the cat is under the table 是主系表还是主谓宾,请说明一下理由,

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主谓宾 is under 构成系表结构.

主系表，under the table 是个地点状语。告诉你在桌子底下

是主系表结构。the cat是主语，be动词是谓语。我们在分析句子成分时，因为介系词是不能单独使用的虚词（机能语），必须和它的宾语（由名词和代词担任）在一起使用，介系词和它的宾语一定是一组的，是共同构成一个句子成分，under the table在这里是一起作连系动词be后面的表语，所以这是主系表结构。希望我能帮助你解疑释惑。...

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