一、family类名词作主语
强调整体时，谓语动词用单数
强调个体时，谓语动词用复数
如：My family is happy family.
My family are so busy getting ready for Spring Festival.
类似的词还有：class, group, band, crew, committee, audience, public, club等等
club 梅花 spade 黑桃 heart 红桃 diamond 方块
二、police类名词作主语（用复数）
如：The police are looking for the lost child.
这类名词还有：people, youth, personnel, cattle等等
三、形复义单
1. 学科：physics, mathematics, electronic, economics
如：Electronics is a piece of cake to him.
2. 疾病：mumps(腮腺炎), measles(麻疹)
3. 书名、报刊名、国家名
如：《the Great Expectations》 远大前程
《 Weekly》 时代周刊
United States
4. 运动项目：parallel bars 单杠
四、单复数同形
fish, deer, sheep, headquarters, crossroad, barracks, Chinese, species, works, means等等
如：There is a sheep on the grass.
There are three sheep on the grass.
五、度量、价值、距离、时间表示整体概念时用单数
如：One hundred years is not long.
Where is that five dollars I lent you?
六、就远原则
with, together with, along with, as well as, rather than, but, except, besides, no less than
如：The boss rather than his employees is to blame.
七、就近原则
neither…nor…, either…or…, not only…but also…
如：Neither the teacher nor the students love the novel.
Neither the students nor the teacher loves the novel.
如：To see is to believe.
The husband and wife 夫妻（单数）
The husband and the wife 一个丈夫和一个妻子（复数）
The secretary and manager 书记兼经理
The secretary and the manager 书记和经理
八、one of…., many a, one and a half, more than 后用单数
如：Many a girl likes swimming.
One and half years has passed.