内容正文:
7AU1Gramamr知识清单与课时配套练习
一般现在时(动词 be 的一般现在时)知识清单详解
一、基本用法
用于谈论事实或现在的状态,动词 be 有三种形式:am、is、are。
2、 动词 be 与主语的搭配规则
语类型
动词 be 形式
示例
I(我)
am
I am a student.(我是一名学生。)
you(你 / 你们)
we(我们)
they(他们 / 她们 / 它们)
are
You are my friend.(你是我的朋友。)We are in Class 1.(我们在一班。)They are happy.(他们很开心。)
he(他)
she(她)
it(它)单数名词 / 代词
is
He is tall.(他很高。)She is a teacher.(她是一名老师。)It is a cat.(它是一只猫。)The book is new.(这本书是新的。)
三、句式结构
1. 肯定句:主语 + be + 其他.例:I am Millie.(我是米莉。)They are friendly.(他们很友好。)
2. 否定句:主语 + be + not + 其他.例:I am not late.(我没有迟到。)He is not good at sport.(他不擅长运动。)缩写:is not = isn't;are not = aren't(am not 无缩写)。
3. 一般疑问句:Be + 主语 + 其他?例:Are you happy?(你开心吗?)Is she your classmate?(她是你的同班同学吗?)
4. 肯定 / 否定回答:
◦ 肯定:Yes, 主语 + be.
◦ 否定:No, 主语 + be + not.
例:—Are they in Grade 7? —Yes, they are. / No, they aren't.
四、常用缩写
• I am = I'm
• You are = You're
• We are = We're
• They are = They're
• He is = He's
• She is = She's
• It is = It's
五、关键注意点
• 主语为单数(he/she/it 或单数名词)时用 is;主语为复数(或 you/we/they)时用 are;主语为 I 时用 am。
• 否定句通过 “be + not” 构成;疑问句将 be 动词提前至句首。
• 口语中常用缩写形式,使表达更自然简洁。
一般现在时(动词 be)配套练习
一、用 be 动词的适当形式填空
I ____ a student.
You ____ my good friend.
He ____ from China.
She ____ twelve years old.
It ____ a nice day today.
We ____ in Class 1, Grade 7.
They ____ very friendly.
My father ____ a teacher.
Your books ____ on the desk.
The cat ____ under the chair.
二、按要求改写句子(肯定句→否定句 / 一般疑问句并回答)
I am happy.
否定句:____ 一般疑问句:____ 肯定回答:;否定回答:
He is tall.
否定句:____ 一般疑问句:____ 肯定回答:;否定回答:
They are in the classroom.
否定句:____ 一般疑问句:____ 肯定回答:;否定回答:
三、选择填空
1.—____ you Mike? —Yes, I ____.
A. Am; am B. Are; are C. Are; am D. Am; are
2.—Is she your sister? —No, she ____.
A. is B. isn't C. are D. aren't
3.____ your mother a doctor?
A. Am B. Is C. Are D. Be
4. We ____ not from England. We ____ from China.
A. are; are B. is; is C. are; is D. is; are
四、根据中文提示完成句子
1.我是米莉。____ Millie.
2.你是一名新学生吗?____ ____ a new student?
3.他们不在七年级。They ____ ____ Grade 7.
4.他的猫很小。His cat ____ very small.
5.我们是好朋友。We ____ good friends.
答案
一、1. am;2. are;3. is;4. is;5. is;6. are;7. are;8. is;9. are;10. is二、11. I am not happy.;Are you happy?;Yes, I am.;No, I am not.12. He is not tall.;Is he tall?;Yes, he is.;No, he isn't.13. They are not in the classroom.;Are they in the classroom?;Yes, they are.;No, they aren't.三、14. C;15. B;16. B;17. A四、18. I'm;19. Are you;20. are not;21. is;22. are
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