英语语法editorsofnewspapersandmagazizesoftengotoextremestoprovidetheirreaderswithunimportantfactsandstatistics.这句话中toextremestoprovidetheirreaderswithunimportantfactsandstatistics在句中做什么成分?不定

　　英语语法

　　editorsofnewspapersandmagazizesoftengotoextremestoprovidetheirreaderswithunimportantfactsandstatistics.这句话中toextremestoprovidetheirreaderswithunimportantfactsandstatistics在句中做什么成分?

　　不定式和动名词短语都能做哪些成分呢?....