convenient 的用法与搭配
convenient 的用法与搭配
1. 无论表示“便利的”“不远的”，还是表示“方便的”“合适的”，均可与介词for, to 连用。
如：Our school is convenient for [to] the station.我们学校离车站很近便。
If it is convenient for [to] you, we’ll come tomorrow.如果你方便的话，我们就明天来吧。
2. convenient的实际意思是“使人感到方便的”，而不是“（自己）感觉到方便的”，所以它的主语通常不能是人。
如：Railway is convenient.铁路方便。
比较：误：I’ll come if you are convenient.正：I’ll come if it is convenient for [to] you.你若方便，我就来。
3. 其后可接不定式，但句子应带有形式主语或形式宾语it。
如：I think it (is) convenient to leave at once.我认为马上离开较适合。
Will it be convenient for you to start work tomorrow?明天就开始工作你觉得方便吗?有时也可能没有形式主语，而用“人”或“物”作主语，但此时句子的主语必须是其后不定式的逻辑宾语。
如：Mary is convenient to see on Sunday.= It’s convenient to see Mary on Sunday.星期天见玛丽较为方便。
The furniture is convenient to move.= It is convenient to move the furniture.这家具搬起来很方便。
新人教版英语必修二_Unit 3 核心词汇(背诵版)
Unit 3 The Internet1. convenient adj.方便的，便利的convenience n.方便，便利；便利设施inconvenient adj.不方便的，不便利的inconvenience n.不便，麻烦It is convenient for somebody to do sth 对于某人来说去做某事很方便at one’s convenience 某人方便时at your earliest convenience （书信用语）尽快，尽早例：（1）Safety is also a very important factor apart from comfort and convenience.（2）I want to know whether it is convenient for you to pick me up at the airport.（3）Sorry about the inconvenience we have made.（4）I would appreciate it if you could reply at your earliest convenience.2. stuck adj.卡住的，无法移动的；陷入，困于...be stuck in ... 被卡在...；被困在...（= be trapped in ... = be caught in ...）例：（1）My left foot was stuck in the tree.（2）She found herself stuck at home with only her computer to keep her company.（3）They got stuck in a traffic jam. That’s why they missed the gathering.3. benefit n.益处，好处v.使受益；得益于beneficial adj.有益的，有好处的；受益的benefit from ... 从...中受益for the benefit of sb = for one’s benefit 为了某人的利益be beneficial to ... = be of (great) benefit to ... 对...有益例：（1）This APP which can help us get in shape is beneficial to our daily life.（2）Surely we can benefit a lot from reading English novels.（3）The rain will benefit the crops greatly.（4）You must spend some time going through your resume for your benefit.4. distance n.距离，间距；远处，远方；冷淡，疏远distant adj.遥远的，远处的；（关系）冷淡的in the distance 在远处keep one’s distance 保持距离within walking distance 走路就能到at a distance of ... 在...远的地方例：（1）I noticed a woman waving to me in the distance.（2）The temple lies at a distance of 2 kilometers. In other words, it is within walking distance.（3）The coldness and distance in her voice surprised me a lot.5. inspire v.鼓舞，激励；启发，启迪，给...灵感inspiration n.灵感inspired adj.备受鼓舞的inspiring adj.鼓舞人心的，启发灵感的inspire sb to do sth 鼓舞某人去做某事（= encourage sb to do sth）例：（1）Beautiful photos serve as an excellent source of inspiration for designers.（2）Both my parents and teachers always inspire me to struggle for my bright future.（3）It’s a pity that you have missed the inspiring speech. We all feel inspired now.（4）The piece of music was inspired by dolphin sounds.6. access n.通道，（使用、查阅、接近...的）权利或机会v.进入，使用，获取accessible adj.可接近的，可使用的，可进入的have access to ... 可使用...，有使用/接近...的机会have no access to ... 得不到，没有使用/接近...的机会例：（1）You will have access to the Internet as long as you have a smartphone.（2）Now that you haven’t applied for an account, the website is not accessible to you.（3）Across the world, one billion people have no access to clean drinking water.7. account n.账目；账户v.解释，说明（= explain）accountant n.会计师account for ... 说明，做出解释；占...（比例）take ... into account 把...考虑在内（take ... into consideration）on no account 绝不（置于句首时句子要部分倒装）on account of 因为，由于（= because of）a bank account 银行账户the WeChat public account 微信公众号例：（1）Could you account for your rude behavior that night?（2）I would be very grateful if you could take my application into account.（3）On no account will I give up until I achieve my goal.（4）More than 70 households are engaged in making this traditional musical instrument, accounting for one tenth of the total.（5）Body language accounts for 55 percent of a first impression while what you say just 7 percent.（6）She was absent from school on account of illness.8. particular adj.特定的；特别的；讲究的，挑剔的in particular 特别，尤其（= especially）be particular about/over ... 对...讲究，对...挑剔例：（1）The giant panda eats only one particular type of bamboo.（2）I have stayed in quite many hotels on my journey, but I am fond of this one in particular.（3）It is embarrassing that some people attending the conference are particular about food and accommodation.9. familiar adj.熟悉的，熟知的，常见的be familiar with ... 对...熟悉be familiar to ... 被...熟知对比：be similar to ... 与...相似例：（1）I couldn’t recognize him though I was familiar with both his appearance and voice.（2）I use Christmas as an example because it is familiar to most readers.（3）I cannot tell the twins apart because they are quite similar to each other.10. go through 穿过；经历；仔细检查，通读例：（1）It took them a whole day to go through the forest.（2）Make / Bear in mind that you had better not make any comments if you haven’t gone through these things.（3）I would be very grateful if you could spend some time going through my resume and make necessary changes.11. tough adj.（物）结实的，坚固的；（人）强壮的，坚强的；（食物等）难切开的，嚼不烂的；（人）强硬的，严厉的；（生活工作等）艰苦的，艰难的例：（1）The rope is tough enough to support your weight.（2）The meat is too tough! It's hard to chew!（3）Don’t be too tough with him -- he is only a child.（4）When you go through tough times, you’ll meet others who are facing similar challenges.。
convenient短语
convenient短语"Convenient"（方便的）是一个常用的英文词汇，用于描述事物或条件对人们的使用或操作来说是简便、便捷的。
下面将提供关于“convenient”相关的短语，以及一些与便利相关的表达方式。
1. 常用表达“方便”的短语1.1 用于描述便利性的短语•方便快捷的(Convenient and quick)•轻松实现(Easy to accomplish)•顺手的(Handy)•便于操作(Easy to operate)•灵活方便(Flexible and convenient)•使用方便(User-friendly)•易于利用(Easy to utilize)•迅速方便(Swift and convenient)•省时省力(Time-saving and effortless)•无需麻烦(No hassle)•毫不费力(Effortless)•简易可行(Simple and feasible)•便捷高效(Convenient and efficient)1.2 用于强调方便性的短语•一切尽在掌握(Everything at your fingertips)•随时随地(Anytime, anywhere)•直截了当(Straightforward)•简明扼要(Concise and to the point)•方便快速解决问题(Quick and easy problem-solving)•省时省力的解决方案(Time-saving and effortless solution)•便于管理(Easy to manage)•无需繁琐步骤(No need for complicated steps)•一键完成(One-click completion)•高效便捷的服务(Efficient and convenient service)2. 与“便利”相关的习语和俗语2.1 习语•事半功倍(Half the work, double the result)•轻车熟路(Know the ropes)•小题大做(Make a mountain out of a molehill)•举一反三(Learn one, know ten)•触类旁通(Apply what one has learned to other similar things)•水到渠成(Everything falls into place)•游刃有余(Handle with ease)•出类拔萃(Stand out from the crowd)2.2 俗语•机不可失，时不再来(Seize the opportunity)•方便之事，勿为难事(Don't make easy things difficult)•人定胜天(Man can conquer nature)•胸有成竹(Have a well-thought-out plan)•事顺其自然(Let nature take its course)•万事俱备，只欠东风(All is prepared, only the east wind is needed)这些短语和表达方式可以帮助您更生动地描述事物的便利性，使语言更具表达力。
convenient的用法和例句
convenient的用法和例句convenient有便利的;方便的等意思，那么你知道convenient的用法吗?下面跟着店铺一起来学习一下，希望对大家的学习有所帮助!convenient的用法：convenient的用法1：convenient有两个意思:一是“时间适合某人”,二是“附近的”。
作“适合某人”解时,其主语是事或物而非人,表示主语具有“适合某人”的特征。
作“附近的”解时，常修饰distance等名词。
convenient的用法2：be convenient的意思是“是合适的”“是方便的”,在以表示事或物的名词作主语时,其后常接介词for 或to引起的短语。
在动词不定式或that从句作主语时常采用形式主语结构,动词不定式的逻辑主体可由介词for引出。
convenient的用法3：convenient作“附近的”解时,如用作表语,其后常接介词for;如用作定语修饰distance,须用介词from短语，表示“离…近”。
convenient的用法4：convenient在句中除用作定语、表语外,偶尔也可用作宾语补足语。
convenient的用法例句：1. There wasn't even a convenient place for students to assemble between classes.在课间，学生们连一个方便凑在一起的地方都没有。
2. "What time were you planning lunch?"—"Half past twelve, if that's convenient."“你打算什么时候吃午饭?”“如果方便的话，12点半。
”3. We cannot make this minority a convenient excuse to turn our backs.我们不能拿少数这几个人作为一种方便的借口而对此置之不理。
convert的用法和短语例句
convert的用法和短语例句convert它的中文意思有转变的意思，对于它的短语以及用法可会?以下是小编给大家带来convert的用法和短语及参考例句，以供参阅。
convert的用法convenient的用法1：convenient有两个意思:一是时间适合某人,二是附近的。
作适合某人解时,其主语是事或物而非人,表示主语具有适合某人的特征。
作附近的解时，常修饰distance等名词。
convenient的用法2：be convenient的意思是是合适的是方便的,在以表示事或物的名词作主语时,其后常接介词for或to引起的短语。
在动词不定式或that从句作主语时常采用形式主语结构,动词不定式的逻辑主体可由介词for引出。
convenient的用法3：convenient作附近的解时,如用作表语,其后常接介词for;如用作定语修饰distance,须用介词from短语，表示离近。
convenient的用法4：convenient在句中除用作定语、表语外,偶尔也可用作宾语补足语。
convert的常用短语convert into (v.+prep.)(使)转而变为change (sth) into (sth else)convert sth into sth用于be ～ed 结构convert to (v.+prep.)(使)改信,皈依(另一宗教) (cause to) change ones religion to (another religion)convert to sthconvert sb to sth(使)转而变为(cause to) change to (sth else)convert sb to sthconvert的用法例句 1. We would like to convert the loft into another bedroom.我们想把阁楼改造成又一间卧室。
2. He was a recent Catholic convert, and very zealous.他最近才皈依天主教，是一名狂热的信徒。
convenient 翻译
convenient 翻译
"Convenient"一词在英语中是一个形容词，表示“方便的”、“便利的”、“舒适的”等意思。
根据上下文不同，可能会有不同的翻译。
例如，在描述某个服务或设施的方便性时，可以将“convenient”翻译为“便捷的”、“方便的”、“实用的”等，以表达它的功能性特征。
如果用于形容时间或地点，也可以将“convenient”翻译为“适当的”、“方便的”等词汇，来强调它的合适性和便利性。
除了以上的基本翻译外，根据具体的语境和文体，还有很多其他的翻译方式。
例如，在文学作品中，可以将“convenient”翻译为“顺畅的”、“顺手的”等，以表达
更具诗意的意境。
在商务或科技领域，也可以将“convenient”翻译为“易用的”、“智
能化的”等，以强调它的先进性和高效性。
总之，“convenient”这个词在翻译时需要根据上下文和使用场景进行灵活处理，以确保翻译的准确性和表达的自然性。
convenience的短语
convenience的短语convenience表示方便，便利; 便利设施;的意思，那么你知道convenience的短语有哪些吗?接下来小编为大家整理了convenience 的短语搭配，希望对你有帮助哦!convenience的短语：at one's convenience在方便的时候,在适宜的地方 when and where it suits oneCome by to pick me up at your convenience.在你方便的时候来接我。
make a convenience of过分利用某人 use sb too muchSome patients make a convenience of nurses.有些病人过分利用护士们的热心服务。
convenience的短语例句：1. Like working women anywhere, Asian women are buying convenience foods.像其他地方的职业女性一样，亚洲女性也购买方便食品。
2. Frozen fish is a very healthy convenience food.冻鱼是非常健康的方便食品。
3. They may use a credit card for convenience.为了方便，他们可以使用信用卡。
4. I rely too much on convenience food.我太依赖方便食品了。
5. We have provided seats for the convenience of our customers.为方便顾客我们备有座位。
6. Come by to pick me up at your convenience.在你方便的时候来接我.7. We have to consult his convenience in a matter of this kind.对这样的事情,我们就听其自便吧.8. Please reply at your earliest convenience.请在您方便时尽早答复.9. Some patients make a convenience of nurses.有些病人过分利用护士们的热心服务.10. We did it for convenience's sake.我们为了方便起见才这么做.11. Please send her the book at your convenience.这本书,请你得便捎给她.12. He thinks only of his own convenience.他只想到本人的方便.13. Mail order is a convenience for buyers who are too busy to shop.邮购对于那些没有时间逛商店的购物者来说是一项非常方便的服务。
it's convenient用法
it's convenient用法什么是"it's convenient"？"It's convenient"是一种英语短语，意为"这很方便"。
它用于描述一种情况或事物，表示它对个人或群体来说是方便的或合适的。
这个短语常常会在日常生活中出现，无论是在工作场所、社交场合还是商业环境中，都可以听到人们使用它来表达自己的观点或讨论某种情况的便利程度。
"it's convenient"的用法"it's convenient"是一个常用的英语表达形式，它可以用于各种不同的场合。
以下是几种常见的用法和例句：1. 描述物理地点的便利程度：- "这个饭店离火车站很近，所以它很方便。
"("This restaurant is close to the train station, so it's convenient.")- "这座公园有很多停车位，所以来这里游玩很方便。
"("This park has a lot of parking spaces, so it's convenient to come here.")2. 描述工作或学习的便利程度：- "这家公司的办公室配备了现代化的设备和工具，使得工作很方便。
"("The office of this company is equipped with modern equipment and tools, making work convenient.")- "这所学校提供在线课程，这让学习对于全职工作的学生来说更加方便。
"("This school offers online courses, which makes studying more convenient for full-time working students.")3. 描述日常生活中的便利程度：- "我可以通过手机应用程序订购食品，这很方便。
convenient的用法和样例
convenient的用法和样例：用作形容词(adj.)Internet makes it convenient for us to get in touch with each other. 互联网使得我们相互联系便利了。
Please come whenever it is convenient to you.方便的时候,请随时来。
常见句型用作形容词(adj.)用作定语～+ n.A good toolbox is a convenient thing to have in the house.家里预备了一个好的工具箱就方便多了。
I have to find a convenient location for the shelves.我得找一合适的地方放这些书架。
She should dress in convenient clothes for cold weather.她应该穿适于寒冷天气穿的衣服。
This is a convenient tool for hair-cutting.这是一种极便利的理发工具。
The school is at convenient distance from my home.学校在我家附近。
The post office is at a convenient distance from our school.邮局离我们学校很近。
It is useful to have a convenient supermarket.附近有家超级市场实在方便。
n. +～We'll find a place convenient for lunch.我们要找一个近便的地方吃饭。
We'll find a place convenient for our get-together.我们要找一个方便聚会的地方。
用作表语S+be+～I can't see him now; it's not convenient.我现在不方便见他。
convenient用法及搭配
convenient用法及搭配Convenient is an adjective that means "easy to use" or "causing little trouble." It can be used in a wide variety of contexts, and it's an excellent word to know and use in your everyday language. In this article, we will explore the different ways you can use the word convenient and its common collocations.Step 1: General usageWhen you describe something as convenient, you're saying that it's easy to use, comfortable, and saves time. For example, a coffee maker that automatically brews fresh coffee every morning can be described as convenient. Similarly, a mobile phone with a large screen and long battery life can be described as convenient.Step 2: Collocations with "convenient"- Convenient time: A convenient time refers to a time that is suitable or convenient for someone. For instance, "Can we schedule a convenient time to meet next week?"- Convenient location: A convenient location is a place that is easily accessible and near to where you are or where you want to go. For example, "The hotel is in a convenient location near the train station."- Convenient store: A convenient store is a small retail shopthat sells basic everyday items and is open for extended hours, such as 24 hours. "We ran out of bread, so we stopped at the nearest convenient store to grab some."Step 3: Common phrases with "convenient"- Conveniently located: This phrase means that something is situated in a place that can be easily reached or conveniently accessed. For instance, "The new restaurant is conveniently located near my workplace."- Conveniently close: This phrase means that something is nearby or within close proximity to where you are. For example, "The park is conveniently close to my house."- Conveniently forget: This phrase means to purposely forget or ignore something out of convenience or to avoid trouble. "He conveniently forgot to mention that the car was damaged before he sold it to me."Step 4: Related words and synonyms- Easy: Something that is easy is convenient because it doesn't require much effort or time to get done.- Time-saving: If something is time-saving, it's convenient because it saves you time and effort.- Practical: Something that is practical is convenient because it's useful and easy to use in everyday life.- Handy: If something is handy, it's convenient to have because it's easy to access and use.In conclusion, convenient is a versatile word with various uses and collocations. It's essential to know these phrasesto be able to use it in everyday language and communication effectively. Remember that using convenient correctly can help you communicate more clearly and effectively.。
convenient的用法和样例讲解学习
c o n v e n i e n t的用法和样例convenient的用法和样例：用作形容词 (adj.)Internet makes it convenient for us to get in touch with each other. 互联网使得我们相互联系便利了。
Please come whenever it is convenient to you.方便的时候,请随时来。
常见句型用作形容词 (adj.)用作定语～+ n.A good toolbox is a convenient thing to have in the house.家里预备了一个好的工具箱就方便多了。
I have to find a convenient location for the shelves.我得找一合适的地方放这些书架。
She should dress in convenient clothes for cold weather.她应该穿适于寒冷天气穿的衣服。
This is a convenient tool for hair-cutting.这是一种极便利的理发工具。
The school is at convenient distance from my home.学校在我家附近。
The post office is at a convenient distance from our school.邮局离我们学校很近。
It is useful to have a convenient supermarket.附近有家超级市场实在方便。
n. +～We'll find a place convenient for lunch.我们要找一个近便的地方吃饭。
We'll find a place convenient for our get-together.我们要找一个方便聚会的地方。
用作表语S+be+～I can't see him now; it's not convenient.我现在不方便见他。
convenient 的用法
一、convenient 的含义convenient 是一个英文形容词，表示“方便的”，“便利的”。
它可以用来描述时间、地点、事物或因素等，符合相关情境的需求，使人们感到方便，能够轻松地完成某项任务或活动。
二、convenient 的用法1. convenient 作为形容词修饰名词例如：a convenient location（便利的地点）；a convenient time （合适的时间）；a convenient store（便利店）。
2. convenient 作为形容词修饰动词例如：It is convenient to have a car in the suburbs（在郊区拥有一辆车是很方便的）；It is not convenient to talk during the meeting（在会议期间讲话并不方便）。
3. convenient 作为形容词修饰副词例如：She arrived at a convenient time（她在一个合适的时间到达了）。
4. convenient 作为形容词修饰形容词例如：The hotel has convenient andfortable facilities（该酒店设施便利且舒适）。
5. convenient 作为形容词修饰从句例如：It is convenient that you live close to the office（你住得离办公室近很方便）。
三、convenient 的常见搭配1. convenient time/place/way/option例如：a convenient time（合适的时间）；a convenient place （便利的地点）；a convenient way（便捷的方式）；a convenient option（方便的选择）。
2. convenient for sb例如：It's not convenient for me toe at that time（我那时候不方便来）。
convenient的用法
convenient的用法（最新版）编制人：__________________审核人：__________________审批人：__________________编制单位：__________________编制时间：____年____月____日序言下载提示：该文档是本店铺精心编制而成的，希望大家下载后，能够帮助大家解决实际问题。
文档下载后可定制修改，请根据实际需要进行调整和使用，谢谢!并且，本店铺为大家提供各种类型的经典范文，如词性大全、句法大全、句型大全、从句大全、时态大全、语态大全、语法大全、虚拟语气、用法辨析、其他资料等等，想了解不同范文格式和写法，敬请关注!Download tips: This document is carefully compiled by this editor.I hope that after you download it, it can help you solve practical problems. The document can be customized and modified after downloading, please adjust and use it according to actual needs, thank you!In addition, this shop provides you with various types of classic sample essays, such as part of speech, syntax, sentence pattern, clause, tense, voice, grammar, subjunctive, usage analysis, other materials, etc. If you want to know the different formats and writing methods of the model essay, please pay attention!convenient的用法convenient的用法1：convenient有两个意思:一是“时间适合某人”,二是“附近的”。
convenience可数吗？_名词 英语语法.doc
convenience可数吗？_名词一、当convenience 表示抽象意义的方便合宜时，它是不可数名词。
如：What sells CDs to most people is convenience. 多数人买CD是图个方便。
The hotelcombines comfort with convenience. 这家旅店既舒适又方便。
二、当convenience 表示以下具体意思时，它则是可数名词：(1) 表示具体的便利设施方便用具等，则可数。
如：They wouldn’t like to live without modern conveniences such as microwaves. 他们不愿过那种没有微波炉之类现代化便利设施的生活。
用于惯用表达as a convenience (to sb)，意思是为方便（某人），与for (sb’s) convenience 大致同义。
又如：we group them intospecies merely as a convenience. 我们将其分类只是为了方便。
Thesupermarket offers a bag-packing service, as a convenience to customers. 为方便顾客，这家超市提供袋装服务。
(2) 表示方便的事，也是可数名词。
如：It’s a great convenience living next door toa post office. 住在邮局隔壁极为方便。
(3) 表示（公共）厕所，是可数名词。
如：There is a public convenience on the cornerof the street. 在街道的拐角处有公共厕所。
if it is convenient的用法
if it is convenient的用法"If it is convenient" 的用法"if it is convenient" 是一个常用的英语短语，用于礼貌地询问或建议对方是否方便做某事。
这个短语在正式和非正式场合中都可以使用，它表达了对对方时间和计划的尊重。
在口语中，"if it is convenient" 经常用于以下几种情况：1. 邀请: 当你想邀请别人做某事时，可以使用这个短语来表示你希望别人可以根据自己的时间安排来决定是否接受邀请。
例如："If it is convenient for you, could you join us for dinner tomorrow night?"2. 提问: 当你需要询问别人的事情时，使用"if it is convenient" 可以表达你的尊重和礼貌。
例如："Could you please let me know, if it is convenient, when the meeting will take place?"3. 安排会面: 当你希望与某人安排一个会议或面试时，使用这个短语可以表达你的灵活性和考虑对方的时间安排。
例如："I would like to discuss this matter further. If it is convenient for you, could we meet sometime next week?"需要注意的是，尽管"if it is convenient" 是一种礼貌用语，但在一些正式场合或与上级交谈时，可能需要使用更正式和更客气的表达方式，如："If it is not too much trouble" 或 "If it is not inconvenient for you."总之，"if it is convenient" 是一种常用的英语短语，用于礼貌地询问或建议对方是否方便做某事。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
外教一对一
convenient 的用法与搭配
1. 无论表示“便利的”“不远的”，还是表示“方便的”“合适的”，均可与介词 for, to 连用。
如：
Our school is convenient for [to] the station. 我们学校离车站很近便。
If it is convenient for [to] you, we’ll come tomorrow. 如果你方便的话，我们就明天来吧。
2. convenient的实际意思是“使人感到方便的”，而不是“(自己)感觉到方便的”，所以它的主语通常不能是人。
如：Railway is convenient. 铁路方便。
比较：
误：I’ll come if you are convenient.
正：I’ll come if it is convenient for [to] yo u. 你若方便，我就来。
3. 其后可接不定式，但句子应带有形式主语或形式宾语 it。
如：
I think it convenient to leave at once. 我认为马上离开较适合。
Will it be convenient for you to start work tomorrow? 明天就开始工作你觉得方便吗?
有时也可能没有形式主语，而用“人”或“物”作主语，但此时句子的主语必须是其后不定式的逻辑宾语。
如：
Mary is convenient to see on Sunday. = It’s convenient to see Mary on Sunday. 星期天见玛丽较为方便。
The furniture is convenient to move. = It is convenient to move the furniture. 这家具搬起来很方便。
外教一对一。