1. have on : 穿着, 戴着；
2. have had it : 完了；
3. have to : [have got to] 不得不, 只好；
1. have on : 穿着, 戴着；
2. have had it : 完了；
3. have to : [have got to] 不得不, 只好；
及物动词
1. I had my watch stolen last night.
昨晚我的手表被偷了。
2. They had their lunch in a cafeteria.
他们在一家自助餐厅吃了午饭。
3. I guess I have your ideas.
我想我明白你的意思。
4. I won't have anyone smoking in here.
我不容许任何人在这里抽烟。
圣诞节
A：Have a Merry Christmas.
祝您圣诞快乐!
B：Thank you.
谢谢。
经典对话
付款
1. 吃：had是吃饭的吃(have)这个动作的过去分词形式~[回答 5] have是表示完成时. had是吃饭的吃(have)这个动作的过去分词形式~
2. have：hospital availability exchange; 医院有效性交换
助动词用法（AUXILIARY VERB USES）
1. (have 和 has 与过去分词连用构成动词的现在完成时)
You use the forms have and has with a past participle to form the present perfect tense of verbs.
e.g. Alex has already gone...
亚历克斯已经走了。
e.g. I've just seen a play that I can highly recommend...
我刚看了一场话剧，我强烈推荐。
2. (had 与过去分词连用构成动词的过去完成时)
You use the form had with a past participle to form the past perfect tense of verbs.
e.g. When I met her, she had just returned from a job interview...
我遇见她时，她刚参加完一场求职面试回来。
e.g. By Friday at 5:30 p.m., I still hadn't heard from Lund...
直到周五下午5点半，我仍未收到伦德的消息。
3. (用于附加疑问句中)
Have is used in question tags.
have在线翻译
e.g. You haven't sent her away, have you?...
你还没有把她送走，是吗？
e.g. It's happened, hasn't it?...
这事儿已经发生了，是吗？
4. (用于对带有 have,has 或 had 的句子作肯定或否定回答)
You use have when you are confirming or contradicting a statement containing 'have', 'has', or 'had', or answering a question.
e.g. 'You'd never seen the Marilyn Monroe film?' — 'No I hadn't.'...
“你从未看过玛丽莲·梦露的电影？”“对，没有。”
e.g. 'Have you been to York before?' — 'Yes we have.'
“你们以前去过约克吗？”“是的，去过。”
5. （having 和过去分词连用，所引导的分句中提到的动作发生在另一个动作开始之前）
The form having with a past participle can be used to introduce a clause in which you mention an action which had already happened before another action began.
e.g. He arrived in San Francisco, having left New Jersey on January 19th...
1月19日离开新泽西后，他到了旧金山。
e.g. Having been told by his doctor that he was overweight, he's eating all the fibre and fruit he can.
被医生告知超重后，他一直拼命地吃高纤维食物和水果。
与描述动作的名词连用（USED WITH NOUNS DESCRIBING ACTIONS）
1. （have 后接名词代替该名词作动词的用法，描述某一动作或事件）
You can use have followed by a noun to talk about an action or event, when it would be possible to use the same word as a verb. For example, you can say 'I had a look at the photos' instead of 'I looked at the photos.'
e.g. I went out and had a walk around...
我出去在周围散了一会儿步。
e.g. She rested for a while, then had a wash and changed her clothes...
她休息了一会儿，然后洗了洗，换了身衣服。
2. （在英语口语或书面语中，have可以和很多名词连用以代替某个具体的动词，描述某一动作或事件）
In normal spoken or written English, people use have with a wide range of nouns to talk about actions and events, often instead of a more specific verb. For example people are more likely to say 'we had ice cream' or 'he's had a shock' than 'we ate ice cream', or 'he's suffered a shock'.
e.g. Come and have a meal with us tonight...
今晚来和我们一起吃饭吧。
e.g. We will be having a meeting to decide what to do...
我们准备开个会来决定怎么办。
其他动词用法和短语（OTHER VERB USES AND PHRASES）
1. 有;拥有
You use have to say that someone or something owns a particular thing, or when you are mentioning one of their qualities or characteristics.
e.g. Oscar had a new bicycle...
奥斯卡有一辆新自行车。
e.g. I want to have my own business...
我想自己创业。
2. 有…要（做）；必须（做）
If you have something to do, you are responsible for doing it or must do it.
e.g. He had plenty of work to do...
他有很多工作要做。
e.g. I have some important calls to make.
我要打几个重要的电话。
3. （用于代替 there is, 表示某事物存在或发生了某事）
You can use have instead of 'there is' to say that something exists or happens. For example, you can say 'you have no alternative' instead of 'there is no alternative', or 'he had a good view from his window' instead of 'there was a good view from his window'.
e.g. He had two tenants living with him...
有两位房客和他同住。
e.g. We haven't any shops on the island...
我们岛上什么店铺都没有。
4. （使）保持;（使）处于
If you have something such as a part of your body in a particular position or state, it is in that position or state.
e.g. Mary had her eyes closed...
玛丽双目紧闭。
e.g. They had the curtains open...
他们开着窗帘。
5. 请人做;让人做
If you have something done, someone does it for you or you arrange for it to be done.
e.g. I had your rooms cleaned and aired...
我请人打扫了你的房间并通了风。
e.g. They had him killed...
他们派人干掉了他。
6. 遭遇（不愉快的事）
If someone has something unpleasant happen to them, it happens to them.
e.g. We had our money stolen...
我们的钱被偷了。
e.g. The dance hall once even had its roof blown off in World War II.
这个舞厅的屋顶甚至在第二次世界大战中被炸飞过。
7. 劝说;让;命令
If you have someone do something, you persuade, cause, or order them to do it.
e.g. If you happen to talk to him, have him call me...
如果你碰巧能和他说话，让他给我打个电话。
e.g. The bridge is not as impressive as some guides would have you believe...
这座大桥并不像有些导游说的那么雄伟。
8. 抓住（某人身体的某部位）
If someone has you by a part of your body, they are holding you there and they are trying to hurt you or force you to go somewhere.
e.g. When the police came, Larry had him by the ear and was beating his head against the pavement.
警方赶到时，拉里正揪着他的耳朵，把他的头往人行道上撞。
9. （从某人那里）得到
If you have something from someone, they give it to you.
e.g. You can have my ticket...
我可以把我的票给你。
e.g. Can I have your name please?...
请告诉我你的名字好吗？
10. 患有（疾病、残疾）
If you have an illness or disability, you suffer from it.
e.g. I had a headache...
我头疼。
e.g. He might be having a heart attack...
他可能是心脏病发作。
11. 生（孩子）/怀（孩子）
If a woman has a baby, she gives birth to it. If she is having a baby, she is pregnant.
e.g. My wife has just had a baby boy...
我妻子刚生了个男孩。
e.g. She's having another baby.
她又怀上孩子了。
12. 不允许;不容忍
You can use have in expressions such as 'I won't have it' or 'I'm not having that', to mean that you will not allow or put up with something.
e.g. She wanted to be alone. They wouldn't have it...
她想一个人呆着。他们不允许。
e.g. I'm not having any of that nonsense...
我不想听那些废话。
13. 根据谣传/传说
You can use has it in expressions such as 'rumour has it that' or 'as legend has it' when you are quoting something that you have heard, but you do not necessarily think it is true.
have
e.g. Rumour has it that tickets were being sold for £300...
据谣传，票卖到了300英镑。
e.g. He could not possibly have been poisoned as popular legend has it.
他不可能像民间传说的那样被下了毒。
14. 跟…过不去;总想找…的茬儿
If someone has it in for you, they do not like you and they want to make life difficult for you.
e.g. He's always had it in for the Dawkins family.
他老是跟道金斯一家过不去。
15. 深藏不露;有两下子
If you have it in you, you have abilities and skills which you do not usually use and which only show themselves in a difficult situation.
e.g. 'You were brilliant!' he said. 'I didn't know you had it in you.'
“你真厉害！”他说，“我不知道你还有这两下子。”
e.g. He has it in him to succeed.
他具备成功的潜质。
16. 和…发生性关系
To have it off with someone or have it away with someone means to have sex with them.
e.g. He reckons she's having it off with the gardener.
他认为她和园丁有一腿。
17. 捉弄;戏弄
If you are having someone on, you are pretending that something is true when it is not true, for example as a joke or in order to tease them.
e.g. Malone's eyes widened. 'You're having me on, Liam.'
马隆瞪大了双眼。“你在戏弄我吧，利亚姆。”
18. 和…讲个明白;和…争论出个结果
If you have it out or have things out with someone, you discuss a problem or disagreement very openly with them, even if it means having an argument, because you think this is the best way to solve the problem.
have在线翻译
e.g. Why not have it out with your critic, discuss the whole thing face to face?
为什么不和批评你的人讲个明白，面对面地把整件事情谈一谈呢？
19. to be had -> see had
to have had it -> see had
情态动词短语（MODAL PHRASES）
1. 需要;必须;不得不
You use have to when you are saying that something is necessary or required, or must happen. If you do not have to do something, it is not necessary or required.
have的反义词
e.g. He had to go to Germany...
他不得不去德国。
e.g. We'll have to find a taxi...
我们需要找辆出租车。
2. 肯定;一定
You can use have to in order to say that you feel certain that something is true or will happen.
e.g. There has to be some kind of way out...
一定会有某种解决办法的。
e.g. That has to be the biggest lie ever told.
那肯定是有史以来最大的谎言。