Although she had signed a pledge of abstinence while being an adolescent, Frances Willard was 35 years old before she chose to become a temperance activist.
(A) while being an adolescent
(B) while in adolescence
(C) at the time of her being adolescent
(D) as being in adolescence
(E) as an adolescent
Choices A, B, and D are unidiomatic. Choice C is awkward and wordy; furthermore, the phrase at the time of her being adolescent suggests that Willard’s adolescence lasted only for a brief, finite moment rather than for an extended period of time. Choice E, idiomatic and precise, is the best answer.
这道题og给的解释过于简单了。我想问的是，像A那样用while doing……表达一个时间状语对不对？ | 
