7. Water and oil ______　 (be) liquid.　　 are

6. This kind of bike _______ (be) made in Shanghai.　　　 is

5. Maths _______　 (be) my favourite subject. What about you?　　 is

4. Class 3 ______　 (have) an English class now.　 are having

3. Light ______ (go) faster than sound.　　 goes

2. Money ________ (not mean) everything.　　 doesn’t mean

1. An elephant _______　 (be) much heavier than a horse.　 is

2．在谈到一些数学问题时，把数字看成单数。

One and two is three.

动名词和不定式做主语，谓语动词用单数形式。例如：

Talking to people from other parts of the world is a good way to learn geography. 和世界其他地方的人交谈是学习地理的好方法。

To see is to believe. 百闻不如一见。

主语从句一律看成单数，例如：

When he will go to visit Beijing has not been decided. 他什么时候去参观北京还没有决定。

Whether he will go there with us is not important. 他是否和我们一起去那不重要。

其它需要注意的：

“the+形容词”表示一类人或者事物，看成复数。

The rich don’t always feel happier than the poor. 有钱人不是总比穷人感觉更快乐。

“the +姓氏的复数形式” 表示“姓….的一家人”，看成复数。

The Chens are very friendly to me.

名词所有格(或者名词性物主代词)单独使用，表示复数意义看成复数，表示单数意义看成单数。

His father is a teacher, but Tom’s is not.

My trousers are black, while Tom’s are blue.

练习：

用所给动词的适当形式填空：

1．“分数+of+不可数名词”看成单数；“分数+of+可数名词复数”看成复数。

Nearly three-fourths of the surface of the earth is covered by water. 地球表面的近四分之三被水覆盖。

Two-thirds of the students in this college are girls. 这所学院的学生三分之二是女生。

10．如果名词(或者代词)后有with短语或as well as 开头的短语，只看该名词(或代词)的数。

Li Ming with his classmates often goes to see a film on Sundays.

关于代词，比较难于掌握的是不定代词做主语的情况，下面我把初中容易出错的做一些归纳：

all 指人时看成复数，指物时看成单数。如：

All were here yesterday, but Jim is not here now. 昨天全部人都到了，但今天吉姆没有来。

All goes well. You needn’t worry. 一切都好，你不用担心。

none代替不可数名词做主语时谓语动词用单数形式；代替可数名词做主语时谓语动词既可以用单数形式，也可以用复数形式。

None of the telephones is(are)working.

电话中没有一部不是坏的。

None of the pupils knew the answer.

学生中谁都不知道答案。

数词做主语的情况：