四川省2015高考英语人教版一轮讲义：必修5 Unit 1（2）
Neither its cause，nor its cure was understood.
人们既不知道其起因，又不知道它的治疗方法。
neither...nor...既不……，也不……，连接句中两个相同成分。
①I neither knew nor cared what had happened to him.
我既不知道也不关心他出了什么事。
②Neither Jim nor his parents have seen the film.
＝Neither his parents nor Jim has_seen th
