就主谓宾啊,定语从句啊这些,

主句主语：A new study from the Center for Information and Research on Civic Learning and Engagement at Tufts University（其中 from the Center for Information and Research on Civic Learning and Engagement at Tufts University 是一个介词短语作后置定语修饰 A new study.）
主句谓语：shows
主句宾语（从句）：that today's youth vote in larger numbers than previous generations,（其中,从句主语：today's youth ；从句谓语：vote；从句状语：in larger numbers than previous generations）
连词：and
并列句主语：a 2008 study from the Center for American Progress
并列句谓语：adds
并列句宾语（从句）：that increasing numbers of young voters and activists support traditionally liberal causes（其中,从句主语：increasing numbers of young voters and activists；从句谓语：support；从句宾语：traditionally liberal causes）