请问“have”的用法是什么

请问“have”的用法是什么

has是have的第三人称单数形式。
当主语是第三人称，如he,she等时使用。
[解题过程]
have用法种种

在英语单词中，have是一个用法相当广泛的动词。它不仅是一个实义动词，本身包含具体的词意“有”，还可以用作助动词。更重要的是have可以和很多单词构成短语，这是其它动词难以相比的。

从表面上看，have是一个开音节词，但它却是按闭音节来读的，即/hv/。还有一个与众不同之处是，它的单数第三人称不像其它动词的第三人称单数那样，在动词原形后面加-s，它的第三人称单数是has。
这个动词本身的词义是“有”。例如：

I have a pen.

Michael has a new soccer.

They have an expensive house.

在由have作谓语的句子变疑问句或否定句时，在美式英语中，无论何种情况，都要借助于助动词do或does。例如：

Do you have a dictionary?

He doesnt have any coffee.

在英式英语中，现在时的否定句、疑问句通常不用助动词do而用have not，Have you...?的形式，但最近受到美式用法的影响和一般动词一样，已渐有使用do的倾向。

have还可以和很多单词，特别是那些既是动词又是名词的词连用，构成很多短语，其词意则是由与其连用的词语来决定，它的活跃之处也就在于此。例如：

have a talk 谈话 have a tea 喝茶

have a rest 休息一会儿 have a class 上课

have a hike 远足 have a picnic 野炊

have a concert 举办音乐会 have a visit 参观；访问

have a look 瞧一瞧

have a sleep 睡一会儿觉

have的这类短语还有很多，只要大家留意，会在以前学习过的课文中发现很多。这种短语还有自己的宾语或其它成分。例如：

What a nice photo!Let me have a look (at it).

Youd better have a talk with him.

have还可以和表示疾病的名词连用，表示正在或曾经生过某种疾病。例如：

have a headache 头痛 have a stomachache 胃痛；肚子痛

have a toothache 牙痛 have a sore throat 喉咙痛

have a cough 咳嗽 have a cold 感冒

have a fever 发烧 have a sore back 背痛

如果我们回答医生询问病情时，一般这样来回答：

—Whats the matter (with you)?

—I have a sore foot.

—Whats the matter (with you)?

—I have a bad cold.

have的用法还有很多，由于大家尚未接触到，这里就不讲解了。

have aux. 1. 已经,曾经 n. 1. 吃,从事,得到,雇用,享有,有,允许 the gap between the haves and the have-nots is widening. 贫富之间的差距在扩大。 v.aux. 1. [构成各种完成形式]业已, 曾经 they haven't finished the job yet. 他们尚未完成该项工作。 you haven't been abroad before, have you? 你以前没出过国, 是吧? ②[用于虚拟语气] she might have come if she hadn't been so busy. 当时若不是那么忙,她是可能来的。 if they had [had they] time, they would certainly come and help us. 如果他们有时间, 他们一定会来帮助我们。 vt. 1. &v. 有 they had their lunch in a cafeteria. 他们在一家自助餐厅吃了午饭。 the manager is having a meeting. 经理正在开会。 this coat has no pockets. 这件衣服没有口袋。 many people have doubts about the new project. 许多人对这项新工程有怀疑。 we gave him a present, but he wouldn't have it. 我们给他一件礼物,但他不肯接受。 更多例句 top we were having breakfast. 我们正在吃早餐。 i had a letter this morning. 我今天收到一封信。 i cannot have such behaviour in my house. 我不能容忍家中有这种行为。 have you got time to phone him? 你有时间给他打电话吗？ have you got a pencil? 你有铅笔吗？ she won't have boys arriving late. 她不允许这些男孩子迟到。 i have an apartment in downtown manhattan. 我在曼哈顿中心区有一套住房。 do you have any idea where he lives? 你知道他住在哪里吗？