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相似短语
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可尝试扩展句子。越复杂的句子,分析结果越丰富。
I want to know whether the thief was caught on the spot.
这是一个复杂句。
I want to know whether the thief was caught on the spot.
I主语
want {to do.}谓语动词短语
to know whether ··· spot.to do.
the thief was caught on the spot.
这是一个宾语从句,其时态为一般过去时。
the thief主语
was caught谓语动词短语(复合结构)(被动语态)
on the spot.