以“so...that”引导的结果状语从句可以转换成不定式的简单句，即可转换为“...enough to...”句型，但这种转换必须符合一些条件。那么这些条件都是什么呢?本文就给大家介绍一下GMAT语法enough to do/so as to 的用法说明。
GMAT语法大百科每日语法点：enough to do/so as to 的用法说明
以“so...that”引导的结果状语从句可以转换成不定式的简单句，即可转换为“...enough to...”句型，但这种转换必须符合下列条件：
1. 当主句和从句的主语一致，且that从句是肯定句时，可用“enough to do sth.”来转换。例如：
The man is so strong that he can lift the heavy box.→
He was clever enough to understand what I siad.
2. 当主句和从句的主语不一致，且that从句是肯定句时，可以用“enough for sb. to do sth.”来替换，但须注意不定式的宾语要省略。例如：
The question is so easy that I can work it out. →
The box is light enough for him to carry.
GMAT高频enough to do/so as to 用法实例讲解
Congress is debating a bill requiring certain employers provide workers with unpaid leave so as to care for sick or newborn children.
(A) provide workers with unpaid leave so as to
(B) to provide workers with unpaid leave so as to
(C) provide workers with unpaid leave in order that they
(D) to provide workers with unpaid leave so that they can
(E) provide workers with unpaid leave and
选项分析：
so as to要前后逻辑主语一致，即B选项错在care for sick or newborn children的逻辑主语是emloyers而不是workers
so as to 的主语是employers, 而D中‘they’ refers to workers...
care for sick or newborn children的主语肯定是workers.
所以其表达的意思应该是 employers给予不带薪假期以允许workers 照顾生病或新生的孩子。
所以最后答案是D
推荐练习：
In a plan to stop the erosion of East Coast beaches, the Army Corps of Engineers proposed building parallel to shore a breakwater of rocks that would rise six feet above the waterline and act as a buffer, so that it absorbs the energy of crashing waves and protecting the beaches.
(A) act as a buffer, so that it absorbs
(B) act like a buffer so as to absorb
(C) act as a buffer, absorbing
(D) acting as a buffer, absorbing
(E) acting like a buffer, absorb
(A)act as a buffer, so that it absorbs
【错误】 平行结构：。“it absorbs”和“protecting”之间有“and”，但语法功能不一致，无法平行。
(B)act like a buffer so as to absorb
【错误1】 固定搭配：“act as”意为“起到……的作用”，而“act like”意为“表现的像”，表意不合理，因此本选项误用了固定搭配。
【错误2】 平行结构：见(A)。
(C)act as a buffer, absorbing
【正确】 “act as a buffer”和“rise six feet above the waterline”用“and”平行，“absorbing”和“protecting”用“and”平行，两个平行均合理正确。
【大意】 在一项阻止东海岸水土流失的计划中，工程师部队提出构建一道岩石防波堤，这倒防波堤高处海绵6英尺并起到缓冲作用，吸收波涛的能量并保护海滩。
(D)acting as a buffer, absorbing
【错误】 平行结构： “acting”本意上和题干中的“rise”平行，但两者语法功能不一致，因此无法用“and”平行。
(E)acting like a buffer, absorb
【错误】 平行结构： 见(A)和(D)。
【最优解题思路推荐】
为了表达合理含义，“act”要和划线部分之前的“rise”平行，“absorbing”要和划线部分之后的“protecting”平行，因此只能选择(C)。
》》点击了解GMAT语法So …that V.S. so … as to be/do的用法
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