1.由 many a 或 more than + 单数名词作主语时，其谓语用单数形式。

　　Many a foreigner has been to the Great Wall.

　　More than one student has visited the exhibition.

　　2.“……的几分之几”和“……的百分之几” 作主语时，其谓语用单数或复数取决于 of 后的名词。

　　Three-fourths of the surface of the earth is sea.

　　40 percent of the students in our class are girls.

　　3.“a number of + 名词复数”作主语，谓语用复数;“ the number of + 名词复数”作主语，谓语用单数。

　　A number of pupils like reading picture-books.

　　The number of the students in our class is 55.转自环 球 网 校edu24ol.com

　　4.并列主语如果指的是同一人、同一物或同一概念，谓语动词用单数，这时 and 后面的名词前没有冠词。

　　The secretary of the Party branch and director of that factory often works with the workers.

　　5.成对的名词，如bread and butter涂黄油的面包，soda and water汽水，coffee and milk加牛奶的咖啡，aim and end目的，salt and water盐开水等，虽然有and连接，但仍表单一概念，作主语时，谓语用单数。

　　A knife and fork is on the table.

　　6.由 and 连接的并列单数主语的前面分别有each, every或no修饰时，其谓语用单数形式。

　　No student and no teacher is invited to the party.

　　In our country every boy and every girl has right to receive education.

　　7.主语是单数，其后跟有together with, along with (与……一道)，as well as (和;也)， no less than (和……一样)，rather than (而不)，以及with, not, like, but, except, besides, including 等引起的短语时，谓语动词一般用单数形式。

　　He as well as his sister is a League member.转自环 球 网 校edu24ol.com

　　8.在定语从句中主语是关系代词who, that, which,谓语动词的数应与先行词的数一致。

　　I, who am your teacher, will teach you everything I know.

　　9.主语是一些只有复数形式的名词，如clothes, trousers, glasses, compasses, scissors, shoes, socks, gloves等时，谓语用复数。但这类表示成双的东西的名词前有a pair of修饰时，谓语用单数。

　　My trousers are being washed now.

　　There is a pair of shoes in the box.

　　10.表示度量、价格、时间的复数名词词组作主语时一般被看作一个整体，谓语用单数形式。

　　Ten dollars is not enough.

　　Three months has passed since he left.

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