21．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.

12、all，some，none，most，any等代词作主语时，若指复数概念，谓语动词用复数形式；若指单数概念，则谓语动词用单数形式。如：Not all work is difficult. 不是所有的工作都难。Not all the students are here. 不是所有的学生都在这儿。　　　　 13、当and连接的两个主语被each，every或no修饰时，谓语动词通常用单数形式。如：　Every teacher and every student needs dictionaries. 每个老师和每个学生都需要词典。

17．“……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.

9、当kind of, pair of, glass of等表示确定数量的名词短语修饰主语时，谓语动词应与kind，pair，glass等形式一致。如：　　　 This pair of shoes is dirty．这双鞋脏了。　　　　　　　　　　 There are two glasses of water on the table. 桌子上有两杯水。 10、由 “a lot of (lots of) ／ plenty　 of ／ a　 number of +名词”或“分数+名词”作主语时，谓语动词的形式根据名词的单复数而定。如：A lot of people have been to London.许多人去过伦敦。Three-fifths of the water is dirty. 五分之三的水是脏的。　　　 注：“the number of十复数名词”作主语时，谓语动词用单数形式。如：　The number of the students in our school is over two thousand. 我们学校的学生数超过两千

7、非谓语动词短语或从句作主语时，谓语动词常用单数形式。如：Is watching too much TV good or bad for your health? 看太多的电视对你的身体有益还是有害?　　　　　　　　　　 　What you said is wrong. 你所说的是错的。　　　　　　　　

8、以there，here, where开头的句子，若主语不只一个，其谓语动词通常和邻近的那个主语一致。如：There is a pen and some books on the desk. 课桌上有一枝钢笔和一些书。　　　　　　　　 Here are some books and paper for you. 这是给你的书和纸。　

　Here is a pen, a few envelopes and some paper for you.

6、由either，either．．．or．．．，neither．．．nor．．．，not only．．．but also．．．等词连接并列主语时，谓语动词常和最接近的主语一致。如：　　 Neither you nor Li Hua has been to Shanghai before. 你和李华以前都没去过上海。Is he or you wrong? 他错了还是你错了? Either you or he has to go there with me.

5、单数名词后跟with， along with(与……一道), together with, as well as(和；也), rather than(而不), but, except， not, like, besides, including 等引起的短语时，等引导的短语时，谓语动词用单数形式。如：　My father， together with his friends, is going to visit the Great Wall．　我父亲将和他的朋友们一起去参观长城。　 He as well as his sister is a League member.

4、people, police等集体名词作主语时，谓语动词用复数形式。如：　People here are very friendly. 这儿的人们很友好。　　　 The police are having a meeting． 警察们正在开会。

youth作“青年们”解作主语时，谓语用复数。

　 The youth of China today are doing their best to study modern science and technology.

3、family，class，team，group，crowd, committee等集体名词作主语，若指一个整体时，谓语动词用单数形式；若指具体成员时，谓语动词用复数形式。试比较：My family is a very big one，with ten people in it. 我家是一个大家庭，有十口人。　　　　　　　　　　　　 My family all like watching TV．我们全家人都喜欢看电视。

　 His family are all music lovers.