平行结构（1）
(形容词平行结构)
No: In the wreck the circus lost a panda and elephant.
Yes: In the wreck the circus lost a panda and an elephant.
(不定冠词的平行结构)
No: I debated whether I should give the beggar money or to offer him food.
Yes: I debated whether to give the beggar money or to offer him food.
(不定式的平行结构)
No: They would lie on the battlefield for hours and sometimes days.
Yes: They would lie on the battlefield for hours and sometimes for days.
(介词平行结构)
No: Michael’s vacuum cleaner squealed loudly, shook violently, and dust filled the air.
Yes: Michael’s vacuum cleaner squealed loudly, shook violently, and filled the air with dust.