在英语运用当中常见的一类错误就是主谓不一致，就是我们所说的
Lack of Subject-Verb Agreement
一个动词必须和它主语的人称和数保持一致
A verb must agree with its subject in person and number.
A singular subject takes a singular verb, while a plural subject takes a plural verb.
基本上就是要遵循三大原则
语法一致、意义一致、就近原则
先从语法一致原则开始说吧
当主语是单数名词/不可数名词，谓语用单数；当主语是复数名词，谓语则用复数
下面本子给大家举个例子：
栗子NO1——Kate are twelve years old now.
（错的啦——KATE就是一个妹子，谓语要用单数哦）
应该改为：Kate is twelve years old now.
栗子NO2——There are some milk in the glass.
（又是错的啦——牛奶是液体，是不可数名词哦，所以谓语要用单数）
应该改为：There is some milk in the glass.
看起来是不是so easy, 但是实际情况中，主语都不是一个次在战斗哦，就算是一个词也是有卧虎藏龙之辈
天坑一号：错把修饰语当主语
Do not mistake the object of a reposition for the subject of a sentence. The simple subject is never within a prepositional phrase. Make sure the verb agrees with the actual subject and not with the object of a preposition.
栗子NO3——A new collection of images have been issued from the White House Photo Office.
（嗯，你没看错，这个句子又是错的，真正的主语是A new collection哦，后面的images只是说明是哪种collection）
应该修改为：A new collection of images has been issued from the White House Photo Office.
天坑二号：被表语迷得三道五道
表语用来说明主语的身份、性质、品性、特征和状态的，表语常由名词、形容词、副词、介词短语、动词的-ing、不定式、从句来充当，它常位于系动词（be, become, appear, seem,look,sound,feel,get,smell等词）之后。A predicative, also called a subject complement, is used after a link verb, renaming or describing the subject. A predictive has nothing to do with the verb in person or number. Only the subject affects the number of the linking verb.
栗子NO4——The world’s thickest book are 12.5 inches.
（看到inches好happy哦，终于出现了这么明显的复数，前面的谓语肯定也是用复数对不对，简直要被自己的聪明上天了，骚年，遗憾地告诉你，所谓的主谓一致是要看主语的，你盯着人家表语这么居心叵测干什么，回头看看主语是什么，主语是“The world’s thickest book”）
应该改为： The world’s thickest book is 12.5 inches.
天坑三号：两面三刀的集合名词
集合名词是语言学上的一个专有名词，意指一种可用来指称一群对象，而这些对象，可以是人、动物、或是一群概念等事物。集合名词由多个事物组成，例如家庭就是由多个家人组成，它的单复数是由上下文决定。
常见的集合名词有audience, board, cabinet, committee, faculty. family, group, jury, majority, minority, team等，
Collective noun are words used to define a group of objects, where objects can be people, animals, emotions, inanimate things, concepts, or other things. As a collective noun is made up of more than one thing, it can be either singular or plural, depending on context.
为了避免落坑，请记住：
1) 集合名词被当单数时是一个整体概念；
a collective noun is treated as singular when it refers to a group as a whole.
2) 集合名词被当复数时是指集体当中的各成员；
a collective noun is treated as plural when it refers to each member of a group individually.
栗子NO5——The other team does not arrive, so our team wins by default. 另外一支队伍没能抵达，所以我们队阴差阳错地胜利了。
(a team as a whole)
Our team were wearing blue shorts. 我们队（员）穿着蓝色短袖。 (each member of the team)
栗子NO6——The family posed outside the house. 他的家人在屋外摆姿势。
(each member of the family)
His family is not very well off. 他的家庭不富裕。
(the family as a whole)
本子留言
今天简单介绍了第一个原则，下期再和大家一起看看主谓一致这个磨人的小妖精的其它方面~
