have的助动词用法
谈谈have作助动词用法
谈谈have作助动词用法have在现代英语中是用得较多的动词之一。
它除了用作实义动词(ordinary verb), 表示topssess (具有),to hold (保持),to experience (经验)等意义外,还大量用作助动词。
现就其助动词用法作一简述:一、帮助构成完成时和完成进行时的各种时态。
例如:1)完成时:He has finished his task.The sun had already set before we arrived at the railway station.He shall have written the article by then.2) 完成进行时:I have been working as an interpreter for years.He told me that he had been waiting for me even since the morning.二、帮助构成复合谓语(和不定式动词连用)。
1) have to的用法。
具有语气动词的作用,表示必须履行的义务责任(obligation), 或表示客观情况的需要,或必然性,几乎同情态动词must具有同样的意义。
例如:I have to go there = I must go there.If you want to catch the first train you have to leave at six.He sees very badly, he has to wear glasses all the time.The children have to play in the streets till their mothers get home from work.In my district there is no gas laid on; people have to use electricity for every thing.be to和have to在意义上是不相同的。
have的各种意思及用法
have原形,用于第一人称(I, we),第二人称(you),及第三人称复数(they)或者复数名词;has是have的第三人称单数形式(he, she, it)或单数名词,或不可数名词做主语;having 是have的现在分词;had是have的过去式;过去分词。
一、have用作实义动词。
1. have 用作“有”表示拥有的意思。
如:I have an apple and he has two bananas. 我有一个苹果,他有两个香蕉。
You have a new English teacher. 你们有了一个新的英语老师。
It has two big eyes. 它有一双大眼睛。
2.have 有“吃、喝”的含义。
如:have breakfast 吃早饭have lunch 吃午饭have supper 吃晚饭have dinner 吃正餐have a meal 吃一顿饭例句:I often have milk and eggs for breakfast.我早饭经常喝牛奶吃鸡蛋。
Do you usually have tea in the afternoon?你通常下午喝茶吗?What do you often have for your three meals?你的一日三餐通常吃什么?3.have 用来描述病情。
如:have a cold 感冒have a toothache牙痛have a fever发烧have a sore back背痛例句:“What’s the matter?”你怎么了?“I have a toothache.”我牙疼。
4. have to 不得不,与must意思相同。
如:I have to tidy my room.我不得不整理房间。
She has to help with the washing.她得帮忙洗衣服。
You don't have to go if you don't want to.如果你不想去,你就不必去。
英语have和has的用法
英语have和has的用法
"have"和"has"都是助动词,用来构成现在完成时态和过去完成时态的句子。
它们的使用取决于主语的人称和数量。
以下是它们的用法:
1. "have"用于第一人称复数(we)和第三人称复数(they)的主语,以及所有主语在非第三人称单数(I,you,we,they)时:
例句:We have finished the project.(我们完成了这个项目。
) They have traveled to Europe.(他们去过欧洲。
)
2. "has"用于第三人称单数(he,she,it)时:
例句:He has read the book.(他读过这本书。
)
She has a cat.(她养了一只猫。
)
It has been raining all day.(一整天都在下雨。
)
注意:在现在完成时态和过去完成时态的疑问句和否定句中,“have”和“has”需要倒装。
例如:
疑问句:Have you finished your homework?(你完成作业了吗?)
否定句:She hasn't arrived yet.(她还没有到达。
)。
had和have的用法
had和have的用法"Have"和"Had"都是英语中的助动词,用于构成各种时态和语态。
它们的用法如下:
"Have"用于现在时态和过去分词,表示拥有或已经完成的动作。
例如:
I have a car.(我有一辆车。
)
She has finished her homework.(她已经完成了她的作业。
)"Had"用于过去完成时态和虚拟语气中,表示过去某个时间点之前已经完成的动作。
例如:
I had finished my work before I went to bed.(我在睡觉前已经完成了我的工作。
)
If I had known the answer, I would have told you.(如果我知道答案,我会告诉你的。
)
总之,"have"和"had"都是非常常用的助动词,需要根据上下文和语境来正确使用。
万能词have的用法
万能词have的用法一、have的基本含义和用法1.1 have作为动词意味着“拥有”或“具备”•表示物品的所有权,例如:–I have a car.(我有一辆车。
)–She has three cats.(她有三只猫。
)•表示人们所具备的特质或能力,例如:–He has a great sense of humor.(他有很强的幽默感。
)–They have a lot of experience in this field.(他们在这个领域有很多经验。
)1.2 have用作情感或感觉的动词•表示经历或感受到某种情感或感觉,例如:–I have a headache.(我头疼。
)–She has a feeling of frustration.(她有种挫败感。
)二、have的其他用法2.1 have作为助动词•表示完成时态,例如:–They have gone to the cinema.(他们去电影院了。
)–He has finished his homework.(他完成了作业。
)2.2 have作为帮助构成某些动词短语•have + to + 动词原形,表示义务或必要性,例如:–I have to study for the exam.(我得为考试学习。
)–She has to finish the report by tomorrow.(她必须在明天之前完成报告。
)•have + 动词的过去分词,表示完成或被动的意义,例如:–We have finished our project.(我们完成了我们的项目。
)–The book has been read by many people.(这本书已经被很多人读过。
)2.3 have用作动词与介词的搭配•have + 宾语 + 介词短语,表示拥有或进行某种行为,例如:–He has a cup of coffee in the morning.(他早上喝一杯咖啡。
浅述have用法
xt weekend.我们下个周末有个聚会。We are going to have a talk this afternoon.我
们今天下午有个报告会。Are we going to have a meeting this week?这个星期我们要开会吗?3.h
ave与to连用,构成情态动词(相当于must),表示“不 得不”、“必 须”,可用于各种时态。I had to work last
ave作助动词时,与它的变体has、had常常与动词的过去 分词一起构成现在完成时和过去完成时。如:Great changes hav
e taken place the last two years.过去的两年已经发生了很 大的变化。(现在完成时)They said
that the Arab had stolen their camel.他们说阿拉伯人偷了 他们的骆驼。(过去完成时)2.have作
英语中,have是一个用法相当广泛的动词,它不仅含有 具体词义“有”的意思,可以做实义动词 ,还是常见的 助动词。另外have还可以和很
多单词构成短语,也是其它动词难以相比的。这篇我们 作为have这个常见单词的开篇,浅述have用法。1.havve的用法)Have you heard about Peter and Corinne?你听说过彼特和科琳的事情吗?h
e. b.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。如: Do you
have a dictionary? 你有字典吗?He doesn't have any coffee. 他没有咖啡。②后面接名词,
可以表示一种活动,如:I‘m going to have a bath.我准备 去洗澡。We're having a party ne
have 的用法
4.
have作“有”解释时,在英国的口语中,常 用have got 代替have.这种用法在疑问句和否 定句中比在肯定句中用得更多。 He owns a house in the countryside. =He has a house in the countryside. He has a TV set. = He has got a TV set. I have got a new bicycle. Have you got a new bicycle? I haven’t got a new bicycle. I have a new bicycle . Do you have a new bicycle? I don’t have a new bicycle.
短语 pick up pick up pick up pick up pick out
含义 拿起、捡起 意外地找到 (偶然地)学会 开车去接 挑出、选出、
例句
The snake charmer picked up the long pipe.
The bicycle was picked up in a small village . Didn’ t you pick up Chinese while you were in China? Where shall I pick you up,at your office or at your house?
3.
have作“有”解释时,否定式一般为 haven’t或hasn’t.这只有在have和宾语之间 有另一词如:any , an, a 等时,才可以使用, 如没有,一般用have no, has no. not a/ not any =no He has a beard. He has no beard. She hasn’t got a chance.(机会) I haven’t (got) any money. I haven’t (got) a very good friend.
have用法小结
have⽤法⼩结 have是⽤以构成完成式及完成式的不定式,表⽰已经…have⽤法⼩结有哪些呢?本⽂是店铺整理have⽤法⼩结的资料,仅供参考。
have⽤法⼩结 ⼀、have作实意动词. 1.表⽰“有”的意思. Look,I have wings,just like you. He had fair hair and blue eyes. 〔注1〕:其否定和疑问形式变化,在美国通常⽤助动词do. 〔注2〕:在英国⼝语中常⽤have got代替have. Look,can’t you see I've got teeth,too. I haven't got any jewelry. 2.have和⼀些其他名词连⽤,表⽰: (1)⼀种活动. We have no classes on Sunday.(上课) they’re going to have a volleyball match.(举⾏⽐赛) Are we going to have a meeting this week?(开会) We are going to have a talk this afternoon.(听报告) (2)患病. I have got a headache. I have a bad cold. (3)发⽣的情况. I've had so many falls that I'm black and blue all over.(跌跤)(JBⅣL10) (4)⽣育. The queen ant may have tens of thousands of babies in one summer. 3.和⼀与动词同形的名词连⽤,表⽰⼀个动作(have+a+由动词转化和名词). Are you going to have a swim. I have a long talk with the teacher. 4.have on sth.或have sth.on,表⽰“穿着”、“戴着”(=to be wearing). I noticed he had on bedroom slippers. At the ball Motile had a diamond necklace on. 5.表⽰“吃”、“喝”. I wanted to have a cup of tea and some eggs. Does she have lunch at home? 6.组成复合结构即“have+宾语+宾语补⾜语”. (1)不加to的动词不定式作宾语补⾜语(have sb.do sth.),表⽰让、叫某⼈做某事. The soldier had him stand with his back to his father. 〔注〕:否定结构表⽰“不能让…”或“从未有⼈…”. We won't have you blame it on others. She had never had anybody speak to her that way before. (2)现在分词作宾语补⾜语(have sb.(sth.)doing),表⽰让(使)某⼈做某事. …the two men had their lights burning all night long…. (3)过去分词作宾语补⾜语(have sb.(sth.)done),表⽰: ①使(让,请)别⼈作某事,表⽰的动作是别⼈做的. Emperor Qin Shi Huang had all the walls joined up. …he should have new clothes made of this splendid cloth for the coming great procession. ②遭遇到某事. Houses near airports sometimes have their windows broken. Workers in some industries have their hearing harmed by the noise of the machine. ⼆、have与to⼀起构成情态动词,表⽰“不得不”、“必 须”,可⽤于各种时态. I have to look after her at home. 三、have做助动词与动词的过去分词⼀起构成现在完成时 和过去完成时. Great changes have taken place the last two years. They said that the Arab had stolen their camel. 四、have⽤于“情态动词+have+过去分词”的结构,有推测、假设之意. 1.must+have+过去分词,表⽰对过去时间发⽣的动作或存在的情况的推测,⼀般⽤于肯定句. Her father thought that she must have met a fairy. You must have left your bag in the theatre. 2.can(could)+have+过去分词,表⽰对过去发⽣事情的“不肯定”,常⽤于否定句和疑问句. He can't have been to your home,he doesn't know your address. 3.should+have+过去分词,表⽰“某事本该早做⽽实际未做”,⽤于肯定句. You should have been here five minutes ago. 五、have⽤于某些成语,表⽰固定的意思. 1.have a word(a few words)with sb.,表⽰和某⼈说⼀(⼏)句话. Where's Peter?I want to have a word with him. 2.had better+不带to的动词不定式,表⽰“…最好…”. I'd better go and look for him now. 3.have nothing(something)to do with,表⽰“和…⽆(有)”关系. Most of questions had nothing to do with Edison's lessons. 动词have的⽤法 动词have在中学英语中的⽤法 ⼀、have作实意动词。
have的用法及主系表结构
have/has的用法1、当 have 表示“拥有、具有”这个概念的时候,其否定形式和疑问形式各有两种。
这种情况,可以在 have/has 后直接加not, 也可以像普通动词那样,借助一般现在时助动词 do/does 来表示否定和疑问。
I haven't a sister./ I don't have a sister.Have you a sister?/ Do you have a sister?have当“拥有”讲时,可用于所有一般时态,却不能用于进行时态。
2、当have表示行为动作的时候,不可以在have/has后直接加not,而要借助一般现在时助动词do/does来表示否定和疑问。
have 作实义动词时可以用于各种时态。
I have my lunch at twelve every day.I don't have my lunch at twelve every day.Do you have your lunch at twelve everyday?have/has 实义动词,有时可以代替一些普通动词,如吃、喝、跳、游泳等eat one's lunch/have one's lunch;take/have some medicine;have a swim;have a chat(talk/walk);have a rest;have/ take a break;have a cup of coffee;eat one's lunch/have one's lunch3、have可以作为助动词,其一,用于现在完成时。
其二,没有实际意义。
have/has/haven't/hasn't.I have been to H.K..She has been to U.S.A..4、have(have got)常与表示疼痛和疾病的名词连用。
2019-2020-助动词have的用法和例句-优秀word范文 (2页)
2019-2020-助动词have的用法和例句-优秀word范文
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助动词have的用法和例句
今天,小编给大家讲解助动词 have 的用法和例句,希望对大家的学习有帮助。
助动词 have 的用法和例句
have 作为助动词可以:
1.构成完成时态( have +过去分词):
What has happened ?
出了什么事?
He told me Jane had left .
他告诉我简已经走了。
She will have arrived by this time tomorrow .
明天这时她就会到了。
How long have you been there ?
你在那里待了多久?
2.构成完成进行时态( have + been +现在分词)
We have been trying to contact you .
我们一直在想和你联系。
She has been teaching there for thirty years .
她在那里任教达三十年。
That was the book he had been looking for .。
动词have的用法
动词have的用法动词"have"的用法一、have的基本含义及用法二、have表示拥有1. 持有或拥有某物2. 拥有经历或经验3. 体会到某种感觉或情绪三、have表示发生或存在1. 表示时间的推移或事件的进行2. 表示出现某种情况或状态四、have用作助动词和情态动词补充他动词的时态和语气五、其他常见短语和固定搭配中的have用法一、have的基本含义及用法动词"have"是英文中最常见且多功能的一个动词之一。
它可以用来表达拥有、发生、存在等不同的意思,也可以充当助动词和情态动词。
以下是关于"have"的详细解释。
二、have表示拥有1. 持有或拥有某物:例如:"I have a pen."(我有一支笔。
)在这个例子中,"have"被用来表明我所拥有的东西。
2. 拥有经历或经验:例如:"I have been to China."(我去过中国。
)这个句子中,"have"既表示我曾经到过中国,也可以理解为我经历过去中国的经历。
3. 体会到某种感觉或情绪:例如:"I have a headache."(我头疼。
)这个例句中,"have"用来表示我正在经历一种不舒服的感觉。
三、have表示发生或存在1. 表示时间的推移或事件的进行:例如:"I have studied English for five years."(我学习英语已经五年了。
)在这个句子中,"have"表达了过去开始并一直持续到现在的时间间隔。
2. 表示出现某种情况或状态:例如:"She has a cold."(她感冒了。
)这个句子中,"have"表示某人目前正在患有感冒这样一种状态。
have用法小结
have用法小结have是用以构成完成式及完成式的不定式,表示已经…have用法小结有哪些呢?本文是店铺整理have用法小结的资料,仅供参考。
have用法小结一、have作实意动词.1.表示“有”的意思.Look,I have wings,just like you.He had fair hair and blue eyes.〔注1〕:其否定和疑问形式变化,在美国通常用助动词do.〔注2〕:在英国口语中常用have got代替have.Look,can’t you see I've got teeth,too.I haven't got any jewelry.2.have和一些其他名词连用,表示:(1)一种活动.We have no classes on Sunday.(上课)they’re going to have a volleyball match.(举行比赛)Are we going to have a meeting this week?(开会)We are going to have a talk this afternoon.(听报告)(2)患病.I have got a headache.I have a bad cold.(3)发生的情况.I've had so many falls that I'm black and blue all over.(跌跤)(JBⅣL10)(4)生育.The queen ant may have tens of thousands of babies in one summer.3.和一与动词同形的名词连用,表示一个动作(have+a+由动词转化和名词).Are you going to have a swim.I have a long talk with the teacher.4.have on sth.或have sth.on,表示“穿着”、“戴着”(=to be wearing).I noticed he had on bedroom slippers.At the ball Motile had a diamond necklace on.5.表示“吃”、“喝”.I wanted to have a cup of tea and some eggs.Does she have lunch at home?6.组成复合结构即“have+宾语+宾语补足语”.(1)不加to的动词不定式作宾语补足语(have sb.do sth.),表示让、叫某人做某事.The soldier had him stand with his back to his father.〔注〕:否定结构表示“不能让…”或“从未有人…”.We won't have you blame it on others.She had never had anybody speak to her that way before.(2)现在分词作宾语补足语(have sb.(sth.)doing),表示让(使)某人做某事.…the two men had their lights burning all night long….(3)过去分词作宾语补足语(have sb.(sth.)done),表示:①使(让,请)别人作某事,表示的动作是别人做的.Emperor Qin Shi Huang had all the walls joined up.…he should have new clothes made of this splendid cloth for the coming great procession.②遭遇到某事.Houses near airports sometimes have their windows broken.Workers in some industries have their hearing harmed by the noise of the machine.二、have与to一起构成情态动词,表示“不得不”、“必须”,可用于各种时态.I have to look after her at home.三、have做助动词与动词的过去分词一起构成现在完成时和过去完成时.Great changes have taken place the last two years.They said that the Arab had stolen their camel.四、have用于“情态动词+have+过去分词”的结构,有推测、假设之意.1.must+have+过去分词,表示对过去时间发生的动作或存在的情况的推测,一般用于肯定句.Her father thought that she must have met a fairy.You must have left your bag in the theatre.2.can(could)+have+过去分词,表示对过去发生事情的“不肯定”,常用于否定句和疑问句.He can't have been to your home,he doesn't know your address.3.should+have+过去分词,表示“某事本该早做而实际未做”,用于肯定句.You should have been here five minutes ago.五、have用于某些成语,表示固定的意思.1.have a word(a few words)with sb.,表示和某人说一(几)句话.Where's Peter?I want to have a word with him.2.had better+不带to的动词不定式,表示“…最好…”.I'd better go and look for him now.3.have nothing(something)to do with,表示“和…无(有)”关系.Most of questions had nothing to do with Edison's lessons. 动词have的用法动词have在中学英语中的用法一、have作实意动词。
have的用法归纳总结
have的用法归纳总结以《have的用法归纳总结》为标题,写一篇3000字的中文文章英语句子里极为重要的一个助动词就是“have”,它有很多不同的含义和用法,因此在英语学习中掌握它是十分必要的。
本文的目的就是要介绍have的各种用法,以便提高读者的英语水平。
首先,需要明确的一点就是have一共具有六种基本形式,分别是:have、had、has、having、be having been having。
其中,have、had和has都是一般现在时,而having、be having和been having 都是进行时形式。
除了有六种不同的形式之外,have也有十四种不同的用法:(1)有:表示拥有物品或状态;例如:I have a computer.(我有一台电脑。
)(2)助动词:充当句子的主语或表示情态动词;例如:He has gone to school.(他已经上学去了。
)(3)名词的拥有者。
例如:The girl has a book.(那个女孩有一本书。
)(4)能力:表示掌握某个技能;例如:I have a good command of English.(我英语掌握得很好。
)(5)对……的兴趣:表示对某一特定科目的兴趣;例如:She has a great interest in English.(她对英语很感兴趣。
)(6)经历:表示自己经历过某件事;例如:I have been to Beijing many times.(我去过北京很多次了。
)(7)有关系:表示存在某种关系;例如:They have a good relationship.(他们的关系很好。
)(8)发生:表示某件事正在发生;例如:Something strange is having.(发生了一些莫名其妙的事情。
)(9)经历过:表示自己过去经历过某件事;例如:She had an accident last year.(她去年出过车祸。
Have用法种种
一、have作实意动词1. 表示“有”的意思。
Look, I have wings, just like you.He had fair hair and blue eyes.〔注〕:其否定和疑问式变化,在美国通常用助动词do。
在英国口语中常用have got代替have.I don't have enough money to buy a plane.I haven't got any jewelry.2. have和一些其他名词连用,表示:(1)一种活动。
We have no classes on Sunday. (上课)T hey’re going to have a volleyball match.(举行比赛)Are we going to have a meeting this week?(开会)(2)患病。
I have got a headache.I have a bad cold.(3)发生的情况。
I've had so many falls that I'm black and blue all over.(跌跤)(4)生育。
The queen ant may have tens of thousands of babies in one summer.(5)体验;经验[W]We had a wonderful time on the beach. 我们在海滩上玩得好极了。
3. 和一些动词同形的名词连用,表示一个动作(have+a+由动词转化为名词)。
have a drink 喝(某东西)have a swim 游泳have a try 尝试have a talk 谈话have a walk 散步have a look 看一看Are you going to have a swim?I have a long talk with the teacher.4. 拿;得到,取得[W]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。
助动词have的用法
st have left your bag in the theatre.你一定是把包丢在了剧 院。②can(could)+have+
过去分词,表示对过去发生事情的“不肯定”,常用于 否定句和疑问句。He can't have been to your home, h
e doesn't know your address.他可能没去过你家,他都不 知道你的地址。There is no light i
些新闻吗?I haven't seen them.(NOT I don't have seen them) 我没有见过他们。
全文完!
北京日语同声传译公司 ty19htvv
之前。如:I’d like to have lived in the eighteenth century.我 想住在18世纪。it
is thought to have happened。它被认为发生了。6.“having +done”和“having been
done",构成现在分词的完成式(perfect participle)。 Having been written in haste,
week. 你本应该上周交作文的。④“ought to + have+过去 分词”与“should + have+过去分词”同义,
只是语气较强,常含有遗憾、责备、批评等感情色彩。 We ought to have given you more help. 我们本应
该给你更多的帮助。 You ought to/ should have told us earlier. 你应该早点告诉我们的。⑤“
这篇我们详细讲讲助动词have的用法。一、have做助动 词,后面常跟动词的过去分词一起构成完成时态 (”have+过去式"结构)。根据
常用英语动词Have的几种用法
常用英语动词Have的几种用法Have的用法详解:含义、用法及实践案例在英语中,动词have是一个十分常用的词,它既可以作为实义动词,表示拥有、具有的意思,也可以作为助动词,构成各种时态的动词形式。
下面我们将对have的用法进行详细解析,并通过实践案例来加深理解。
一、have作为实义动词的用法1.表示拥有、具有当have表示拥有或具有某种属性或物品时,可以与名词、形容词、介词短语等搭配使用。
例如:I have a car.(我有一辆车。
)She has a beautiful garden.(她有一个美丽的花园。
)2.表示发生、进行have还可以表示某种事情的发生或进行,如:It has rained since morning.(自从早上就开始下雨了。
)They have been to China twice.(他们已经来过中国两次了。
)二、have作为助动词的用法1.构成完成时态have作为助动词,常与主语和动词原形搭配,表示动作的完成。
如:I have eaten breakfast.(我已经吃过了早餐。
)She has finished her homework.(她已经完成了作业。
)2.构成完成进行时态have也可以与主语和动词的现在分词形式搭配,表示动作的完成和进行。
如:I have been studying English.(我一直都在学习英语。
)She has got used to living in the city.(她已经适应了城市生活。
)3.与其他助动词搭配使用have还可以与其他助动词如had、have、had been等搭配,构成各种时态的疑问句和否定句。
如:Have you finished your work?(你完成工作了吗?)She hasn't arrived yet.(她还没到。
)实践案例:下面我们通过一些实际例句来巩固have的用法:1. I have lost my keys.(我丢失了钥匙。
助动词have的用法
助动词have的用法一、引言在英语中,助动词have 是一个非常重要的词汇,它有多种用法和意义。
正确使用have能够帮助我们表达过去的经历、行为和状态,也可以用来表示现在或将来的进展。
本文将详细介绍have的用法及其相关例句。
二、have 的基本用法1. 表示拥有或具备某种东西:- I have a car.(我有一辆车。
)- Mary has two cats.(玛丽养了两只猫。
)2. 表示经历过某种情况或感受到某种感觉:- He has had a difficult day at work.(他在工作中度过了很难的一天。
)- They have experienced many challenges in their lives.(他们在生活中经历了许多挑战。
)3. 表示进行或完成某项动作:- We have finished the project ahead of schedule.(我们提前完成了这个项目。
) - Have you ever tried sushi?(你试过寿司吗?)4. 表示出现某种疾病或身体不适:- She has a headache today.(她今天头疼。
)- They have a cold and can't come to the party tonight.(他们感冒了,不能参加今晚的聚会。
)三、have+过去分词1. 表示已经完成的动作或状态:- She has finished her homework.(她已经完成了作业。
)- They have lived in this city for ten years.(他们在这个城市住了十年。
)2. 表示过去某一时刻之前已发生的事情:- I had already eaten dinner when she arrived.(她到达时,我已经吃过晚饭了。
) - He realized he had left his keys at home after arriving at the airport.(他到机场后才意识到把钥匙忘在家里了。
have作助动词的用法
have作助动词的用法
"have" 作为助动词有以下几种常见的用法:
1. 表示完成时态:在完成时态中,have 作为助动词,后面跟过去分词。
例如:
- She has finished her work.(她已经完成了工作。
)
- I have seen this movie before.(我之前看过这部电影。
)
2. 表示情态动词:have 可以用于表示情态动词,表示别人应该、可能或者不应该做什么。
例如:
- You have to be punctual.(你必须准时。
)
- You shouldn't have done that.(你不应该那样做。
)
- I have to go to the dentist tomorrow.(我明天必须去看牙医。
)
3. 表示另外一件事情的发生:have 可以用于表达某件事情发生在另外一件事情之前或者同时发生。
例如:
- I had just finished my homework when the phone rang.(我刚做完作业,电话铃响了。
)
- She was having breakfast when I arrived.(我到达时她正在吃早餐。
)
需要注意的是,have 作为助动词还有其他的一些用法,这些用法在不同的语境下表达的意思也会有所不同。
现在完成时的助动词
现在完成时的助动词
现在完成时的助动词是"have/has"。
它们用于构成现在完成时的
句子,其中have用于第一人称(I,we),has用于第三人称单数(he,she,it)和单数名词。
这些助动词后面跟着过去分词形式的动词。
例如:
- I have studied for the exam.(我已经为考试学习过了。
)
- She has traveled to many countries.(她已经去过很多国家。
)
- They have finished their homework.(他们已经完成了他们
的作业。
)
此外,现在完成时也可以包含时间状语,如"since"和"for",来
表示某个动作或状态从过去一直持续到现在。
例如:
- I have been working here since 2010.(我自2010年以来一
直在这里工作。
)
- She has lived in this city for five years.(她在这座城市住了五年了。
)
需要注意的是,现在完成时强调的是过去发生但对现在有影响或重要性的动作或状态。
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have的助动词用法
(1)表达完成时态
句型 have (has, had)+. …
句型 can (could), …have + .
例:He can’t have said such a foolish word.
(他不像是会说了这样傻的话。
)
?
解说:本例句是在表达对过去的推想。
(2)“have”的惯用句式
句型had better +V…
例:You had better go and tell her everything.
(你最好去向她把事情全盘地说明白。
)
解说有些文法学家把本句式的“had better”称为半助动词(Semiauxiliary verb),因为“had better”之后接原形动词,其本身所表现的功能很像是一个助动词。
“had better”不可分开使用,“had”亦非过去形式。
实际上“had better”所指的时间性是现在或将来,若是指过去则用“had better + have +.”。
本句式绝无“have/has better +V”的形式,宜注意。
本句式是用于表达建议或劝告,言外之意是“若不这样做就不好或会有不良后果”。
例:You had better take an umbrella.
(If you don’t do, it may rain and you’ll get wet.)
本句式也可用于第三人称。
例:He had better stop smoking.
(他最好把烟戒掉。
)
“had better + V”的否定是把“not”置于“better”之后,例如:
例:You had better not b orrow money from your friend’s wife.
(你最好不要向朋友的太太借钱。
)
本句式的“had”因发轻音,有时甚至轻到几乎不发音,所以也就常被省略。
例:You had better take an umbrella with you.
=You’d better take an umbrella with you.
=You better take an umbrella with you.
=Better take an umbrella with you.
(你最好带一把雨伞去吧。
)
“had better”可用“had best”来加强语气。
例:We had best hurry, or we’ll miss the train.
(我们最好快一点,不然就赶不上火车了。
)?
本句式通常不用在疑问句,不过可以使用于附加疑问。
例:We’d better get on with the work, hadn’t we
(我们最好把工作赶一下,怎样)
(3)“have”表达义务
句型 h ave/has/had to + V…?
“have to + V”所表达的意思与“must + V”几乎相同,因此也有文法学家把“have to”称为半助动词。
?
例:I have to go to help her every Saturday.?
(每星期六我得去帮她的忙。
)
例:You have to take care of your sisters. It’s your duty.?
(你应该照顾你的妹妹,这是你的责任。
)
解说英式口语常用“have got”的表达法,实际上口语的“have got”是等于“have”,没有完成时的意思。
例:I have got to clean the blackboard before the teacher comes. (我必须在老师来之前把黑板清理好。
)
?
“have (got)to + V”的否定句和疑问句都使用“do”来造成。
例:Did you have to tell her everything
(你真的必须把每一件事都向她说吗)
例:You didn’t have to te ll her, did you
(你本来就没有必要向她说的,对不对)
“have (got)to + V”与“must + V”的区别:这两者,英、美人通常都不很在意地随便在使用,不过在讲究的语法中通常是,表达来自说话者本身的“需要或必须”时使用“must + V”,表达非来自说话者本身的“需要或必须”时则使用“have (got)to + V”。
例:I must go to bed now; I am very tired.?
(我很疲倦了,我必须上床去睡。
)
例:I’ve got to go now; my wife will be waiting for me.
(我必须走了,因为我的太太会在等着我。
)。