一般现在时中be的用法微课

be动词在一般现在时中的用法
在一般现在时中，be动词用来翻译为"是"或"在"的意思。

它用于描述
主语的状态、特征或身份。

be动词根据主语的人称和数量进行变化。

1. 描述现在状态：当我们想要描述现在的状态或特征时，可以使用be 动词。

例如：
- 我是学生。

(I am a student.)
- 他们是兄弟。

(They are brothers.)
- 这个书包是红色的。

(This backpack is red.)
2. 描述习惯或常规：be动词也可以用来描述习惯或常规的动作。

例如： - 我通常是在晚上睡觉。

(I usually am asleep at night.)
- 她总是在上午锻炼。

(She is always exercising in the morning.)
- 他们每天都在一起吃晚饭。

(They are eating dinner
together every day.)
3. 表示真理或普遍事实：be动词有时用来表达普遍的真理或事实。

例如：
- 天空是蓝色的。

(The sky is blue.)
- 水是湿的。

(Water is wet.)
- 火是热的。

(Fire is hot.)
需要注意的是，be动词的形式变化包括am、is、are，取决于主语的
人称和数量。

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。

there be句型微课教学设计there be 结构一、教学目标:1．掌握There be 结构所表达的意义。

2. 掌握There be 结构的一般现在时基本句式。

3. 掌握There be 结构的回答方式。

二、重点难点 there be 句型的肯定式、否定式一般疑问句及其回答方式。

三、教学方法: 讲授法、多媒体教学四、教学过程（一）、there be构成 There be ...句型，表示的是“某地或某时有某人或某物”，其结构为There be(is，are)+某物 / 某人 + 某地 / 某时。

（二）、There be 结构的一般现在时和一般过去时各种句式。

(1)肯定式 There is a supermarket on that road. 在那条路上有一个超市。

（2）否定式 There be句型否定句式的构成和含有be动词的其它句型一样，在be后加上“not”。

例如： There isn`t a supermarket on that road. 在那条路上没有超市。

（3）一般疑问句：There be结构的一般疑问句变化只需把be动词移到句首，再在句尾加上问号即可。

例如： Is there a supermarket on that road ? 那条路上有超市吗？ Are there many people hereon vacation.?有很多人在这里度假吗？（三）、注意事项： 1. There be句型中be动词的形式要和其后的主语在人称和数上保持一致。

如果句子的主语是单数的可数名词，或是不可数名词，be动词用“is”。

例如： There is a basketball in the box. 箱子里面有一个篮球。

There is a little milk in the glass. 瓶子里面有一点牛奶。

如果句子的主语是复数名词，be动词就用“are”。

例如： There are many birds in the tree. 树上有很多小鸟。

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.。