7.“a lot of (lots of, plenty of, a pile of, piles of, most of) + 名词”和“分数或百分数 + 名词”等作主语时，谓语动词的单复数取决于名词。如果是不可数名词，则谓语动词用单数形式；如果是可数名词复数，则谓语动词用复数形式。

A lot of vegetables help you to keep in good health.

Most of the pupils live in the school dormitories.

Lots of people have been there.

Most of the computers are bought from Beijing.

8.由“a pair (a kind, a series …) + of + 复数名词”作主语时，谓语动词用单数形式，“pairs(kinds) of + 复数名词”作主语时，谓语动词用复数形式。

A pair of scissors is is lying on the floor.

Fifteen pairs of shoes are made each day.

9.某些只有复数形式的名词（clothes, trousers, shorts, pants, shoes, gloves…作主语时，谓语动词用复数形式。 My shoes are worn out.

10.不定式或V-ing形式作主语时，谓语动词用单数形式。

Gift giving is different in different countries.

In Sweden, doing something for someone is the best gift.

二、原则

意义一致又叫概念一致，即谓语动词是单数形式还是复数形式要看主语所表达的概念。

1.集体名词作主语时，谓语动词的形式要根据主语的意思来决定。如：family(家庭，家人)，crew(全体工作人员)，crowd(人群)，company(公司，伙伴)，audience（观众），committee(团体，公众)，government（政府），group（一群人，组）。

如果表示整体概念，则谓语动词用单数形式；如果表示集体中的成员，则谓语动词用复数形式。 Although I’m Australian, my family is Jewish.

But my host family is really nice.

2.集体名词people(人们)，police(警察)，cattle(牲口,家畜)，poultry(家禽)等作主语时，谓语动词用复数形式；但clothing(衣服) ,traffic(交通), furniture(家具)等无生命的集体名词作主语时，谓语动词用单数形式。 People in China and Europe have different ideas about etiquette.

While the police were coming, Linda walked around the station and called Davy’s name.

Our warm clothing protects us against the cold.

There isn’t any traffic on the road at the moment.

3.表示度量、价格、长度的名词复数、词组作主语时，一般被看做一个整体，谓语动词常用单数形式。 Three years is a long time.

Fifty yuan was paid to Mr Green.

4.数学运算作主语时，谓语动词常用单数形式。

What is three times three? 5.

New York Times has a wide circulation.

The United States is a country in the north of America.