I. 主语和谓语保持人称和数的一致
There is a desk in the room.
John gets up at six o'clock every morning
II. 两个名词由and连接作主语时，谓语动词一般用复数
1. My brother and I have both seen the film
2. 当and不表示并列意义，连接两个在意义上表示同一个人，物时用单数
One more knife and fork is needed 还需要一副刀叉
War and peace is a constant theme in history 战争与和平是历史永恒的主题
3. each，every，many a 等修饰时，一般用单数
Many a boy and (many a) girl has made the same mistake 许多男孩女孩都犯了同样的错误
III. 集体名词group，class，family，army等作主语时
强调集体
用单数
This group is having a meeting
强调个体
用复数
The faimily are sitting at the breakfast table（指家庭成员）
IV. 不定代词作主语
1. either,each,somebody,everything等
2. both,few,many,several等
4. neither/none (of)
指代或修饰复数可数名词
单/复数
None of them has/have arrived yet
指代或修饰不可数名词
单数
None of this money is mine
Neither statement was true 两个陈述都不真实
V. 并列成分作主语
2. 由either...or...,neither...nor...,or,not only...but also...,not...but...连接时
就近原则
Either you or Jane is to be sent to New Zealand
Not only his family but also he likes movies
VI. 由there/here引导的句子，主语不止一个名词时，谓语动词与邻近名词或代词保持一致
Here are some envelops and paper for you
VII. 主语后面接主语的修饰语，with， along with，together with，as well as，like，rather than，but，except，besides，including 等，谓语动词与主语一致
The teacher with two students was at the meeting
The girl as well as the boys has learned to drive a car
VIII. 表示时间，金钱，距离，体积等的名词短语，谓语动词用单数
Five minutes isn't enough to finish this test
IX. 定语从句中关系代词作主语，谓语动词与先行词一致
Mr.Smith,who is now downstairs,wants to see you
