一、基础回顾:动词be的本质与基本用法
1. 核心定义
动词 be(原形)是英语中最基础的系动词,意为 “是;存在”,其过去式为was/were,过去分词为been,现在分词为being。核心功能是连接主语和表语(名词、形容词、介词短语等),构成 “主系表” 结构。
2. 现在时态(am/is/are)的主谓一致(中考基础必考点)
主语人称/单复数 | 对应的be动词 | 例句(中考高频场景) |
第一人称单数(I) | am | I am a ninth-grade student.(我是一名九年级学生。) I am good at English.(我擅长英语。) |
第二人称单复数(you)/ 第一人称复数(we)/ 第三人称复数(they / 复数名词) | are | You are my best friend.(你是我最好的朋友。) We are preparing for the high school entrance exam.(我们正在备战中考。) These books are very useful.(这些书很有用。) |
第三人称单数(he/she/it/ 单数名词 / 不可数名词) | is | He is a doctor.(他是一名医生。) is cooking in the kitchen.(我妈妈正在厨房做饭。) is limited.(时间有限。) is exciting.(这个消息令人兴奋。) |
记忆口诀:我(I)用 am,你(you)用 are,is 连着他(he)、她(she)、它(it);单数名词用 is,复数名词全用 are。
二、中考高频考点精讲(重点突破)
考点 1:be 动词与名词 / 代词的搭配(选择 / 填空常考)
易错点:第三人称单数主语(如 Tom、the boy、my sister)后误用 are;复数主语(如 the students、these apples)后误用 is。
中考真题例句:
—What ______ your brother do?(2025・福建)—He is a teacher.(答案:is,主语 your brother 为第三人称单数)
These ______ my new books. I bought them yesterday.(2024・广东)(答案:are,主语 these 为复数)
考点 2:be 动词的否定形式(中考基础送分题)
规则:在am/is/are 后直接加 not,缩写形式需记牢。
原形式 | 否定形式(完整) | 否定形式(缩写) | 例句 |
am | am not | 无缩写(不可说 amn't) | I am not late for class.(我上课不迟到。) |
is | is not | isn't | He isn't interested in math.(他对数学不感兴趣。) |
are | are not | aren't | They aren't at home now.(他们现在不在家。) |
中考注意:书面语中可使用完整形式或缩写,但缩写更简洁(作文中建议合理使用);口语中缩写更常用。
考点 3:be 动词的一般疑问句及回答(交际运用高频考点)
规则:将am/is/are 提到句首,句末加问号;回答用 “Yes, 主语 + am/is/are.” 或 “No, 主语 + am/is/are+not.”
分情况详解:
主语为 I:>—Are you a student?(你是学生吗?)Yes, I am. / No, I'm not.(注意:回答中 I 后用 am,不可说 I is/are)
主语为第三人称单数:—Is she your classmate?(她是你的同学吗?)—Yes, she is. / No, she isn't.
主语为复数: those your pens?(那些是你的笔吗?)—Yes, they are. / No, they aren't.(注意:回答用 they 代替those/these)
中考真题例句:
—______ your father a worker?(2023・浙江)>—Yes, he ______.(答案:Is;is)
考点 4:be 动词的特殊疑问句(疑问词+ 一般疑问句)
常见疑问词:what(什么)、who(谁)、where(哪里)、how old(多大)、how many(多少)等。
结构:疑问词 + am/is/are + 主语 + 表语?
中考高频例句:
—Where ______ you from?(2025・山东)—I'm from China.(答案:are)
—What ______ this in English?(2024・北京)—It's a book.(答案:is)
—How old ______ your sister?(2023・四川)>—She is 12.(答案:is)
考点 5:be 动词与现在分词连用(现在进行时)
结构:主语 + am/is/are + 动词 - ing(表示正在进行的动作)
中考必考场景:描述当前动作、图片情景题、时态辨析题。
例句:
Look! They are playing basketball on the playground.(看!他们正在操场上打篮球。)
My mother is washing clothes now.(我妈妈现在正在洗衣服。)
易错点:漏加 be 动词或误用动词形式(如are play❌,应为 are playing✅)
考点 6:be 动词与过去分词连用(被动语态基础)
结构:主语 + am/is/are + 过去分词(表示 “被……”)
中考高频语境:物品的制作、动作的承受者、客观事实描述。
例句:
This bridge is built of stone.(这座桥是用石头建造的。)
The letters are sent every Monday.(这些信每周一寄出。)
注意:中考中被动语态常与一般现在时结合,需牢记 “be + 过去分词” 结构。
三、中考易错点辨析(避坑指南)
易错点 1:主谓一致混淆(最易失分)
错误:The number of students are 50.(❌)The number of students is 50.(✅,the number of 后接复数名词,谓语用单数)
错误:There are a book and two pens on the desk.(❌)正确:There is a book and two pens on the desk.(✅,there be 句型遵循 “就近原则”,靠近 be 动词的主语 a book 为单数)
易错点 2:be 动词与实义动词混用
错误:He is like playing football.(❌,like 为实义动词,需用助动词 does,应为 He likes playing football.)
错误:They are not go to school today.(❌,go 为实义动词,否定需用助动词 don't,应为 They don't go to school today.)
核心原则:一个句子中不能同时出现两个谓语动词(be 动词和实义动词原形),需用助动词(do/does)或非谓语动词(to do/doing)连接。
易错点 3:缩写形式的误用
错误:I amn't happy.(❌,am 无缩写形式,应为 I am not happy.)
错误:It isn't a dog.(✅,正确缩写);It's not a dog.(✅,也可)
注意:在否定回答中,不能缩写为 “No, I'mn't.”,必须是 “No, I'm not.”
易错点 4:there be 句型中 be 动词的选择
规则:遵循 “就近原则”,即 be 动词的单复数由靠近它的主语决定。
例句:
There is a pen and some books in the bag.(靠近 be 动词的 a pen 为单数,用 is)
There are some books and a pen in the bag.(靠近 be 动词的 some books 为复数,用 are)
中考真题:There ______ a lot of rain in this area last year.(2025・湖南)(答案:is,rain 为不可数名词)
四、中考真题演练(附答案解析)
一、单项选择
—______ you a member of the English club?(2024・江苏)—Yes, I am. I joined it last month.
A. Are B. Is C. Do D. Does
(答案:A,主语 you 用 are,一般疑问句将 are 提前)
My parents ______ teachers. They work in the same school.(2023・安徽)
A. am B. is C. are D. be
(答案:C,主语 my parents 为复数,用 are)
—What ______ the weather like today?(2025・浙江)—It's sunny.
A. am B. is C. are D. be
(答案:B,主语 the weather 为不可数名词,用 is)
Look! The girls ______ dancing in the classroom.(2024・山东)
A. am B. is C. are D. be
(答案:C,look 提示现在进行时,主语the girls 为复数,用 are dancing)
There ______ a library and three classrooms on the first floor.(2023・广东)
A. am B. is C. are D. be
(答案:B,there be 就近原则,a library 为单数,用 is)
二、用 am/is/are填空
I ______ a student. My sister ______ a doctor.
These books ______ mine. Those ______ his.
—______ your brother at home? —No, he ______ not. He ______ at school.
The music ______ very beautiful. We all like it.
They ______ playing football now.
(答案:1. am;is 2. are;are 3. Is;is;is 4. is 5. are)
三、句型转换(按要求改写句子)
He is a worker.(改为否定句)>______
These are my pencils.(改为一般疑问句并作肯定回答)__
The girl is 13 years old.(对划线部分提问)
(答案:1. He isn't a worker. / He is not a worker. 2. —Are these your pencils? —Yes, they are. 3. How old is the girl?)
五、课堂小结 & 应试技巧
牢记主谓一致核心:“单对单(is),复对复(are),I 对 am”,特殊主语(the number of、不可数名词、there be 就近原则)单独记。
否定句直接加 not,疑问句 be 动词提前,回答简洁不啰嗦(避免重复主语和表语)。
现在进行时和被动语态中,be动词是 “灵魂”,缺一不可(如 are doing、is done)。
中考遇到 be 动词考点,先判断主语单复数,再结合时态 / 句式要求选择形式,避开 “主谓不一致”“be 与实义动词混用” 两大坑。