BBC news 2010-07-30 加文本

1.He said the documents relating to battlefield incidents and intelligence gathering could also pose a threat to those Afghan nationals assisting the coalition.

参考翻译：他表示，这些与战场事件和情报搜集工作有关的文件还可能对帮助盟军的阿富汗公民造成威胁。

结构分析：这句话的主语和谓语是：He said，后面是宾语从句。宾语从句的主干是：the documents could also pose a threat.relating to battlefield incidents and intelligence gathering是现在分词作后置定语，修饰documents。assisting the coalition是现在分词作后置定语，修饰Afghan nationals。

2.At a Senate hearing, the former Superintendent responsible for running the cemetery, where the US has buried American veterans and war deaths since 1776, accepted “full responsibility”.

参考翻译：在参议院听证会上，负责运营该公墓的前负责人表示愿意承担“全部责任”。阿灵顿国家公墓自1776年以来一直用于埋葬美国老兵和战死的士兵。

结构分析：这句话的主干是：the former Superintendent accepted “full responsibility”.At a Senate hearing是地点状语。where the US has buried American veterans and war deaths since 1776是定语从句，修饰the cemetery。responsible for是形容词短语作后置定语，修饰Superintendent。

3.Health experts are warning people to stay indoors or to wear masks because pollution levels in some parts of the city have risen ten times above normal safety limits.

参考翻译：卫生专家提醒人们尽量待在室内或者戴上口罩，因为莫斯科局部地区的污染水平已经上升到安全水平的十倍以上。

结构分析：这句话的主干是：Health experts are warning people to stay indoors or to wear masks。because引导原因状语从句。ten times above normal safety limits表示倍数。