have没有单复数之分，只是当助主语是第三人称单数（he/she/it/人名）的时候，have用成has，其余的时候都用原形have。have是行为动词，“有”的意思。相关短语：have a cold感冒；have a book有一本书。

have的变形

过去式：had

过去分词：had

现在分词：having

第三人称单数：has

复数：haves

have的基本用法

1、have sb do sth

(1)叫(请，使)某人做某事。如：

I’ll have her post the letter.我要叫她去寄信。

(2)容忍或允许某人做某事(用于否定句，尤与won’t,can’t连用)。如：

I won’t have you tell me what to do.我不能让你对我做的事指手划脚。

2、have sb(sth)doing sth

(1)使(让)某人(某事物)一直做在做某事。如：

He had the light burning all night.他让灯亮了一整夜。

(2)容忍或允许某人做某事(用于否定句，尤与won’t,can’t连用)。如：

He won’t have boys arriving late.他不允许孩子们迟到。

3、have sth done

(1)请(让)别人做某事。如：

We had the machine repaired.我们请人修理了机器。

(2)经历或遭遇某情况。如：

He had his finger cut.他的手指弄伤了。

4、have sth to do有某事要做。如：

I have a lot of work to do.我有许多工作要做。

5、have on

(1)穿着，戴着。如：

He had nothing on except a hat.他身上一丝不挂，只是戴了顶帽子。

have双语例句

This is too big─have you got a small one？

这个太大——有没有小的？

They have the support of most of the country.

他们有大多数国民的支持。

His family have been a very positive influence on him.

他的家庭对他有十分良好的影响。

Do you have any previous experience of this type of work？

你以前干过这种工作吗？

For years we had little knowledge of what life was like inside China.

以往很多年我们对于中国国内的生活情况所知甚少。

You're going to have to learn to give and take.

你们必须学会互相迁就。

Great art has the power to change lives.

伟大艺术品的力量可以改变人们的生活。

Have you ever used this software before？

你以前用过这种软件吗？

He has more money than the rest of us put together.

他的钱比我们所有人的加在一起还多。

Has he made it up with her yet？

他跟她和好了吗？

He said he didn't have time or made some such excuse.

他说他没时间或别的诸如此类的借口。

Any reasonable person would have done exactly as you did.

任何有头脑的人都会完全照你那样去做的。

When did you last have a period？

你上一次月经是什么时候？

He has the power to make things very unpleasant for us.

他掌握着我们的命运，可以把我们搞得狼狈不堪。

He had a genius for making people feel at home.

他有一种能够使人感觉轻松自在的本领。

He asked me who I had discussed it with.

他问我和谁讨论过此事。

He asked me with whom I had discussed it.

他问我和谁讨论过此事。

You couldn't have left it on the bus,could you？

你不可能把它落在公共汽车上了吧？

He still has a good head of hair.

他的头发依然很多。

He has more than his fair share of problems.

他的问题过多。