⒉ 由（either)...or或neither...nor等连接的主语时

由either...or；neither...nor；or；not only...but(also)...连接主语时，谓语动词陈述句中就近原则

如：Either you or Jane is to be sent to New York.要你要么简被派往纽约。

Neither you nor he has finished the experiment.

Not only the old farmer but also his family were friendly to me.

Not only his friends but also he himself is looking forward to taking part in the party.

⒊ 主语由肯定否定两部分构成谓语跟肯定部分走

如：Not you but I am to answer the question.

I,not you,am to answer the question.

单一主语的主谓一致

⒈ 名词本身自带s作主语时，谓语动词用单数

① 学科名词：physics物理；mathematics/maths 数学；economics 经济学；politics政治学；新闻news；体操Gymnastics

如：As we know,Physics is a fundamental subject in science.醒是自然科学中的一门基础学科。

Mathematics is a required course for middle school student.数学是中学生的一门必修课。

Einstein once said,"Politics is much more difficult than physics."

注意：当mathematics 表示运算时谓语动词用单数复数皆可

如：If my mathematics is/are right,the answer is 56.如果我的运算正确，答案就是56。

The television news is at 7clock in the evening every day.

Gymnastics is my sistes fav ourite sport.

② 有些名词单复数同行根据是单数概念还是复数概念判断谓语

如：means 方式方法

aircraft飞机

works 工厂

crossroads 十字路口

deer鹿

sheep羊

fish鱼

This works was build in 1982.

By far,three steelworks have been closed down in this city.

This means of transport has been tried.

All possible means have been tried.

③ 由两部分组成的物体名词作主语时，谓语动词用复数

如：chopsticks筷子

compasses圆规

glasses眼镜

gloves手套

Jeans牛仔裤