seem to do句子成分

seem to do句子成分

问题补充说明：seemto主谓宾分析句子成分Petroleum,consistingofcrudeoilandnaturalgas,seemstooriginatefromorganicmatterinmarinesediment.... seem to 主谓宾 分析句子成分 Petroleum,consisting of crude oil and natural gas,seems to originate from organic matter in marine sediment. 展开

主语：petroleum

系动词：seems

来自表语：tooriginatefrom.众..

定语：consistingof...（现在分词作定语修饰petroleum,相当于whichconsistsof...）

意思：

石油（包括原油和天然气）似乎是沉淀在海底的有机物变成的.