be动词的三种形式是is、am、are。
1、is，英音：[iz] 美音：[ɪz]，用于第三人称单数现在时。
例句：Mr. Smith is a very good English teacher.史密斯先生是个很好的英语教师。
2、am，为不及物动词，系动词。
例句：I am a teacher and they are my students.我是老师，他们是我的学生。
3、are，是。
例句：There are a lot of tourists there.那里有许多观光客。
扩展资料
相关句型
1、分句的谓语动词是现在一般时或现在进行时，be的形式通常用现在一般时。
It's English we like best.这就是我们最喜欢的英语。
2、分句的谓语动词是过去一般时或过去进行时，be的形式通常用过去一般时。
It was the English book that I bought last week.这是上周我买的那本英语书。
3、分句的谓语动词是现在完成时或过去完成时，be的形式通常也用现在完成时或过去完成时。
It has been John who has broken his left leg.是John弄伤了他的左腿。
参考资料来源：百度百科-is（英语单词）
参考资料来源：百度百科-am（英语单词）
参考资料来源：百度百科-be（英语单词）
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第1个回答 2016-08-13
be动词的三种形式是am、is、are、
am 英[əm] 美[æm]
abbr. (=amplitude modulation) <无>调频，调谐;
vi. （用于第一人称单数现在时） 是;
aux. （与v-ing连用构成现在进行时，与v-ed连用构成被动语态） ;
[例句]Anyway I am not coming.
横竖我不来了。
is 英[ɪz] 美[ɪz]
vt. 是（be的三单形式）;
n. 存在;
[例句]This man is an animal, a beast.
这人是个畜生，是个野兽。
are 英[ɑ:(r)] 美[ɑ:r]
vi. （用于第二人称单复数现在时，第一、三人称复数现在时） 是;
n. 公亩（等于100平方米）;
[例句]Jim and I are getting married.
我和吉姆就要结婚了。
am 英[əm] 美[æm]
abbr. (=amplitude modulation) <无>调频，调谐;
vi. （用于第一人称单数现在时） 是;
aux. （与v-ing连用构成现在进行时，与v-ed连用构成被动语态） ;
[例句]Anyway I am not coming.
横竖我不来了。
is 英[ɪz] 美[ɪz]
vt. 是（be的三单形式）;
n. 存在;
[例句]This man is an animal, a beast.
这人是个畜生，是个野兽。
are 英[ɑ:(r)] 美[ɑ:r]
vi. （用于第二人称单复数现在时，第一、三人称复数现在时） 是;
n. 公亩（等于100平方米）;
[例句]Jim and I are getting married.
我和吉姆就要结婚了。
第2个回答 2016-08-04
小学只有
1.am.
2.is.
3.are
I am a student 我是一个学生
she is beautiful. 她很漂亮
they are students 他们是学生
be动词的口诀
我用am，你用are，is连着他，她，它。
单数名词用is，复数名词全用are。
变疑问，往前提，句末问号莫丢弃。
变否定，更容易，be后not莫忘记。
疑问否定任你变，句首大写莫迟疑。
be动词的用法
be是一个多功能动词，在初级英语里可见四种用法：
功能一，系动词be
be为连系动词，中心词义是"是"，句型为"主＋系＋表"结构。
be的形式常用am, is, are(现在式)；was, were(过去式)；will/can/may/must be(助动词/情态动词＋原形)；have/has/had been(助动词＋过去分词)等。如：
To help animals is helping people.(一般现在时)
The twins were very busy yesterday.(一般过去时)
It will be sunny tomorrow.(一般将来时)
She has been ill for over a week.(现在完成时)
功能二，助动词be
助动词be，无词义，辅助主要动词一起在句中作谓语动词。用法如下：
1. be+doing：构成进行时态，有现在和过去两种进行时态。如：
The girls is reading and copying the new words now.
Young Tom was always asking questions and trying out new ideas.
2. be+done：构成被动语态(主语是动作的承受者，done必须是及物动词)。如：
Tea is grown in my hometown.(一般现在时的被动语态)
This building was built three years ago.(一般过去时的被动语态)
Our classroom has been cleaned and tidied already.(现在完成时的被动语态)
How could this kind of cakes be made in your home?(含情态动词的被动语态)
That is a day never to be forgotten.(动词不定式的被动语态)
3. be+going to do，表示"打算或将要做某事"，be有现在和过去两种形式。如：
We are going to plant trees in the park.
I didn't know if she was going to come here.
4. be+to do，表示"按计划安排将要做某事"。如：
The new shop is not to be opened till next Monday.
One night an angel came to Mary and told her that she was to have this special boy.
功能三，there be
there be句式为：there be+主语部分＋状语部分，表示"某处存在某物"，be常用现在时，过去时和将来时等。如：
Oh, cool! And there are many things to see. There is even a deer park in Sanya.
There are about 80 pyramids in Egypt.
Will there be a football match in your school next week?
功能四，实义be
可以将be视为实义动词，因为它具有实际的词义，如"成为;做;发生;举行;逗留;到达"等。如：
His daughter wants to be a doctor for animals in her twenties.
Kate's birthday party will be at half past six this evening.
Jim has been in China for more than two years, but he has not yet been to Yichang.
1.am.
2.is.
3.are
I am a student 我是一个学生
she is beautiful. 她很漂亮
they are students 他们是学生
be动词的口诀
我用am，你用are，is连着他，她，它。
单数名词用is，复数名词全用are。
变疑问，往前提，句末问号莫丢弃。
变否定，更容易，be后not莫忘记。
疑问否定任你变，句首大写莫迟疑。
be动词的用法
be是一个多功能动词，在初级英语里可见四种用法：
功能一，系动词be
be为连系动词，中心词义是"是"，句型为"主＋系＋表"结构。
be的形式常用am, is, are(现在式)；was, were(过去式)；will/can/may/must be(助动词/情态动词＋原形)；have/has/had been(助动词＋过去分词)等。如：
To help animals is helping people.(一般现在时)
The twins were very busy yesterday.(一般过去时)
It will be sunny tomorrow.(一般将来时)
She has been ill for over a week.(现在完成时)
功能二，助动词be
助动词be，无词义，辅助主要动词一起在句中作谓语动词。用法如下：
1. be+doing：构成进行时态，有现在和过去两种进行时态。如：
The girls is reading and copying the new words now.
Young Tom was always asking questions and trying out new ideas.
2. be+done：构成被动语态(主语是动作的承受者，done必须是及物动词)。如：
Tea is grown in my hometown.(一般现在时的被动语态)
This building was built three years ago.(一般过去时的被动语态)
Our classroom has been cleaned and tidied already.(现在完成时的被动语态)
How could this kind of cakes be made in your home?(含情态动词的被动语态)
That is a day never to be forgotten.(动词不定式的被动语态)
3. be+going to do，表示"打算或将要做某事"，be有现在和过去两种形式。如：
We are going to plant trees in the park.
I didn't know if she was going to come here.
4. be+to do，表示"按计划安排将要做某事"。如：
The new shop is not to be opened till next Monday.
One night an angel came to Mary and told her that she was to have this special boy.
功能三，there be
there be句式为：there be+主语部分＋状语部分，表示"某处存在某物"，be常用现在时，过去时和将来时等。如：
Oh, cool! And there are many things to see. There is even a deer park in Sanya.
There are about 80 pyramids in Egypt.
Will there be a football match in your school next week?
功能四，实义be
可以将be视为实义动词，因为它具有实际的词义，如"成为;做;发生;举行;逗留;到达"等。如：
His daughter wants to be a doctor for animals in her twenties.
Kate's birthday party will be at half past six this evening.
Jim has been in China for more than two years, but he has not yet been to Yichang.
第3个回答 2022-08-14
be动词的三种形式是is、am、are。
1、is，英音：[iz] 美音：[ɪz]，用于第三人称单数现在时。
例句：Mr. Smith is a very good English teacher.史密斯先生是个很好的英语教师。
2、am，为不及物动词，系动词。
例句：I am a teacher and they are my students.我是老师，他们是我的学生。
3、are，是。
例句：There are a lot of tourists there.那里有许多观光客。
1、is，英音：[iz] 美音：[ɪz]，用于第三人称单数现在时。
例句：Mr. Smith is a very good English teacher.史密斯先生是个很好的英语教师。
2、am，为不及物动词，系动词。
例句：I am a teacher and they are my students.我是老师，他们是我的学生。
3、are，是。
例句：There are a lot of tourists there.那里有许多观光客。
第4个回答 2016-08-01
小学只有1.am.2.is.3.are
I am a student 我是一个学生
she is beautiful. 她很漂亮
they are students 他们是学生
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