be动词的一般现在时有三种形式，即：am, is, are。
1. 如果主语是第一人称I（我）时，be动词用am。
如：I am a student. 我是一名学生。
I am 还可缩写成I'm。如：
I'm David. 我是大卫。
2. 如果主语是you （你，你们）, they （他们，它们，她们）或名词复数 （两个以上的人或物）时，be动词必须用are。
如：Are you twelve? 你是十二岁吗？
Tom and Lily are good friends. 汤姆和莉莉是好朋友。
They are at school. 他们在学校。
are与主语还可缩写。如： We are= We're， They are =They're, You are = You're。而are与 not可缩写成aren't。
如：They aren't students. 他们不是学生。但是am与not不能缩写。
3. 如果主语是单数名词、不可数名词或单数第三人称代词（he, she, it）时，be动词用is。
如:My mother is a teacher. 我的妈妈是一名老师。
He is a student. 他是一名学生。
is也可与主语缩写,如: He is = He's, My mother is = My mother's等。但是This is不可缩写。而is与not可缩写成 isn't。
如:This isn't a book. 这不是一本书。
根据以上叙述我们可以把动词的用法以口诀的形式表述出来：
我（I）是am,
你（you）是are,
剩下is留给她（she）, 他（he）, 它（it）,
两个以上都用are。
[思路分析]
be作助动词用的形式如下：
①am, is, are, was, were
②助动词+be：shall be, will be, can be, etc.
③have/has/had + been（完成时）
④am, is, …being（进行时）
[解题过程]
（1）表达进行时态
句型 be + V-ing…（进行时态）
例：What are you reading?
（你正在阅读什么？）
I am reading a magazine.
（我正在阅读杂志。）
例：He will be taking a walk in the park at this time tomorrow morning.
（明天早晨此时他将会正在公园散步。）
例：She has been teaching English in our school for years.
（她已在我们学校教英语许多年了。）
解说 第一例句是表达现在进行时，第二例句是将来进行时，第三例句是现在完成进行时。
（2）表达被动语态
句型 be +p.p. …（被动语态）
例：English is spoken in both Canada and the United States.
（加拿大和美国都讲英语。）
例：Those keys were found in your drawer.
（那些钥匙是在你的抽屉里找到的。）
例：It can be done much faster in this way.
（这件工作用这个方法可以更加快速地做好。）
英语的“be”是个特别动词；有些语言，如中文和马来文，并没有“be”这样的动词。
“Be”除了原形的“be”之外，还有另外七种形式：am, is, are, been, being, was, were.
在句子中，“be”可以是主动词(The Principal Verb)或助动词(The Auxiliary Verb).
当主动词时，“be”在性质上属于接系动词(The Linking Verb), 后面要有名词、形容词
、地方副词或短语作补足语(The Complement)。例如：
1. The man is a science teacher.
2. Mary's new dresses are colourful.
3. I have been there before.
4. Mother is in the kitchen now.
这四个都是陈述句，可以变成疑问句，方法简单，把主语和“be”或助动词对换位置即可：
5. Is the man a science teacher?
6. Are Mary's new dresses colourful?
7. Have I been there before?
8. Is mother in the kitchen now?
当“be”要在祈使句中出现时，它必须借重助动词“do”或“don't”之助，如：
9. Don't be silly!
10. Do be obedient!
11. Don't be a fool!
“Be”有两种缩写法，如下：
12. He's not...../He isn't....
13. You're not...../You aren't...
但“am + not”的缩写法只有一个：
14. I'm not.
有人用“ain't”, 但这并不是标准英语。
谈过了“be”作主动词的功能，现在看看“be”作助动词时，有些什么用法：
1.“Be + 现在分词”以组成进行式时态(Continuous Tenses)，如：
15. Tony's maid is washing his new car.
16. The children are playing in the field.
17. Samuel was eating when I came in.
18. We have been living here since 1959.
2.“Be + 过去分词”以组成被动语态(The Passive Voice),如：
19. Her money in the drawer was stolen.
20. A number of good jobs are taken up byforeigners.
21. David studied in Taiwan but has been trained as a language lecturer in America.
22. Can all the wonderful birds be found in our Bird Park?
23. The disobedient boy was told to stand out- side the classroom.
24. Steps are being taken to reduce traffic con- gestion during peak hours.
25. Dishonest students will be immediately dealt with.
从上面例子看，“be”这动词外貌平凡，但内涵丰厚。如果没有“be”，补足语的桥梁断了。如果没有“be”,何来进行式时态和被动语态？缺了这几样重要的句式，英语还像英语吗？
动词be的本领演示
动词be：我是系动词的总称，我叫be动词。今天我就要给大家演示一下我们家族中的are，is和am的本领。下面听听它们是怎么说的：
Are：凡是表示多数（复数）的人称或名词都必须跟我连用；凡是第二人称you，不管是单数还是复数，也必须来找我。例如：
How are you today？你今天怎么样？
Jenny and Mary are in Canada. 詹尼和玛莉在加拿大。
Is：虽然复数人称、第一人称和第二人称都与我无缘，但我总是和第三人称单数一起连用。例如：
My teacher is in China. 我的老师在中国。
Am：我永远只和第一人称I一
起连用，不信你瞧：I am a teacher. 我是老师。
动词be：谁能告诉我你们在句中表示什么意思？
Am：我们都表示“是”，但是当我们和介词短语或地点副词连用时，我们通常翻译为“在”；如果和形容词或数词（表年龄）连用，通常不翻译。例如：
I am in the classroom. 我在教室。
They are young /25. 他们年青/25岁。
动词be：那么什么情况下不缩写呢？
Are：我只知道我们在句中不重读时要缩写。例如：
He’s a student. 他是老师。
难道还有不缩写的时候吗？
Is：当然有，This与我is连用不缩写：
This is a chair. 不能说This’s a chair.
Am：这是因为This的尾音与is的尾音相近，缩写后不容易读出来的缘故。还有，如果我们三个在句尾时，一般不缩写，这是因为我们要重读。例如：
There it is. 它在那里。
Here you are. 给你。
动词be：最后我再考你们三道题：
Tom and I ________ teachers.
You ________ a word (单词).
Class Two ________ on the playground (在操场上).
动词be：Tom and I是两个人，是复数，用are；You在这里看作是一个单词，所以用is；Class Two表面上是一个班，但实际上是指二班的学生，所以用are。好了，希望你们认真学习，不仅仅要看表面，还要看透本质。只有这样，才能掌握更高、更深的知识。
系动词be的用法
张家港三兴小学游健英
最近，五年级的小朋友学习了系动词be的三种形式：is, am, are。在汉语里它们都表示“是”的意思，而英语里却有这么“三个小兄弟”，于是有的小朋友因为不能正确区分而愁眉不展。别急，读读下面这个简易口诀，再去做题，相信你回豁然开朗。
Is, am, are ，
通通译成“是”。
“我”是am, “你”是are，
is跟着“她”，“他”， “它”。
要想区分is 和are,
请你记住啦：
单数是is, 复数都是are。
如要提问是不是，
is, am, are 往句前提。
要想否定说不是，
not要往is, am, are的后面移。
现在，小朋友都明白了吧！那就自我检测一下吧！
请用is, am, are完成下列句子。
1. I ____ a good student.
2. You ____not a teacher.
3. _____ he a doctor?
4. Tom and Lin Tao _____ good friends.
5. The coat _____ my father’s.
、用be(is, am,are)动词的适当形式填空。
1）I ______ a boy. ______ you a boy? No, I _____ not.
2）The girl______ Jack's sister.
3）The dog _______ tall and fat.
4）The man with big eyes _______ a teacher.
5）______ your brother in the classroom?
6）How _______ your father?
1.1 Be 动词的三种形式(am, is, are) （一般
现在时态中）
I am in guangzhou now.
My father (He) in Shanghai.
My sister (She) is in Wuhan.
Guangzhou (it) a city.
We (Lucy and I ) students.
You are a teacher.
They(Guangzhou and Wuhan) cities.
练习：用am, is, are 填空。
1． The U.S._______ a big country.
2． Guangzhou _______ one of the largest province in China.
3． Guangzhou and Shanghai _______ morden cities.
4． We _______ in Guangzhou now.
5． I _______ a student in XX school.
6． Lucy and I _______ teenagers.
7． David _______ my classmate.
8． You _______ my best friend.
9． My dog _______ my best friend.
10． My mother and sister _______ at home.
1.2 Be 动词的用法。（7种用法）
1. Guangzhou is beautiful. (对主语进行描述。)
2. Guangzhou is a city. (对主语下分类。即主语是什么。)
3. Guangzhou is in the south. (主语的位置。)
4. We are from China. (主语来自于哪里。)
5. I am 16 years old. (主语的年龄。)
6. It is hot in guangzhou. (描述天气。)
7. It is 6 o’clock. (表示时间。)
练习：指出下面例子是BE动词的那种用法。
1. Beijing is in the north.
2. Beijing is the capital of China.
3. It is 5 o’clock now.
4. It is cold today.
5. Hu Jingtao is about 60 years old.
6. The teacher is from Wuhan.
1.3 Be 动词位置。
主语 Be 补语
I am from China.
China is a country.
China is big.
Chinese is my native language.
You are from Guangzhou.
It is hot in Wuhan.
1主语放在句首。作主语的为：人或物。从主语看出我们在谈论的是谁或什么。
2 Be动词am, is, are 放在主语的后面。
3最后面的都是补语。以补语结束句子。补语表明主语的：属于哪类；地点；对主语描述等。
练习：用下面的单词，组成正确的句子。并说明是BE动词的哪种用法。
例子：big/ the U.S./ is The U.S. is big. （对主语分类）
1. Is/ beautiful/ China __________________
2. Is/ Texas/ a big state __________________
3. Hot today/ it/ is __________________
4. The teacher/ from/ is/ New York. __________________
5. Years/ my brother/ is/ 25/ old. __________________
6. A big country/ America/ is __________________
7. In the classroom/ are/ the students __________________
8. The map/ on page 3/ is __________________
9. My parents/ in China/ are __________________
10. Am/ I/ a student __________________
1.4 主语与人称代词。
Beijing is big. My friend and I are in Guangzhou.
It is in the North. We are in Guangzhou.
My sisiter is a student. My cousins are in Shanghai.
She is very happy. They are in Shanghai.
My father is at work. China and Korea are countrie
s.
He is busy. They are in Asia.
You are my teacher.
Mr Gao and you are my teachers.
You are my teachers.
1主语可以是人称代词。来代替人的名字，或者物。人称代词7个：I; we; you; he, she, it, they. 三人称单数是指:he, she, it.或者一个的人，物：my father, a dog.
2 名词单数指只有一个人或物。名词复数指两个或者两个以上的人或物，复数名词以S结尾。（a dog; two dogs）主语是单数时 Be 动词用is, 主语是复数时，用are. I 后面用am. I am a student. Dogs are animals. My mother and father are teachers. 注意The United States (the U.S.) 虽然以S结尾，但表示单数。The United States is a big country.
总结：I am, we are, you are, he is, she is, it is, they are.
3 You有两种意思：你，你们。BE动词都用 are.到底是哪种意思，要看后面的名词。 You are a student.(你) You are students.（你们）
4 当主语是另外一个人和I 时。Be动词用are.并把另外一个人的名字放I之前，表示对别人的尊重。John and I are good friends.
5 主语用人称代词it来谈论时间和天气。BE动词用is. It is hot in Guangzhou. It is 6 o’clock now.
6 They 用来代替复数的人，复数的物。My friends are here. They are good to me. My books are here. They are on the floor.
练习：用正确的人称代词和Be动词填空。人称代词有：____,____,____,____,____,____,____.
例：Canada and Mexico are countries. They are in the North America.
1. Florida is a state. _______ _______ in the Southeast.
2. _______ _______ warm in Yunnan.
3. Shanghai and Beijing are big cities. _______ _______ beautiful.
4. _______ _______ a student.（指自己）
5. _______ _______ 4:30.（时间）
6. My parents are in Guangdong. _______ _______ in Guangzhou.
7. You and I are students. _______ _______ in the classroom now.
8. _______ _______ raining today.（天气）
1.6 Be动词用法一。用语描述主语。
主语 be very 形容词
New York City is very big.
People are helpful.
The weather is nice.
I am tired.
BE动词+接形容词用来描述主语。形容词没有单复数形式。New York is big. New York and Chicago are big.
练习：将下列形容词填入一下的空格中。有的空可填多个。
Clean, interesting, big, beautiful, hot, famous, rich.
1. This classroom is _______________.
2. This city is _______________.
3. This college is _______________.
4. The weather is _______________.
5. Americans are _______________.
6. The teacher is _______________.
1.7 Be动词用于定义主语。（给主语分类）
单数主语 be A or An (形容词) 单数名词
I am a student.
You are a teacher.
Guangzhou is an (interesting) city.
复数名词 be (形容词) 复数名词
Guangzhou and Shanghai are (big) cities.
We are (Chinese) students.
You are (good) teachers.
1 BE动词+名词 表示主语是什么人，物，地方。
2 如果名词是单数，前面要加上a或an. 当单数名词以元音开头的时候，用an. 元音有：a, e,i, o, u.
3 复数名词前不用a, an.
4 名词前可以加上形容词。
练习一。给下面的句子加上一个形容词。
Important; eighth, big, famous, good, common, very good.
例： January 1 is a holiday. ---January 1 is an important holiday.
1. August is a month.
2. Puerto Rico is an island.
3. Toyata is a company.
4. I’m a student.
5. Los Angels and Chicago are cities.
6. John is a name.
练习：用正确的BE动词填空。如果是单数名词，加上不定冠词a 或an. 复数名词前不要用不定冠词。
例：The U.S. is a big country.
The U.S. and Canada are big countries.
1. California ____________ big country.
2. Guangzhou and Shenzhen ____________ cities in Guangdong.
3. Puerto Rico ____________ island.
4. Puerto Rico and Cuba ____________ islands.
5. Thanksgivng ____________ American holiday.
6. Chinese and English ____________ languages.
7. China and America ____________ countries.
1.8 Be动词用来表达主语的地点或者来源。
介词 例子
On (在上面): The book is on the table. The table is on the floor.
At(大致的地方)：I am at school. My brother is at home. They are at work.
In(在里面):The students are in the classroom. The wastebasket is in the corner.
In front of(在前方)：the blackboard is in front of the students.
In back of/behind (在后方): The teacher is in back of the desk. The blackbord is behind the teacher.
Between(在…之间): The empty desk is between the two students.
Abover/over (在上面): The exit sign is over the door. The clock is above the exit sign.
Under/below(在下面): The textbook is below the desk. The exit sign is under the door.
Near/ by/ close to(在附近): The sharpener is by/ close to/ near the window.
Next to(在隔壁): The light switch is next to the door.
Far from(相隔很远): Guangzhou is far from Wuhan.
Across from(和…对门) Room 101 is across from Room 203.
In(+城市): The Tian an men square is in Beijing. The White House is in Washington, D.C.
On(+街道): The White House is on Pennsylvania Avenue.
At (+地址): The White House is at1600 Pennsylvania Avenue.
From (来自): I am from China. I am from Guangzhou.
1. 用介词来表示人，物的地点。词序是：主语+BE+介词+地点名词。
练习：用BE动词和介词，说明教室里人或物的位置。
例：My book is in my schoolbag. The students are in front of the teacher.
1. This classroom _________________________________.
2. The clock _________________________________.
3. The teacher _____
____________________________.
4. The wastbasket _________________________________.
5. The light switch _________________________________.
6. The chalkboard _________________________________.
7. I _________________________________.
8. My books _________________________________.
9. We _________________________________.
1.9 This, that, these, those
附近 较远处
单数名词 This is my school. That is my teacher.
复数名词 These are my books. Those are tall buildings.
1 this, that, these, those为指示代词，可以指代人或物。
2 this, that+is; these, those +are
练习：用指示代词填空____,_______,________,________。
例：This is the school cafeteria. →
Those are the clean dishes.
1.___________________ the strays. →
2. ___________________ today’s special. →
3. ___________________ the napkins. →
4. ___________________the forks, knives and spoons.
5. ___________________the cashier. →
6. ___________________ the vending machines.
7. ___________________ the eating area.
8. ___________________ the teachers’ section.
1.10 BE动词的否定形式
1 I am not married. 2 Peter is not at home. 3 We are not doctors.
Be动词的否定就是在其后面加上not.
2 I’m not late. English isn’t my native language. My friends aren’t here now. 缩写形式。
练习：用代词和BE动词的否定形式填空。
例：The classroom is clean and big. It isn’t dirty. It isn’t small.
1. We’re in the classroom. ___________________ in the library.
2. Today’s weekday. ___________________ Saturday.
3. I’m a student. ___________________ a teacher.
4. The students are busy. __________ lazy. __________tired.
5. You’re on time. ____________ early. ____________late.
6. My classmates and I are in an English class. ___________________ at home.
练习：讲下面的句子改成否定句。
例：My teacher is Chinese. She isn’t American.
1. Guangzhou and Shanghai are cities. (provinces.)
2. I’m from China. (the U.S.)
3. We’re in the class now. (in the library.)
4. You’re my English teacher. (my math teacher)
5. You’re American. (I)
6. January is a cold month. (July and August)
练习：根据实际情况填空。
My name is ________. I ________ from an English-speaking country. I ________ a student in Guangzhou. I ________ in my English class now. The class ________ big. My teacher ________ a man. He/She ________ very young. The classroom ________ very nice. It ________ clean. My classmates ________ all very young students. We ________ all from the same country. We ________ happy to learn English. English ________ very easy for me. It ________ a useful language.
1.11 Be 动词在Yes/No的一般疑问句中。
陈述句 Yes/No一般疑问句 简短回答
I am a student. Am I a student? Yes, you are.
You are from China. Are you from Wuhan? No, I’m not.
He is late. Is he absent? No
, he isn’t.
She is married. Is she happy? Yes, she is.
It is cold today. Is it windy? Yes, it is.
We are here. Are we late? No, you aren’t.
They are new students. Are they from Shanghai? Yes, they are.
1 在用Yes/No一般疑问句提问时，把be动词提到主语之前。句尾加问号。回答时：Yes,+人称代词+BE。No,+人称代词+BE+not. Is the teacher here today? Yes, she is. No, she isn’t.
练习：根据实际情况回答下面问题。
例：Is your book new? Yes, it is./ No, it isn’t.
1. Is Guangzhou big?
2. Is Chinese your native language?
3. Is English hard for you?
4. Are you from Shenzhen?
5. Are you a student?
6. Are these questions hard?
7. Am I a good teacher?
8. Are you a boy?
练习：用下面的单词写出一个一般疑问句。并回答。
例：school/ big. Is his school big? Yes, it is.
1. This school/ near your house.
2. This school/ near public transportation.
3. Mother/ at home.
4. This class/ free
5. The teacher/ strick.
6. The room/ clean
7. The classroom/ big.
8. You/ a new student
9. You/ from China.
10. You/ happy in Guangzhou
11. Sports/ popular in Guangzhou
12. Education/ free in Guangzhou
1.12 Wh-特殊疑问词引导的特殊疑问句。
Wh-特殊疑问词 Be 主语 Be 补语 回答
Guangzhou is a city.
Is Guangzhou in Guangdong? Yes, it is.
Where is Guangzhou?
Beijing is the capital of China.
Is Beijing in the south of China? No, it isn’t.
Where is Beijing?
特殊疑问词有：who, what, when, why, where, how.
特殊疑问词 特殊疑问句 回答
Who=人(谁) Who is your teacher? My teacher is Ms.Zhou.
What=物(什么) What is your name? My name is Linda.
What is Spring Festival? It is a holiday.
When=时间(什么时候) When is Christmas? It’s in December.
用介词in 表示年，月 It's on December 25.
用介词on 表示日，星期。 It’s on Saturday this year.
Why=原因(为什么) Why are you late? Because I got up late.
Where=地点(在哪里) Where is China? It’s in Asia.
Where are your books? They’re on the desk.
Where are you from? I’m from Guangzhou.
How=描述，身体(怎么样) How is your life in school? It’s good.
How is the weather today? It’s warm today.
How is your mother? She is fine.
Which=选择(哪个) Which book do you want? I want that book.
练习：用正确的特殊疑问词和Be动词填空
Example：What’s your name? My name is Frank.
1. __________ Guangzhou? It’s in Guangdong.
2. __________ your birthday? It’s in June.
3. __________ your teacher? My teacher is Ms.Zhou.
4. __________ a rose? A rose is a flower.
5. __________ you late? I’m late because of traffic.
6. __________ your parents? They’re in my country.
7. _______
___ you? I’m fine. And you?
8. __________the teacher’s office? It’s in the second floor.
9. __________ the restrooms? They are at the end of the hall.
10. __________ Labor Day in China? It’s in May.
11. __________we here? We are here because we want to learn English.
12. __________ the weather today? It's cloudy and cool.
1.13 What 和how的疑问句。
What 名词 Be 补语 回答
What is a rose? It is a flower.
What nationality is the teacher? She’s Chinese.
What kind of book is it? It’s an English book.
What day is today? It’s Friday.
What time is it? It’s 4 o’clock.
What color are your new shoes? They are black.
说明：what 后面可以加上名词。What time, what day, what color
How 形容词 Be 补语 回答
How is your new job? It’s great.
How is the weather today? It’s cool.
How old is your brother? He’s 16 years old.
How tall are you? I am 180cm.
How long is the ruler? It’s 10cm.
How much is the book? It’s five yuan.
说明：how后面可以接形容词和副词。How big, how old, How much
练习：用形容词或名词填空。
例：How old are your parents? They’re in their 50s.
1. What ____________ your husband? He’s Chinese.
2. What ____________ it? It’s 3 o’clock.
3. What ____________ car ____________ that? That’s a Japanese car.
4. What ____________ your new car? It’s dark blue.
5. How __________________? My son is ten years old.
6. How __________________? My brother is 6 feet tall.
7. How __________________? I’m 25 years old.
8. How __________________? That car is $10,000.
9. How __________________? The movie is 2 hours long.
练习：按照下面的例子造句。
例：I’m from Guangzhou. (where) Where are you from?
1. My name is Lucy.(what) ______________________.
2. I’m from Guangzhou. (where) ______________________.
3. The president of China is Hu Jingtao.(who) ______________________.
4. The president is about 60 years old. (How) ______________________.
5. The flag from my country is red (what color) ______________________.
6. I’m 160cm. (how tall) ______________________.
7. My birthday is in April. (when) ______________________.
8. My favorite color is green. (what) ______________________.
7）Mike and Liu Tao ______ at school.
8）Whose dress ______ this?
9）Whose socks ______ they? his.
10）Who ______ I?
11）The jeans ______ on the desk.
12）Here ______ a scarf for you.
13）Here ______ some sweaters for you.
14）The black gloves ______ for Su Yang.
15）This pair of gloves ______ for Yang Ling.
16）The two cups of milk _____ for me.
17）Some tea ______ in the glass.
18）Gao Shan's shirt _______ over there.
19）My sister's name _____
_Nancy.
20）______ David and Helen from England?
21）There ______ a girl in the room.
22）There ______ some apples on the tree.
23）_______ there any apple juice in the bottle?
24）There _______ some bread on the plate.
25）You, he and I ______ from China.
26）There _______ a boy, two girls, three men and ten women in the park.