OG 21&24 疑问，谢谢帮忙！

rita1209

烦请前辈们帮我翻译此段话，及以下解释用荧光笔划出的部分，谢谢！

21.   Defense attorneys have occasionally argued that their clients’ misconduct stemmed from a reaction to something ingested, but in attributing criminal or delinquent behavior to some food allergy, the perpetrators are in effect told that they are not responsible for their actions.

(A) in attributing criminal or delinquent behavior to some food allergy

(B) if criminal or delinquent behavior is attributed to an allergy to some food

(C) in attributing behavior that is criminal or delinquent to an allergy to some food

(D) if some food allergy is attributed as the cause of criminal or delinquent behavior

(E) in attributing a food allergy as the cause of criminal or delinquent behavior

In choices A, C, and E, in attributing... behavior modifies the perpetrators, producing the illogical statement that the perpetrators rather than the defense attorneys are attributing behavior to food allergies. Choice C is also wordy, and attributing... as is unidiomatic in E. In the correct form of the expression, one attributes x, an effect, to y, a cause; or, if a passive construction is used, x is attributed to y. D avoids the initial modification error by using a passive construction (in which the attributors are not identified), but attributed x as the cause of y is unidiomatic. Choice B is best.

另外，想请问以下用绿色划出的部分的翻译，谢谢！

24.   The first decision for most tenants living in a building undergoing being converted to cooperative ownership is if to sign a no-buy pledge with the other tenants.

(A) being converted to cooperative ownership is if to sign

(B) being converted to cooperative ownership is whether they should be signing

(C) being converted to cooperative ownership is whether or not they sign

(D) conversion to cooperative ownership is if to sign

(E) conversion to cooperative ownership is whether to sign

In A, B, and C, the phrase being converted is awkward and redundant, since the sense of process indicated by being has already been conveyed by undergoing. A and D can be faulted for saying if rather than whether, since the sentence poses alternative possibilities, to sign or not to sign. Only E, the best choice, idiomatically completes whether with an infinitive, to sign, that functions as a noun equivalent of decision. Choice E also uses the noun conversion, which grammatically completes the phrase begun by undergoing.

gmat700+

21、在选项A、C和E中，in attributing ……behavior修饰的是the perpetrators，这样就产生了不合逻辑的一种表达：把犯罪行为归因于食物过敏的是perpetrators，而不是defense attorneys。（原句含义说的是辩护律师把自己当事人的违法行为归咎于食物过敏反应，但是把in attributing放在but后面主句主语the perpetrators之前，就造成了in attributing 的逻辑主语成了the perpetrators，产生不合理的逻辑含义。）

24、在A、B、C选项中，短语being converted的表达罗索且不合语法习惯，因为being表达的正在进行的含义已经由undergoing表达出来了。（undergoing和being都表示了正在进行的含义，因此重复使用显得罗嗦。）

rita1209

非常感谢十分清楚的解答，我了解了！

爱维的天

请问一下，是因为undergo本身就有进行的意思，还是因为undergoing是进行式的关系.