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华慧考博-考博英语两个复杂句子的结构分析(三十八)
1. Because the alpha state tends to be relaxed, the ability to sustain it can help tense people ease their passage into sleep.
【结构分析】句子主干为：the ability can help tense people ease their passage into sleep；“to sustain it”为不定式短语充当“the ability”的后置定语；“Because the alpha state tends to be relaxed”为because引导的原因状语。
2. They say that abnormalities in this region could account for the hundreds of thousands of unexplained cardiac arrests that occur every year.
【结构分析】句子主干为：They say that…，that引导其后的部分充当say的宾语；其中“in this region”为地点状语；“that occur every year”为that引导的从句充当“the hundreds of thousands of unexplained cardiac arrests”的后置定语。
