一般现在时be动词的用法 英语微课
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微课be动词的用法描述微课:be 动词的用法描述在英语学习中,be 动词是一个非常基础但又极其重要的部分。
对于初学者来说,掌握 be 动词的用法是构建英语语法体系的关键一步。
接下来,让我们一起深入了解一下 be 动词的各种用法。
首先,我们要知道 be 动词包括 am、is、are 这三种形式。
那么,什么时候用 am,什么时候用 is,什么时候用 are 呢?当主语是 I(我)的时候,我们要用 am。
比如说,“I am a student”(我是一名学生。
)这里就用了 am。
当主语是第三人称单数,也就是 he(他)、she(她)、it(它)或者是一个单数的名词时,我们要用 is。
例如,“He is a teacher”(他是一位老师。
)“She is very beautiful”(她非常漂亮。
)“It is a dog”(它是一只狗。
)“The book is interesting”(这本书很有趣。
)而当主语是第二人称 you(你,你们)或者是复数名词的时候,我们就要用 are 了。
比如,“You are my friend”(你是我的朋友。
)“They are work ers”(他们是工人。
)接下来,我们再看看 be 动词在不同时态中的变化。
在一般现在时中,我们刚刚已经说过了 am、is、are 的用法。
但在一般过去时中,be 动词就变成了 was 和 were。
当主语是第一人称 I 和第三人称单数的时候,用 was;当主语是第二人称 you 以及复数的时候,用 were。
例如,“I was at home yesterday”(昨天我在家。
)“They were happy last week”(上周他们很开心。
)在现在进行时中,be 动词要和动词的现在分词(也就是动词的 ing形式)一起使用,表示正在进行的动作。
结构是“be 动词+动词的现在分词”。
比如,“I am reading a book”(我正在读一本书。
b e动词的一般现在时用法讲解Company Document number:WTUT-WT88Y-W8BBGB-BWYTT-19998be动词的一般现在时用法讲解划词:成百上千堂有趣有益的名师公开课等着你,马上注册参与吧!be动词的一般现在时be动词是系动词的一种,表示“……是……”的意思。
现在式(The Present Forms)有am,is,are三种。
这三种动词的原形是be,所以它们称为be动词。
be动词的现在式be动词的现在式有am,is,are三种,分别接在不同人称的主语之后:be动词句型的构成肯定句:主语 + be动词(am/is/are)...否定句:主语 + be动词(am/is/are) + not...疑问句:be动词(am/is/are) + 主语...?疑问代词/疑问副词 + be动词(am/is/are) + 主语...?be动词的肯定句句型:主语 + be动词...be动词的肯定句由“主语 + be动词(am/is/are) + 表语”构成:I am a doctor.我是一名医生。
Mary is at work.玛丽在工作。
He is very brilliant.他非常聪明。
It is a nice day.今天天气晴朗。
You are my only friend.你是我惟一的朋友。
They are students.他们是学生。
be动词的否定句句型:主语 + be动词(am/is/are) + not...be动词一般现在时的否定句结构,是在be动词am,is,are之后加not:We aren't her classmates.我们不是她的同班同学。
I'm not Tom.我不是汤姆。
(I'm是I am的缩写,读作/aim/。
)It's not a cat,but a dog.这不是猫,而是狗。
Things are not always what they seem(to be).事物并不总是与表象一致。
be动词的用法规则一、be动词的基本用法二、be动词在不同时态中的用法2.1 be动词在一般现在时中的用法2.2 be动词在一般过去时中的用法2.3 be动词在一般将来时中的用法三、be动词在不同人称和数上的变化形式四、be动词在其他语境中的常见用法一、be动词的基本用法Be动词是英语中最基础、最常用的助动词之一,表示“是”或“存在”的概念。
它包括am, is, are, was, were等形式,具体选择哪个形式取决于句子主语和所使用的时态。
例如:- I am a student.- He is from Canada.- They were classmates.二、be动词在不同时态中的用法2.1 be动词在一般现在时中的用法:- 在一般现在时肯定句中,第一人称单数使用am,第三人称单数使用is,复数使用are。
例如:I am a teacher. / She is a doctor. / They are students.- 在一般现在时否定句和疑问句中,在am, is后面加not;are后面加not或直接将are提到主语前。
例如:He is not here. / Are you a student? / Is she coming?2.2 be动词在一般过去时中的用法:- 在一般过去时肯定句中,不论人称和数,都使用was来代表单数主语,使用were来代表复数主语。
例如:I was at home. / They were classmates.- 在一般过去时否定句和疑问句中,在was, were后面加not;疑问句将was, were提到主语前。
例如:She was not there. / Were they friends? / Was he talking to you?2.3 be动词在一般将来时中的用法:- 在一般将来时肯定句中,be动词与will连用,形式为will be。
be动词不同时态的用法Be 动词不同时态的用法在英语学习中,be 动词可是个非常重要的角色,它就像是句子的基石,支撑着整个句子的结构和意义。
而 be 动词的不同时态更是让很多学习者感到头疼。
今天,咱们就来好好聊聊 be 动词不同时态的用法,让您以后在英语表达中更加得心应手。
先来说说一般现在时。
在一般现在时中,be 动词有 am、is、are 三种形式。
当主语是第一人称 I 的时候,用 am;当主语是第三人称单数(比如 he、she、it 或者单个的人或物)的时候,用 is;当主语是第二人称 you 或者复数(比如 we、they 或者多个的人或物)的时候,用are。
比如说,“I am a student”(我是一名学生。
)“He is a doctor”(他是一位医生。
)“They are friends”(他们是朋友。
)接下来是一般过去时。
一般过去时中,be 动词变成了was 和were。
was 用于第一人称 I 和第三人称单数,were 用于第二人称 you 以及复数。
比如,“I was very tired yesterday”(昨天我非常累。
)“They were happy last week”(上周他们很开心。
)现在进行时中,be 动词和现在分词(动词的 ing 形式)一起构成“be +现在分词”的结构,表示正在进行的动作。
这时候 be 动词要根据主语的人称和数进行变化。
例如,“I am reading a book now”(我现在正在读一本书。
)“She is singing a song”(她正在唱歌。
)“We are playing football”(我们正在踢足球。
)过去进行时的结构是“was/were +现在分词”,用来描述过去某个时刻正在进行的动作。
“He was watching TV at eight o'clock last night”(昨晚八点他正在看电视。
一般现在时中b e动词的使用一般现在时中be动词的使用一.be动词:动词be (am, is, are)说明身份、年龄、状态等I am a teacher.I am 21 years old.I’m very healthy.二、be动词的人称变化:第一人称I,后面的动词用am;第三人称he/she/it, 后面的动词用is;第一人称复数we, 第二人称you, 第三人称复数they,后面的动词用are.三、be 动词在一般疑问句和否定句中的表达:--- Are you the student from Class Two?--- No, I’m not.--- Is he Canadian?--- No, he isn’t.--- Are they fond of pop music?--- No, they aren’t.从上面例句中可看出,动词be一般现在时的一般疑问句中把be提到句首,它的否定句式是在be后直接加not。
四、be 动词的具体使用:1.be + 形容词I’m very tired.He is handsome and smart.The vegetables are fresh.It’s hot today.The traffic is always heavy.The book is interesting.My trip to Paris is exciting.Their opinion is different from mine.She is kind enough to help me out.My room is rather small.The stories in the book are scary.Sue and Sam are friendly to me.2. be + 名词They are my close friends.She is a nice girl.They are baseball players.That’s a good idea.Moscow is a busy city.They aren’t my notebooks.I am a patient teacher.Cindy is a housewife.Jake is an engineer.Both of her parents are scientists.3. be + 介词短语The flowers are in the vase.She is at home now.Are they from Russia?The teacher and the students are in the classroom.Mark is in front of the room.4. be + 形容词短语My holiday is long enough.They are tired and hot.5. be +副词The game is over.I’m home.They are abroad.What’s up?Time is up.She will be around here.6. 用于表示时间:Today is Sunday.The next match will be at 7.The following holiday is National Day.The business hour is from 9 a.m. to 6 p.m.7. 用于现在进行时:Peter is running in the heavy rain.We are leaving here next Monday.I’m coming to see you.They are taking notes in class.练习:一、阅读下面短文并回答问题:Robert BrownRobert Brown is a student. He is from Italy. He is 21 years old. He studies English every day. Peter is his teacher. Peter is a good teacher. He is kind and patient. Robert and Peter are in the classroom now. They are busy. Peter is at the board. Robert is at his desk. Robert likes his classroom. It is a small room. It is clean and pleasant. The classroom is in a large building.(一)用完整句子回答问题:e.g. —Is Robert a student? —No, he isn’t a student.1. Is Peter a good teacher?2. Are Robert and Peter in the classroom now?3. Are they busy?4. Is Robert at the board?5. Is Peter near the window?6. Is the classroom in a small building?7. Is it a small room?8. Where is Robert from?9. How old is Robert?10. Where are Robert and Peter now?(二)用动词is和are填空:Robert Brown _________ a student. He is from Italy. He________ 21 years old. He studies English every day. Peter __________ his teacher. Peter ________ a good teacher. He __________ kind and patient. Robert and Peter ___________ in the classroom now. They___________ busy. Peter _____________ at the board. Robert __________ at his desk. Robert likes his classroom. It ________ a small room. It __________ clean and pleasant. The classroom _____________ in a large building.二、用动词am, is, are完成下列句子:1. Jenny ___________ a good-looking girl.2. My friends ___________ in the library now.3. Pairs ___________ beautiful at night.4. Her hometown ____________ a small village.5. _______ you from Italy?6. They __________ interested in history.7. The Summer Camp _______ exciting.8. ____________ Judy at home?9. Tony’s parents _____________ patient and thoughtful.10. The car ___________in the garage now.11. My mother and I ____________ fond of light music.12. My neighbors ___________ kind to me.13. Math __________ difficult for me to learn well.14. Those chairs ________ not comfortable.15. She __________ shy and silent.16. The bookstore and the cinema ________ on the left.17. Class ___________ over.18. The leaves __________ brown in autumn.19. His hobby _________ playing tennis.20. They ________ twin sisters.21. The dictionary ________ English-English dictionary.22. Her job _______to clean the floor.23. His hair __________ curly and fair24. The Canadian teachers __________ in the meeting hall.25. They __________ different pictures.26. The air in the room ______ clean.27. I________ never late for class.28. The dining hall ___________next to the school gate.29. Her speech __________ successful.30. The trip ___________ safe and interesting.。