be动词的一般现在时课件

2) have to有人称、时态和单复数上的变化，而must只有一种形式。 have to → had to I have to/she has to ex: He had to look after his sister, because his parents were not at home
yesterday. 3) 在否定形式中，“don't have to”表示“不必”,“musn't”表示“禁止” ex: You don't have to tell him this news. 你不必告诉他这个消息。 You musn't tell him this news. 你一定不要告诉他这个消息。
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提到must,就不得不讲到它和have to的对比。 1) 二者都有“必须”的意思，have to表示客观上的需要，有被迫的意为， 表示“不得不...”；must表示说话人主观上的看法，即主观上的必要。
ex: My brother is ill, so I have to call the doctor in the middle of the night. I must work hard for my future.
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5. should的用法
关于may的一般问句的回答：肯定回答为 “Yes,please./Certainly./Sure.” 否定回答为“Please don't./No, you can't/musn't.”
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might是may的过去式，用法与may类似，常用于过去时中；用在疑问 句中，还可表示委婉客气。
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3. must 1) 必须 Must I say sorry? Yes, you must./No, you needn't./No, you don't have to. You must see a doctor. 2) 猜测，“肯定，准是” She must be doing her homework now. There must be something wrong with my computer. It must have rained last night. The ground is wet.

ห้องสมุดไป่ตู้
Are there any kites in the sky?
2020/12/10
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PPT教学课件
谢谢观看
Thank You For Watching
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2020/12/10
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肯定句和否定句：
I am (not) from London. He is (not) a teacher.----- isn’t She is (not) in the dinning room. My hair is (not) long. Her eyes are (not) small.----aren’t We were (not) having lunch now.—
Were they with you this morning?
It was not cold yesterday.
Was he ill last week?
This is not Wang fang’s pencil.
Are David and Helen from England?
There is a girl in the room.
The girl is Jack’s sister.
The dog is tall and fat.
The man with big eyes is a teacher.
Is your brother in the classroom?
Where is your mother? She is at home.
weren’t He was (not) ill.---wasn’t It was (not) my bag.
2020/12/10
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be动词课件
• be动词的概述 • be动词的基本形式 • be动词的用法 • be动词的常见错误 • be动词的练习与巩固 • be动词的总结与回顾
目录
01
be动词的概述
be动词的定义
基本定义
be动词是一种常见的动词，其基 本含义是表示存在、状态或关系 。
历史来源
be动词源于古英语，是英语中最 基本的动词之一。
表示位置
表示某人或某物在哪里， 例如：My keys are in the pocket. 我的钥匙在口 袋里。
表示变化和过程
表示变化
表示某人或某物发生了变化，例如：The fruit is ripe. 水果熟了。
表示过程
表示某个过程正在进行中，例如：The movie is playing. 电影正在播放。
此外，在某些语境下，也可以使用“be going to”来表示将 来时，如：It is going to rain. (将要下雨了。)
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be动词的用法
表示存在、状态和位置
表示存在
表示某物或某人在某个地 方存在，例如：The book is on the table. 书在桌子 上。
表示状态
表示某人或某物的状态， 例如：She is hห้องสมุดไป่ตู้ppy. 她很 开心。
be动词的过去时形式
Be动词的过去时形式是“was”、 “were”。其中，“I”用“was” ，“you”用“were”， “he/she/it”用“was”。
Be动词的过去时形式用来表达过去的 状态，如：He was happy yesterday. (他昨天很开心。)
be动词的将来时形式
Be动词的将来时形式通常使用“will be”，用来表达未来的 状态，如：I will be a doctor. (我将成为一名医生。)

4is. 他no们t =不is总n’是t 很开心。 5a. r我e n是o胖t =的ar。en’t some变any 6. 我不是胖的。
He is a teacher. He is not a teacher. They are always happy. They are not always happy. I am fat. I am not fat.
例1：My mother __is____ (be) very happy every day.
一找“关键词” 二找“主语”
三“判断be”
例2：Ben _ii_ss_nn_’ot_t_ (not be) always very fat.
一找“关键词”
二找“主语”
三“判断be”
例3：_a_Ar_re_e__ (be) they often tired on school days?
解题方法：
1. 找“关键词” always, usually, often, sometimes, seldom, never
every + 时间， on+星期(s)
2. 找“主语” 3.“判断be”
有be用be I用am，you用are，单数is，复数are 变否定：先找be，be后加上not 变疑问：re， 单数is，复数are
单数
be
you
复数
is
are
二找“主语”
神反应
aIm
yaoreu
theiscat
my misother
my barorethers
hise
my paarreents
tahreey
miislk
everyisthing

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Complete the sentences. Use the proper verb forms in brackets
1. Jordan __p_la_y_s__(play) basketball. He d__o_es_n_’_t_p_l_a_y_(not play) football.
哪些词是第三人称单数（三单）？
5、不定代词someone, nobody，everyone， everything, something作主语可以看作是 第三人称单数。
Everyone is here. 大家到齐了。
6、当数字或字母作主语时，看作第三人称单数。
“6” is a lucky number. “6”是个吉利数字。 “A” is a letter . A是个字母。
No，it isn’t.
be + 主语 + 其它部分？
肯定回答：Yes，主语+be
否定回答：No，主语+be+not
注意：在回答时，主语要用相应的代词代替
2、Can you speak English ?
情态动词 主语 动词原形 其他部分
Yes，I can.
No，I can’t.
情态动词 + 主语 + 动词原形 + 其它部分？
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否定句的构成
These boys like playing football. These boys don’t（do not）like playing football.
The girl reads English every day. The girl doesn’t（does not）read English every day.

7. Tom can not walk fast because he _c_a_r_r_ie_s(carry) a heavy box.
用动词的适当形式填空
1.She ____(go) to school at eight o’clock.
2. He usually _____ up at 17:00.(get )
直接加s
Fly-flies;ห้องสมุดไป่ตู้stay-stays
• 第三节 • 特殊疑问句
• I clean the window at home on Saturdays.
• 1、对主语提问：
• Who cleans the window at home on Saturdays?
• 2、对宾语提问：
Has David got a goal?
7. We have four lessons.（否定句） We don’t have four lessons.
8. Nancy doesn’t run fast （肯定句）
Nancy runs fast. 9. My dog runs fast. 否定句：My dog doesn’t run fast.
5. Danny_s_t_u_d_ie_s__(study) English, Chinese, Maths, Science and Art at school.
6. Mike sometimes g_o__e_s_(go) to the park with his sister.
7. At eight at night, she w__a_tc_hes (watch) TV with his parents. 8. _D_o_e_s_ Mike r_e_a_d_(read) English every day?

变否定，更轻松，be后not记心中 • 1This is a backpack. • This is not a backpack • 2My favourite sport is soccer My favourite sport is not soccer • 3 Jenny is doing her homework • Jenny is not doing her homework • 4 We are going to Shanghai • We are not going to Shanghai
语法加油站
Be动词的用法
小升初题型含有Be的各种题型
❖ Be的书写及形式 ❖ 在一般现在时中，它有三种表现形式，分
别是：am, is ,are ❖ 现在进行时中，有一种表现形式,即
be+~ing ❖ 在过去时中，有两种表现形式，分别是 was（is/am的过去式） ,were（are的过去
式）
• 在以下词的后面，be要用原形 ，
译一译P39
• 你在做什么？ • What are you doing? • 我在做作业 • I am doing my homework • 她在做什么？ • What is she doing? • 她在听广播 • She is listening to the radio. • 李明的妈妈在做什么？ • What is LiMing’s mother doing?
译一译
• 珍妮和我将去公园 • Jenny and I are going to the park • 明天我将要去北京 • I am going to Beijing tomorrow • 李明将要去挂断电话 • LiMing is going to hang up the phone.

3. I’m a good student.
→I′m not a good student.
→Are you a good student? (变为一般疑问句时第一人称换为第二人称)
Yes, I am.(肯定回答不能缩写.)
No, I′m not.
4. This is my key. →This isn′t my key. →Is this your key? Yes, it is.(肯定回答不能缩写.) No, it isn′t.
例句演示：
1. You are a boy.
→You aren′t a boy.
→ Are you a boy?
Yes, I am. (肯定回答不能缩写.)
No, I′m not.
2. It is a green ruler. → It isn′t a green ruler. →Is it a green ruler? Yes, it is. No, it isn′t.
__N__o_, _I_’m__n_o_t_._________.
注：以this,that 作主语的问句，回答用Yes, it is. No, it isn′t. 而以these, those作主语的问句，回答用 Yes, they are. No, they aren′t.
Exercises: 一、用am, is, are填空。
1. I _a_m______ a student. ___A_r_e____ you a student? 2.The girl ___is______ Jack’s sister. 3.The dog __is_____ tall and fat. 4.The man ___is____ a teacher. 5.Where ___i_s____ your mother?

(2)结尾是s, x, sh, ch, o,前为辅音字母,
watches teaches goes does washes brushes
(3)动词末尾y前为辅音:将y改为i加es: study→studБайду номын сангаасes fly→flies carry→carries cry→cries
但在y前如果为元音则直接加s buys says
Mary speaks Chinese.玛丽喜欢汉语。
1. be动词的变化。
否定句：主语+ be + not +其它。 如：He is not a worker.他不是工人。
一般疑问句：Be +主语+其它。 如：
-Are you a student
-Yes. I am. / No, I'm not.
二、变一般疑问句并作肯定和否定 回答。
• 1.He wants a book. • 2. Jimmy washes hands before dinner. • 3. Lisa likes milk very much. • 4. They walk to school. • 5. Lingling and Dandan are 10 years old. • 6. I am Chinese. • 7. Ben is from America.
当主语为第三人称单数时，要用does构成一般疑 问句。如：
- Does she go to work by bike? - Yes, she does. / No, she doesn't.
三．第三人称单数的动词变化规则（只有在第 三人称为主语的肯定句中，动词才用三单式）
(1)多数动词直接加s: runs gets likes takes plays climbs

一般现在时讲解
.
1
一般现在时的定义：
• 1) 表现在的状态。
eg:I’m twelve. I have a pen. • 2)表经常性或习惯性的动作。常与every day（每
天），always（总是）,usually（通常）,often （经常）sometimes（有时）,等时间状语连用。
eg：I wake up at six O’clock every day. 3)表主语具备的性格和能力。 eg：She likes milk，but she doesn’t like apples.
.
2
4) 用于表示客观真理，客观存在，科学事实。 例如： The earth moves around the sun. 地球 绕着太阳转。
Tomorrow is Tuesday. 明天是星期二
.
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一般现在的用法： 1. 当句子主语为第三人称单数时，谓语动词
也应用其第三人称单形式，在动词后面 加“-s 或 -es”。 like → likes；have → has 2. 当句子主语为第一人称，第二人称和第三 人称复数形式时，谓语动词用原形形式。 Jack likes apples, but his sister doesn’t like apples.
• 6．He ___s_a_y_s__ (say) that Li Lei is tired.
.
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• 二、将下列句子变成否定式和疑问式：
• 1．We go to school at night.
We don’t go to school at night.
.
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动词一般现在时的肯定句式：
（1）be 动词 am

Eg: They should(应该) be right.
试比较：They are right. She speaks English.
.
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否定句的构成
主语 + 情态动词 + not + 动词原形 + 其他
can not = can’t could not = couldn’t must not = mustn’t would not = wouldn’t will not = won’t should not = shouldn’t may not = may not
Model 2. He likes reading. (writing) He doesn’t like writing.
4. His brother plays football after school. (play
basketball) His brother doesn’t play basketball.
friends.
• 6、Those chairs aren’t(not) broken. • 7、The bag isn’t(not) mine.
.
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情态动词的一般现在时
• 构成 主语 + 情态动词 + 动词原形+其他 She can speak English.
注意：情态动词后的动词一定要用原形
2. Mike_st_u_d_i_e_s_ (study) in a middle school.
3. She_t_a_k_e_s_(take) Eddie for a walk after supper.
4. He_w_a_s_h_e_s_(wash) clothes with his hands.