og036,OG037,OG039，关于AS用法

而今迈步从头越

有OG SC 36解释看不懂，也搜不到相关的解释！请大家帮我看一看！

36. Bufo marinus toads, fierce predators that will eat frogs, lizards, and even small birds,

are native to South America but were introduced into Florida during the 1930's in an

attempt to control pests in the state's vast sugarcane fields.

(A)  are native to South America but were introduced into Florida during the 1930's in

an attempt to control

(B)   are native in South America but were introduced into Florida during the 1930's as

attempts to control

(C)  are natives of South America but were introduced into Florida during the 1930's in

an attempt at controlling

(D)  had been native to South America but were introduced to Florida during the 1930's as an attempt at controlling

(E)   had been natives of South America but were introduced to Florida during the 1930's as attempts at controlling

Choice A is best. The phrasing are native to correctly suggests that the toad species is indigenous to, and still exists in, South America. In B, native in is unidiomatic; in C and E, natives of illogically suggests that each toad now in Florida hails from South America. In D and E, had been inaccurately implies that the toads are no longer native, or indigenous, to South America, and introduced to Florida is unidiomatic. Both as attempts in B and E and as an attempt in D are wrong because the attempt consists not of the toads themselves, but of their introduction into the environment. The correct phrase, in an attempt, should be completed by an infinitive (here, to control), as in A.

Choice A is best. The phrasing are native to correctly suggests that the toad species is indigenous to, and still exists in, South America. In B, native in is unidiomatic; in C and E, natives of illogically suggests that each toad now in Florida hails from South America. In D and E, had been inaccurately implies that the toads are no longer native, or indigenous, to South America, and introduced to Florida is unidiomatic. Both as attempts in B and E and as an attempt in D are wrong because the attempt consists not of the toads themselves, but of their introduction into the environment. The correct phrase, in an attempt, should be completed by an infinitive (here, to control), as in A.

答案没有问题，我也觉得用in更好，但对OG上述AS的解释看不明白。

原题的主干为BM are...but were introduced into Florida as an attempt to control...

AS在这里应该是做介词，表示作为/当作的意思，解释说BM were introducted

AS在这里应该是做介词，表示作为/当作的意思，解释说BM were introducted

as an attemp不对，因为the attempt不包括BM本身，而是BM的引进。

是否AS在做此用法的时候不能用于被动语态呢？如果改为people introduced

BM as an attempt又对不对呢？另有：

OG 37. While some academicians believe that business ethics should be integrated into every business course, others say that students will take ethics seriously only if it is taught as a separate, required course.

39. For members of the seventeenth-century Ashanti nation in Africa, animal-hide shields with wooden frames were essential items of military equipment, a method to protect warriors against enemy arrows and spears.

(A)  a method to protect

(B)  as a method protecting

(C)  protecting

(D)  as a protection of

(E)   to protect

Choice C is best because the participle protecting begins a phrase that explains what the shields did. Choices A and B awkwardly use the singular word method to refer to items of military equipment rather than to the use of such items. Also, a method of protecting would be more idiomatic than a method to protect in A or a method protecting in B（a method of protecting中）. In B and D, as is incorrect; also, a protection in D has no noun for which it can logically substitute. Choice E is incomplete; used to protect would have been acceptable.

从这几道题，我有几点疑惑：

从这几道题，我有几点疑惑：

1、as 在表示“作为某种身份/角色等”的时候可以用被动语态，而在表示“作为某种目的/功能等”的时候不能够用于被动？

1、as 在表示“作为某种身份/角色等”的时候可以用被动语态，而在表示“作为某种目的/功能等”的时候不能够用于被动？

2、as做介词表示“作为目的/功能”的

2、as做介词表示“作为目的/功能”的

时候，如果放在句尾，不能用逗号和前面的句子隔开（a protection in D has no noun for which it can logically substitute.如何讲？）？而在表示“作为某种身份/角色等”或者"当某人是（某身份）"时可放在句首，用逗号和主句隔开？eg：As a child, she was sent to six different schools.

lilyzy

个人意见, 觉得两句话都对.

nosmoking

这个问题提得好啊，as的用法确实很多，很杂，我谈谈个人意见：
37, 39 其实都说了一个问题，句中as表示“作为...”“当作...”的意思，也可以说表功能、目的吧
简单形式就是 A as B ，把A当作B，B 就是A逻辑上的一个替换物，39题这段解释可以明证 a protection in D has no noun for which it can logically substitute.  
所以 BM as an attempt 为什么不对？ 因为逻辑上BM的引进才可以说被当作是一种尝试，而不是BM本身。37的解释你画红线的部分也很清楚的说明了这一点， Both as attempts in B and E and as an attempt in D are wrong because the attempt consists not of the toads themselves, but of their introduction into the environment.

另外，我觉得as没有所谓主被动问题，你举例的最后一句话 As a child, she was sent to six different schools. 我认为as不是介词作为某个角色的意思，而是连词表示when的意思，从句中省略了主谓。 还原应该是 As she was a child, she was sent to six different school. 呵呵，你不觉得这样理解起来更顺畅一些吗？

解释不当的，请各位NN继续指教！

[此贴子已经被作者于2005-1-20 8:37:44编辑过]

cicilla

（不是NN，大家讨论）我觉得考的就是as当介词“作为”讲的时候，前后两个名词应该是对称的（性质，形式等）。

As a child, she was sent to six different schools.这里的she就是一个child.

而我们不能说36中的BM就是一个attempt。同样也不能说39题中的equipment就是一个method.

这里的as和is, act as一样，当表示A is B, A acts as B的时候，A和B都应该是对称的。

nosmoking

以下是引用cicilla在2005-1-19 15:13:00的发言：

这里的as和is, act as一样，当表示A is B, A acts as B的时候，A和B都应该是对称的。

呵呵，这句话说得好， 简单易懂啊！ 补充：所谓对称应该就是逻辑上对等。

skidals

沾个光，我也弄懂这个拉

而今迈步从头越

以下是引用cicilla在2005-1-19 15:13:00的发言：

（不是NN，大家讨论）我觉得考的就是as当介词“作为”讲的时候，前后两个名词应该是对称的（性质，形式等）。

As a child, she was sent to six different schools.这里的she就是一个child.

而我们不能说36中的BM就是一个attempt。同样也不能说39题中的equipment就是一个method.

这里的as和is, act as一样，当表示A is B, A acts as B的时候，A和B都应该是对称的。

as表示作为作为某种身份或角色的时候，AB性质应该是一样的，这点我也赞同，OG中as表示此用法的挺多的：og2, og10,og 27, og 37,og 39,og 104, og 235

但是对于as表示目的或者手段的用法，还是不能很确定。OG中倒是有一题，OG 120，use A as B，这里A和B的性质是一样的。但这是不是能说明所有的都是一样的呢？

120. The Parthenon was a church from 1204 until 1456, when Athens was taken by General Mohammed the Conqueror, the Turkish sultan, who established a mosque in the building and used the Acropolis as a fortress.

(A)              who established a mosque in the building and used the Acropolis as

(B)who, establishing a mosque in the building, used the Acropolis like

(C)              who, when he had established a mosque in the building, used the Acropolis like

(D)             who had established a mosque in the building, using the Acropolis to be

(E) establishing a mosque in the building and using the Acropolis as

nosmoking

我觉得不好分表目的还是作为角色，简而言知作介词时： 逻辑上可以对等即可，也就是看合不合理。找了一点例句，下面的凑合着看吧
金山词霸例句：The kitten uses that box as a bed.

OG RC 9. Which of the following is mentioned in the passage as a disadvantage of storing artifacts in museum basements?

OG RC Passage 4 Some see it as the opposite of rationality: others view it as an excuse for capriciousness.

             Fourth, some managers use intuition as a check on the results of more rational analysis.

OG RC 38 It can be inferred from the passage that in the early 1800’s children were generally regarded by their families as individuals who...

[此贴子已经被作者于2005-1-20 9:47:02编辑过]

peajack

更清楚了，谢谢

po_po72

字典上好像没有 as an attempt的用法  只有in an attempt

所以as an attempt 根本就是错的  对不对  

大家讨论