however，consequently，therefore，thus，then，also，even，hence等是语法中常见副词，均不能直接引导两个完整句子
例10：Thecouch and chairs, in keeping with the style of the time, are characterized byelegantly curved arms and legs, they are covered in luxurious velvet.
A)NO CHANGE
B)legs, the couch and chairs
C)legs and
D)legs,
解析：梳理句子主干，A B均为run-on;D出现双谓语;故答案：C
总之：根据上面例题分析，虽然句子很长，但我们依旧可以秒杀这些题目。很多学生对于内容很长的题目，往往心存芥蒂、缺乏耐心，草草应答。笔者经验分享：往往文字越长，单词量越大，句子结构越复杂，迷惑性障碍越多的题目，其实考点越简单。
上面就是今天网小编给大家提供的旧SAT语法技巧汇编的内容，希望对大家的备考有所帮助，期待你们的进步!