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九、主谓一致 主谓一致，即谓语动词在人称和数上必须和主语一致。下面就中学英语所涉及的内容作些介绍。 情况 例句 常 用 单 数 当主语是不可数名词、可数名词单数、单数代词、不定式(短语)、动名词(短语)或从句等时谓语动词用单数 The work is important. To serve the country is our duty. 代词each以及由every、some、no、any等构成的复合代词作主语，或主语中含有each、every时谓语动词用单数 Each of the students is working hard at his or her lessons，hoping to go to university. Each girl and each boy in our class likes sports. 情况 例句 常 用 单 数 表示金钱、时间、价格或度量衡的复数名词作主语时，通常把这些名词看作一个整体，谓语动词用单数 Ten years is a moment in history. Three weeks was allowed for making the necessary preparations. Ten thousand dollars is a large sum. 以ics结尾表学科的复形名词作主语时，谓语动词常用单数 Mathematics is my favorite. Politics is often a topic for discussion among us. 在这样一些短语，如“many a，more than one”所修饰的词作主语时，谓语动词多用单数形式。 | 
