1、一致关系1. 主语和谓语的一致：单数名词、单数代词、不可数名词等做主语时谓语动词用单数形式；复数名词、复数代词做主语是谓语动词用复数。名词做主语： 集合名词做主语时，如果表示整体概念，谓语动词用单数形式，如果就其中一个成员而言，谓语动词用复数形式。Class 3 is on the second floor.Class 4 are unable to agree upon a monitor. 有些集合名词：folk, people, police, youth 等只当复数看待，谓语动词必须用复数There are many people in the meeting room. （peopl
2、e 做民族讲时用单数） 单复数同型的名词，应根据其意义来决定谓语形式 若复数是书名、片名、剧名、格言、报名、国名等形式，其谓语动词用单数形式：The United States celebrates the birth of its independence every Fourth of July. 当名词词组中心为表示质量、距离、金额、时间等复数名词时，往往可以根据意义一致的原则，把这些复数名词看做一个整体，谓语动词用单数形式：Three years has passed. 不定代词 each, every, no, neither, either 等所修饰的名词即使以 and 或逗号连接
3、多个并列主语，谓语动词仍用单数形式：No man is born wise. 如果主语有 more than one . 或 many a .构成，尽管从意义上看是复数，但它的谓语动词仍用单数形式：More than one student has been seen the film. both, a few, many, several 等限定词修饰主语时，要用复数形式：Both of these films are boring. 主谓倒装的句子，谓语动词的数应与其后的主语一致：between the two windows hangs a picture. “The 形容词或过去分词”结构当主语时，如表示一类可数的人或事物时，用复数谓语；如表示一类不可数的事物或少数分词与定冠词连用时指个别，用单数：The rich are for the plan, but the poor are against it. /The agreeable is not always the useful.
