[求助]OG227-so that/so

227. Judicial rules in many states require that the identities of all prosecution witnesses are made known to defendants so they can attempt to rebut the testimony, but the Constitution explicitly requires only that the defendant have the opportunity to confront an accuser in court.

(A) that the identities of all prosecution witnesses are made known to defendants so they can attempt to rebut

(B) that the identities of all prosecution witnesses be made known to defendants so that they can attempt to rebut

(C) that the defendants should know the identities of all prosecution witnesses so they can attempt a rebuttal of

(D) the identities of all prosecution witnesses should be made known to defendants so they can attempt rebutting（B）

(E) making known to defendants the identities of all prosecution witnesses so that they can attempt to rebut

In English the subjunctive mood is used to express a wish or requirement that a certain course of action be taken. Such phrasing takes the form to wish [or] require that x be y, not that x should be y or that x is y. Choice B, therefore, is best. In place of the subjunctive, A uses the indicative are and E uses an awkward gerund, making, while C and D contain the unnecessary should. A and C also omit that after so, and D omits that after require. The phrase attempt to rebut is more idiomatic than the phrases that replace it in C and D. Choices C and E awkwardly place the plural noun witnesses between the plural pronoun they and its referent, defendants

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In verbal conversation, "that" may be omitted. But ETS doesn't consider it proper. "That" is needed to start the relative (result) clause...
  - so (...) that
  - such (...) that
  - in order that
  - so ... as to (no "that", but be careful: the logical subject must be the same!)

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一、so表示因果；so that表示目的

OG171. In 1527 King Henry VIII sought to have his marriage to Queen Catherine annulled so as to marry Anne Boleyn.

(A)  so as to marry

(B)  and so could be married to

(C)  to be married to

(D)  so that he could marry

(E)   in order that he would marry

The sentence calls for an adverbial clause of purpose to explain why Henry sought the annulment. D, the best choice, does this clearly and correctly. It is introduced by an appropriate conjunction, so that, and contains a logically appropriate verb form, could marry. Awkward and imprecise, A does not specify who is to marry Anne. B substitutes an illogical coordinate predicate for the needed purpose clause; because the annulment had not yet been granted. Henry could not remarry. C lacks an appropriate conjunction, and the infinitive clause to be married to ... makes this choice awkward and unidiomatic. Although E uses an appropriate conjunction, in order that, the verb form would marry is unidiomatic and illogical (might marry would be better).

注意对B和D的解释。

D中so that 表示目的；而B中so则表示两个动词的并列。

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参考以下：

OG67. Congress is debating a bill requiring certain employers to provide workers with unpaid leave so that they can care for sick or newborn children.

大全291. Factory outlet stores, operated by manufactures, are usually located miles from downtown and regional shopping centers so that they do not compete directly with department stores in the same trading area.

大全99. Although the manager agreed to a more flexible work schedule, he said it must be posted on the bulletin board so that both management and labor will know what everyone is assigned to do.

大全133. During the 1950s, as part of their therapy, young polio victims learning to live with their disabilities were helped to practice falling, so that they could learn to fall without being hurt.

二、动作之间的层次

用so that可以表示前后两个直接相联系动作的紧密关系，而so则是并列关系，在本句中有歧义so前面有两个动词，和哪一个动词并列呢？

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参考：http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=5165

语法总结—逻辑篇(二)

（二）动词之间的逻辑关系：

动词之间的逻辑关系分为并列、伴随和目的。这三种动作关系需要在句子中根据逻辑含义的不同进行辨别。

(1) 并列关系：

是指两个以上的动作由连词连接，共同归属于同一个动作执行者。或者两个完整的主谓结构并列。并列的动作也许并不同时发生，但同等重要，不分主次，且互相独立（separate and independent action）。▲还要注意相同时态，不同时态，不同语态之间的动作的并列。

(2) 伴随关系：

则是指两个动作同时发生，但有主次之分，一般情况是主要动作作为谓语出现，而次要动作作为分词结构或动词不定式出现。伴随有三种，即伴随动作，伴随结果，伴随方式。分词结构常与表条件，时间，让步等关系的连词连用。（介词词组有时也起分词结构的伴随作用,如with/without sth）

(3)目的关系。次动作表主动作的目的，一般用动词不定式(to do sth )或 目的状语从句so that 引出。

(4)动作的逻辑层次：（这个问题连同名词、修饰语的平行逻辑层次问题都可以单独归到平行结构的逻辑层次中去探讨。）

在具体的考试中，往往是几个动作混在一起，或主动作并列或次动作并列，或主动作与次动作同时存在并列的情况，在此情况下，一定要搞清楚动作之间的层次关系。

下面是我从OG的一道例题中想到的。我自编了一个选项，它与正确项在语法上没有错误，区别就动作的逻辑层次上，大家可以体会一下.

OG185　The recent surge in the number of airplane flights has clogged the nation’s air-traffic control system, to lead to 55 percent more delays at airports, and prompts fears among some officials that safety is being compromised.

(E) leading to a 55-precent increase in delays at airports and prompting

(编) leading to a 55-precent increase in delays at airports, and prompted

在研究OG时发现，ETS总是在一些不易辨别动作层次的题里安插些诸如代词，连词以及习惯搭配等错误，用以降低题目的难度。所以很多选项是可以依靠上述几个表层的语法知识进行排除的，但如果遇到难题，就只能靠分清动作之间的逻辑关系来解决了。

写在后面：由于我现在的时间安排比较紧，以后可能没有时间比较详细地总结每一部分的内容。我想以后每天把每一个语法部分的难点和问题发到网上来，供大家选择讨论。经过这两天的实践，我觉得如果能够透彻地讨论几个比较典型的例题，可以达到举一反三的效果，提高非常快。

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最后，我总觉得：

文中出现多个动作时（复杂句中多个句子就一定会有多个动词），动作之间的连接关系（连词、形式）是很重要的，要从句子的意思来判断！

HOHO~~just FYI

按白大虾的解释——so that既可以表示原因，也可以表示目的：

1，表原因：e.g.the question of "so that" is so confusing that all of us present our opinions here.

2，表目的：在that后加了情态动词的时候。。e.g.如题。。

hehe, look at this:

so or so that in purpose clauses.  Many people insist that so must be followed by that in formal writing when used to introduce a clause giving the reason for or the purpose of an action: He stayed so that he could see the movie a second time. But since many respected writers use so for so that in formal writing, it seems best to consider the issue one of stylistic preference: The store stays open late so (or so that) people who work all day can buy groceries.

so or so that in result clauses.  It is acceptable to use either so or so that to introduce clauses that state a result or consequence: The Bay Bridge was still closed, so (or so that) the drive from San Francisco to the Berkeley campus took an hour and a half.