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1.主谓一致的概念

所谓主谓一致是指“主语和谓语动词”之间,即主语的人称和单复数形式决定着谓语动词对应的形式。

2.主谓一致的种类

2.1 语法一致

<and连接>两个或两个以上单数名词或者代词作主语的时候,谓语动词有以下两种情况：

（1） 如果指两个或两个以上不同的人或事物的时候,谓语动词用复数。

He and she are both students of this school.

他和她都是这个学校的学生。

（2）如果连接两个以上的名词指的是同一个人或物, 或者指同一概念的时候, 谓语要用单数。

The singer and dancer is going to give us a performance.

那个歌唱家兼舞蹈演员要给我们表演。

如果主语是<不定式, 动词ing形式或主语从句>的时候,谓语动词一般用单数。

When he is coming seems very important.

他什么时候要来看起来很重要。

Collecting stamps is his hobby.

收集邮票是他的爱好。

定语从句的<关系代词who, which, that>在从句中作主语时，要与<先行词>的人称和数保持一致。

Tom, who is your friend, should help you.

汤姆，你的朋友，应该帮助你。

with, along with, together with, as well as, besides, like, without, except, but, including 如果句子中有这些连接词和主语连用,谓语动词的数<随主语的变化>而变化。

例如：

　The teacher, together with his students, is planting trees in the street.

老师和他的学生们正在街道上植树。

2.2 意义一致

指主谓一致取决于主语的其实际意义。（有的主语名词在形式上是单数, 但在意义上却是复数；有的主语名词在形式上是复数, 但在意义上却是单数。）

2.3 就近原则

3.优选试题

1.The manager or his assistant __ going to attend the meeting.

A. were B. are C. is D. has

2. Two weeks __ enough for us to finish the task.

A.has B. are C.is D.were

3. Her politics __ neither conservative nor liberal.

A.are B. has been C. was D. is

4.A round and a square table __ in the shop window.

A. was exhibiting B. was exhibited C. were exhibiting D.were exhibited 

5.When he got to the fair, what were left behind __ ten empty bottles.

A. was B. were C.just D.only

6.There is always a possibility that the infection will return, but so far there __ been no signs of trouble.

A. has B.have C.are D. had

7. George is the only one of the brightest students who __ from New York University. 

A.is graduated B.have graduated C.has graduated D. are graduated 

8. Hard work and plain living _ characteristics of the working class. 

A. were B. is C. has been D.are

9.Although the first part of the book is easy, the rest __ .

A. are difficult B. has proved difficult C. is supposed difficult D. have been found difficult

10. Every policeman and fireman __ on the alert. 

A. was B. were C. have been D. are