OG－128 之迷惑

127.
In theory, international civil servants at the United Nations are prohibited
from continuing to draw salaries from their own governments; in practice,
however, some governments merely substitute living allowances for their
employees' paychecks. assigned by them to the United Nations.

(A)  for
their employees' paychecks, assigned by them

(B)  for
the paychecks of their employees who have been assigned

(C)  for
the paychecks of their employees, having been assigned

(D)
in place of their employees' paychecks, for
those of them assigned

(E)  in
place of the paychecks of their employees to have been assigned
by them

maybe it  means ambiguous.

如果用having been assigned，你不知道这个现在分词引导的结构到底是否修饰前面的中心词paychecks还是

紧靠在它前面的名词employees，thus we say it is uncertain in reference.

独立的现在分词（如本题中用逗号隔开）短语结构在句中经常做伴随情况状语，修饰主句谓语，其逻辑主语就是主句的主语，如OG11，44；或者如In C, the phrase having been assigned... is uncertain in reference, making the
sentence unclear 。C选项如果用having，是修饰employees，还是修饰governments merely substitute 呢？。所以OG说In C, the phrase having been assigned... is uncertain in reference, making the sentence unclear。OG里面题与题之间，句与句之间都可以洞察到ETS的风格。从In C, the phrase having been assigned... is uncertain in reference, making the sentence unclear 这句话，你就可以体会到，making the sentence unclear 不是用来修饰reference，而是用来修饰the phrase... is uncertain。