(A) Surprising everyone
(B) To everyone's surprise
(C) What surprised everyone
(D) Everyone was surprised
答案是b但我覺得a也可以選，可能只是文意上的不通;文法錯在哪呢？
(a)不是分詞構句嗎？
過去式分詞構句是不是會讓人誤以為一個句子有兩個動詞？
以為文法錯，其實是用對的?
★Elected leader of the class, he felt happy for himself. 這句醬用對嗎？
更新1:
☆nung☆ 我記得被動過去式變分詞構句的話是把was/were去掉留下p.p
更新2:
(B)To everyone's surprise
更新3:
☆diocequeen☆ (a)可以解釋成是他出其不意嚇大家(表示大家覺得他不會當選，所以都把票投給他)，當選為班代。然而這結果出乎大家意料之外。?? 像秘密投票？選舉？？
更新4:
☆diocequeen☆ 怎麼會變他脅迫他同學
更新5:
☆diocequeen☆ 我覺得應該是He surprised (過去式)everyone ,and he was elected leader of the class =Surprising everyone, he was (elected) leader of the class. =Elected leader of the class, he surprised everyone.
更新6:
☆diocequeen☆ As要接主詞和動詞(受詞), 主詞和動詞(受詞).
更新7:
☆diocequeen☆ 之前回答(出現在所有回答者版面)~~~怎麼不見了~~~怎麼只剩一句話跑到意見了 = ="傻眼