不谦虚地说，目前语法区的现有的研究成果就已经非常可观了，哪怕是只是来看看以往的讨论，一定会有很大的收获；更况且，这块语法的热土不断孕育生产出新的牛人。我发现来这里回答问题和提问的高手真是数不胜数。当年，我的语法导师，SBBI，在这里用极其有价值的问题引导我及同仁探索真理，才使我的改错能力得以一日千里地突飞猛进。（For example, 通过他的引导，我弄明白了as well as与and在用法上的区别；明白了as when, where once的意思；明白了in that与because的区别。等等，数不胜数啊！）。现在，我们欣喜地看到yzlinlin、solome、lizaz、dreadpower、g4yLee, to name a few, 等人正在这里成长为新一代大牛。
四、做题（考试）策略
OG上说的很清楚也足够了，我抄录如下：
1. Read the entire sentence carefully. Try to understand the specific idea or relationship that the sentence should express.（逻辑意思是ETS策略的第一条啊！）
2. Since the part of the sentence that may be incorrect is underlined, concentrate on evaluating the underlined part for errors and possible corrections before reading the answer choices.（错误部分才划线，所以对划线部分格外注意。――虽然实在，但地球人都知道。）
3. Read each answer choice carefully. The first answer choice always repeats the underlined portion of the original sentence. Choose this answer if you think that the sentence is best as it stands, but only after examining all of the other choices.（要看完所有的选项――正确答案是比较出来的）
4. Try to determine how well each choice corrects whatever you consider wrong with the original sentence.（注意正确选项是如何更正原选项的错误的。）
5. Make sure that you evaluate the sentence and the choices in terms of general clarity, grammatical and idiomatic usage, economy and precision of language, and appropriateness of diction.（清晰、符合语法和习惯用法、简洁准确、措词恰当）★★★★★
6. Read the whole sentence, substituting the choice that you prefer for the underlined part. A choice may be wrong because it does not fit grammatically or structurally with the rest of the sentence. Remember that some sentences will require no corrections. The answer to such a sentence should be the first answer choice.（注意划线之外的部分。）
另外，注意OG中针对SC说的WHAT IS MEASURED
Sentence correction questions test two broad aspects of language proficiency:
1. Correct expression. A correct sentence is grammatically and structurally sound. It conforms to all the rules of standard written English (for example: non-verb agreement, noun-pronoun agreement, pronoun consistency, pronoun case, and verb tense sequence). Further, a correct sentence will not have dangling, misplaced, or improperly formed modifiers, unidiomatic or inconsistent expressions, or faults in parallel construction.★★★★★
2. Effective expression. An effective sentence expresses an idea or relationship clearly and concisely as well as grammatically. This does not mean that the choice with the fewest and simplest words is necessarily the best answer. It means that there are no superfluous words or needlessly complicated expressions in the best choice.★★★★
In addition, an effective sentence uses proper diction (Diction refers to the standard dictionary meanings of words and the appropriateness of words in context.) In evaluating the diction of a sentence, you must be able to recognize whether the words are well chosen, accurate, and suitable for the context.★★★★
最后，再看一下题目的要求：
This question tests correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard written English; that is, pay attention to grammar, choice of words, and sentence construction. Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error.★★★
五、ETS出题的两个特点
1、ETS的辩证法学习得挺好，并在语法上体现得淋漓尽致。所以不要指望用某个通则或公理就来解决问题。一定要具体问题具体分析。（所以从这个意义上说公理是有百害而无一益啊）
好比说ETS喜欢平行结构，对应的它必然给你来一个形式上不平行的正确选项（太多了，举不胜举）。最恶毒的是这个：
396. In recent years cattle breeders have increasingly used crossbreeding, in part that their steers should acquire certain characteristics and partly because crossbreeding is said to provide hybrid vigor.
(A) in part that their steers should acquire certain characteristics
(B) in part for the acquisition of certain characteristics in their steers
(C) partly because of their steers acquiring certain characteristics
(D) partly because certain characteristics should be acquired by their steers（E）
(E) partly to acquire certain characteristics in their steers
另外：
require of sb to do sth
一会儿是对的，一会儿是错的。
cost of... to
也是一会儿是对的，一会儿是错的。
比较的助动词一会儿省略，一会儿不省。
考试时，这根弦一定要绷紧啊！要掌握ETS改错的精髓，并灵活运用。
2、ETS很注重句子的逻辑意思。（好比说比较的对等性和逻辑主语）
很多题目一旦把握了这一点，30秒之内就可搞定。但如果没有把握这一点，就陷入了万劫不复的深渊之中。最有代表性的是这个：
894. Unlike other arachnids, which have their nerve cells evenly distributed along their bodies, the scorpion’s nerve cells are clustered in its head, like a mammal’s.
(A) bodies, the scorpion’s nerve cells are clustered in its head, like a mammal’s
(B) bodies, the scorpion’s head had a cluster of nerve cells, as a mammal does
(C) body, the scorpion has a cluster of nerve cells in its head, as a mammal does
(D) body, nerve cells are clustered in the scorpion’s head, like a mammal’s（C）
(E) body, a cluster of nerve cells is in the scorpion’s head, like a mammal’s
根据可比性，30秒之内肯定可以锁定正确选项就是C。但如果这层纸没有捅破，their body留给我们的选择就只有A或B了吧？
还有很多根据逻辑主语可以锁定一个选项的例子大家自己总结吧。
所以做改错一定首先要明白句子在说什么，说的逻辑意思是否合理。这一点应该摆在第一位，不能就语法来论语法呀。
