og 171& so as to 和so that的区别

171. 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

看了解释以后好像有点头绪，想问一下so as to 和so that 在用法上有区别么（除了后面接动词和句子的区别）。好像有一个主语的问题……

88.   The Emperor Augustus, it appears, commissioned an idealized sculpture portrait, the features of which are so unrealistic as to constitute what one scholar calls an “artificial face.”

(A) so unrealistic as to constitute

(B) so unrealistic they constituted

(C) so unrealistic that they have constituted

(D) unrealistic enough so that they constitute

(E) unrealistic enough so as to constitute

再贴一个，题目没问题。还是想问一下so as to 和 so that 的区别，比如说这句话改成so that 应改怎么说阿？

谢谢大家了：）

用so as to 时，后面的逻辑主语只能是主句的主语。用so than时，后面的逻辑主语则没这个限制。

open to discussion.

另外,感觉如果有某些情态动词的只能用so that.. 而不能用 so as to, 因为 so as to 不能正确表达句子的原意. agree?

如: He took lots of  bottles so that he might use them in future.

而不能改成 He took lots of bottles so as to use them in future.

大全889 (885-S8-14)
14.   Unlike a hurricane, which can be observed from within, a tornado is so small that such a study has not been practical.

(A) that such a study has not been practical

(B) that studying it that way has not been impractical

(C) for such studies as this to have been impractical

(D) as to not make such a study practical（A）

(E) as to be impractical of study
这题又不明白了，为什么A 不选E？

用so as to 时，后面的逻辑主语只能是主句的主语。

E意思不对了。

嗯，对啊！再次谢谢jnlvo.