请大家分析两个英语句子
1kidsneedarangeofauthenticrolemodels—asopposedtomembersoftheirclique,popstarsandvauntedathletes.2They
havetobecarefulnottocomeacrossasdisappointedintheirchild.
(这两句话里面AS各是啥意思,又各引导什么成分)
第一句话里的opposed是过去分词吗,