英语语法分析高手请进吧In presenting the results of Global 2000,the scientists of the US Goverment's most comprehensive study of the future said,"Word popuation growth,the degradation of the Earth's natural resource base and the spread of enviromental pollution collectively threaten the welfare of minkind."看大这么长的句子蒙了,找不到主谓宾定状补了麻烦大侠跟我划分下句子结构,尤其是the scientists of the US Goverment's most comprehensive study of the future said这部分怎么分析此结构?

主谓宾是 the scientists said, the future 修饰study而the US Goverment's most comprehensive study修饰the scientists

总的来说，你所给的句子很简单，就是主谓宾结构，主语和谓语就是你麻烦的那部分，'the scientists of the US Goverment's most comprehensive study of the future said“，期中"the scientists of the US Goverment's most comprehensive study of the future "是主语，said是谓语动词，主语中心词是“'the scientists ”，“of the future ”和“of the US Goverment's most comprehensive study ”是定语修饰“'the scientists "

In presenting the results of Global 2000,【the scientists of the US Goverment's (most comprehensive study of the future)】【 said】,"Word popuation growth,the degradation of the Earth's natural resour...

主语是the scientists， of the US Goverment's most comprehensive study of the future 都是修饰主语的，the scientists of the US Goverment's（who） most comprehensive study of the future这样明白了么 ，那些美国*的、主要广泛研究未来的科学家
谓语是said
宾语是整个said后面的句子。这个分句的谓语是threaten，
主语1：Word popuation growth
主语2：the degradation of the Earth's natural resource base （这个比较难理解，base不是动词，base是动词的话后面一半会有介词on）
主语3： the spread of enviromental pollution collectively
谓语threaten
宾语the welfare of minkind