ACT语法逻辑主语

　　ACT考试中的阅读部分也要注意相关的语法知识，才能更好的理解阅读部分的意思，ACT阅读中的形式主语和逻辑主语是什么意思很多同学都不懂，每个句子里除了谓语动词外，有时候还会有其他的非谓语动词。动作是由行为者发出的，所以动词都会有一个行为者去支配它，这种支配非谓语动词的行为者在语法里就叫做逻辑主语

　　这个语法点若用中文语法来解释，恐怕还是会云里雾里，那么我们就先用英语来解释，就是A participial phrase at the beginning of a sentence must refer to the grammatical subject. 翻译过来便是句首分词短语必须适用于语法上的主语。然后我们来看一个例子，就会比较明了了：

　　Walking slowly down the road, he saw a woman accompanied by two children.

　　从语法层面来讲，这句话的分词短语是Walking slowly down the road，主语是he，所谓分词短语适用于主语，便是分词walking的主语一定是he，不能是a woman，也不能是two children。这是语法上的定义，没有商量的余地。

　　那么为什么要这么定义呢?请大家记住一句话：所有语法都是为了交流的顺畅。从这个角度来学习语法，我们能快速从心底里认可并掌握很多语法点。以这个例句来说，我们用这个逻辑主语，便可以把一个人同时做的两件事放在一句话中写了，而且在不反复再写一次主语的情况下，也能让对方明白我的意思，这便达到了交流的便捷与流畅。

　　ACT语法高频考点—逻辑主语篇真题训练

　　1. Located in Montgomery, Alabama, Maya Lin made this work consist of a low granite disk on which the names of the dead appear along with references to landmark events of the movement.

　　A. NO CHANGE

　　B. this work consists

　　C. consisting

　　D. her work on this monument consisted

　　2. Pleasantly heavy and warm from the sun, I can still imagine the feel of the fruit.

　　A. NO CHANGE

　　B. I can still imagine the feel of the fruit, pleasantly heavy and warm from the sun.

　　C. Pleasantly, the fruit is still warm and heavy where I can feel it in my imagination

　　from the sun.

　　D. Pleasantly heavy, I can still imagine the feel of the warm fruit from the sun.

　　3. To produce enough taxol to provide for the needs of all patients, chemists estimated that they would need the drug.

　　A. NO CHANGE

　　B. Enough taxol production to provide

　　C. Producing enough taxol in providing

　　D. They wanted to produce enough taxol to provide

　　4. As founder of the Martin Luther King, Jr. Center for Nonviolent Social Change, the work continues to fulfill the goals of peace and justice.

　　A. NO CHANGE

　　B. she continues to work

　　C. the work is continuing

　　D. the ongoing work

　　5. Being inspiring and motivating himself, Gridley traveled to Virginia City, Nevada, to auction the sack of flour to its resident.

　　A. NO CHANGE

　　B. Himself being inspired and motivated,

　　C. By inspiring and motivating,

　　D. Inspired and motivated,

　　6. Cheek to cheek, the dance is performed to the relaxed two-step tempo, and the bands often play long past midnight.

　　A. NO CHANGE

　　B. Couples dance cheek to cheek to the relaxed two-step tempo,

　　C. A relaxed two-step tempo, the couples dance cheek to cheek,

　　D. Cheek to cheek, the two-step tempo relaxes dancing couples,

　　7. A brilliant professor of dentistry: he is best remembered for making it possible for generations of golfers concentrated on their swings without worrying about whether their golf balls would remain in place as they swung.

　　A. NO CHANGE

　　B. dentistry;

　　C. dentistry,

　　D. dentistry

　　8. One evening at a restaurant, a dish of stuffed mushrooms was ordered with his meal, assuming the dish would be served as an appetizer.

　　A. NO CHANGE

　　B. a dish was ordered of stuffed mushrooms

　　C. he ordered a dish of stuffed mushrooms

　　D. ordering a dish of stuffed mushrooms

　　9. In November 2002, a crew of physicians, sailors, and expedition experts, Cox headed for Neko Harbor on the Antarctic Peninsula.

　　A. NO CHANGE

　　B. a crew made up of

　　C. with a crew of

　　D. DELETE the underlined portion.

　　10.Overcome with excitement, I carefully extracted them from the seaweed before dashing down the beach to show my father.

　　A. NO CHANGE

　　B. I carefully extracted them from the seaweed overcome with excitement.

　　C. Extracting them from the seaweed, I was carefully overcome with excitement.

　　D. Overcome with excitement; the seaweed was carefully removed.

　　11. Unearthed, I didn’t expect to find several old coins.

　　A. NO CHANGE

　　B. The unearthing of several old coins but it wasn’t what I expected.

　　C. Out from under the earth, my expectation was not to find several old coins.

　　D. I didn’t expect to unearth several old coins.

　　Answer Key:

　　1-11: BBABD BCCCA D

　　总结一下，简单来说，便是逗号后的主语一定也要是逗号前短语的主语，这便是逻辑主语了。

　　希望大家看完有所收获，记住所有语法都是为了交流的顺畅，以后遇到类似题目时能快速选出，遇到类似句子时能快速把握意思，以及在自己作文中也能用出几个不同形式的逻辑主语句子。

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