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可尝试扩展句子。越复杂的句子,分析结果越丰富。
Many people agree that a knowledge of English is a must in international trade today.
这是一个复杂句。
Many people agree that a knowledge of English is a must in international trade today.
Many people主语
agree •••谓语动词短语
that a knowledge ··· today.宾语
a knowledge of English is a must in international trade today.
这是一个宾语从句,其时态为一般现在时。
a knowledge of English主语
isbe 动词
a must in ··· trade表语(名词)
today.