摘要： 倒数第二段 While most people recover from a bout(轮) of influenza, there are large numbers of people who need hospital treatment and many who die from the disease every year. 虽然大多数人经过一轮的流感之后恢复健康.可是仍然有很多需要住院治疗和死于这种疾病的人. 这是由while引导的让步状语从句:who need hospital treatment是定语从句修饰large numbers of people,who die from the disease every year也是定语从句修饰many,他们由并列连词and连接.

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