have和has的用法口诀

have/has的用法口诀

动词have表示“有”，

位置就在主语后。

“三单”主语用has，

其他人称用have。

一般问句句首do/does添。

否定句子也一样，

don’t /doesn’t主语后面站。

1.A dog has four legs.

2.Our school has a library.

3.We have 37 chairs in our classroom.

4.My sister has a nice toy car.

5.Does that girl have a doll?

6.Do Tom and his brother have a big bedroom?

7.I don'thave a model plane.

8.Lily doesn't have a doll.

Have与has的用法区别

have与has都是“有”的意思，但二者用法是有区别的。

在陈述句中，当主语是单数第三人称(he、she、it)时，句子的谓语是“有”时，用has;当主语是其他人称(I、you、we、they)时，句子的谓语是“有”时，用have。

例句：

I You have an apple .

WeThey have some apples .

HeShe has a pen .

但是，在疑问句中，当主语是就单数第三人称提问或否定句时用助动词does 和does not (doesn't)，然后把has 变成have 如果不是第三人称,助动词就是do ,否定式do not (don't).特殊疑问句回答照样,该是has 还是has 该是have 还是have 但是当一般疑问句 以do或does开头的时候,只能回答 do dont 或者 does doesn't

例句：

Do you have a book ? yes ,I do /No , I don't

What does a cat have ? the cat has a ,,,,,,,

He doesnt have any coffee.

就是第二种：have本身也可以作为助动词，(作为完成时里的助动词)本身无词义，和do 一样,has 就相当于does 在单三情况下用, 主要用于构成各种时态、语态、语气以及否定和疑问结构。(那此时的have还是has就要看具体的人称而定)完成时态是have/had + done (过去分词的形式)

I have finished my work, she has finished her work

have you finished your work? has she finished her work? 在一般疑问句里回答直接用have/has

yes,i have/ No , i haven't Yes, she has/ No, she hasn't(因为这里have/has是助动词)