seemto主谓宾分析句子成分Petroleum,consistingofcrudeoilandnaturalgas,seemstooriginatefromorganicmatterinmarinesediment.
<p>问题：seemto主谓宾分析句子成分Petroleum,consistingofcrudeoilandnaturalgas,seemstooriginatefromorganicmatterinmarinesediment.<p>答案：↓↓↓<p class="nav-title mt10" style="border-top:1px solid #ccc;padding-top: 10px;">杜友田的回答：<div class="content-b">网友采纳 主语：petroleum 系动词：seems 表语：tooriginatefrom... 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.
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