标题: OG-12 42 [打印本页] 作者: qingluo 时间: 2010-3-14 21:14 标题: OG-12 42 Scientists have recently discovered what could be the largest and oldest living organism on Earth, a giant fungus that is an interwoven filigree of mushrooms and rootlike tentacles spawned by a single fertilized spore some 10,000 years ago and extending for more than 30 acres in the soil of a Michigan forest. (A) extending (B) extends (C) extended (D) it extended (E) is extending Parallelism; Verb form Th e original sentence is correctly written. Th e giant fungus is described as an interwoven filigree spawned … some 10,000 years ago and extending for more than 30 acres. Th e present participle extending parallels the past participle spawned. A Correct. Th is sentence has the participles spawned and extending in a correct parallel construction. Spawned refers to something that happened in the past, while extending refers to something that continues into the present. B Extends is a present tense verb, not the participle needed for parallel structure; the ostensible parallel between extends and the distant verb is is superficial and would result in an awkward and unclear sentence. C Extended looks parallel to spawned, but this phrase would mean that the fungus extended only in the past when the fungus clearly lives on in the present. D It extended is not parallel to spawned and indicates an event completed in the past. E Is extending is the progressive form of the present tense verb, not the participle required for parallelism. 为什么B选项不平行呢？ 谢谢作者: SS2010 时间: 2010-3-15 09:59
extend 必须要用分词结构与 spawned 平行