学习工具
英:/twaɪs/ 美:/twaɪs/
两次
初中,高中,CET4,CET6,考研
adv. 两次；两倍
This is a semimonthly magazine, which means it is published twice a month.
这个杂志是半月刊，即一个月出版两本。
His salary is twice as much as mine.
他的工资是我的两倍。
I advise you to think twice before dropping out of school to work.
我劝你在辍学去打工前三思。
The state is at least twice as big as England.
这个州至少是英格兰的两倍大
He feeds his dog twice a day.
他每天喂两次狗。
I dress up twice per year.
我一年会盛装打扮两次。
My friend had to charge her phone battery twice yesterday because she used it all day.
我朋友的手机要一天充两次电，因为她整天都在用。
I swiped my card twice before I realized it was the wrong one.
我刷了两次卡，然后意识到不是这张卡。
In many Western countries, people get paid twice a month.
在许多西方国家，人们一个月拿两次工资。
I walk my dog twice a day.
我每天遛两次狗。
I was late twice last month, so my boss deducted money from my salary.
上个月我迟到了两次，老板扣了我工资。
I went to Anna's house twice last week.
上周我去了Anna家两次。
A: How often do you eat noodles? B: Twice a week.
A：你多久吃一次面条？ B：一周两次。
I try to go back home twice every year.
我尽量每年回家两次。
She gets paid twice a month: on the 1st and 15th of the month.
她每月拿两次薪水：每月的1号和15号。
I play once or twice a week. What do you do on weekends?
一周一两次。你周末一般都做什么？
I go home twice a year, so I see them then.
我一年回家两次，那个时候看他们。
She charges 20 RMB per hour. She can come once or twice a week.
她一小时收费20，她一周可以来一到两次。
Probably twice a week. Once on a weekday and once on weekends.
大概一周两次。工作日一次，周末一次。
Well, I have lectures twice a week and class discussion once a week via video.
嗯，我每周有两次讲座，每周通过视频进行一次课堂讨论。
She's backpedalled twice already.
她已经两次改变主意了。
I go swimming twice a week.
我每星期游泳两次。
The villa is cleaned twice a week.
这栋别墅一周打扫两次。
Cats sleep twice as much as people.
猫睡觉的时间比人长一倍。
I visited once or twice.
我参观过一两次。
twice a week
每周两次
think twice
再三考虑；重新考虑
think twice about something
三思而后再决定做某事
think twice about
仔细考虑，重加考虑
at twice
adv. 在第二次时；分两次
"twice" 是英语中表示数量关系的副词，核心含义为两次或两倍。该词源自古英语"twiga"（双重）和中古英语"twies"（两次）的演变，现广泛应用于日常生活、数学计算和文学表达三大领域。
在基础用法中，"twice" 用于描述重复发生的动作频次，例如："The committee meets twice a month"（委员会每月召开两次会议）。此时其强调精确的数量关系，区别于"again"（再次）的模糊性表述。根据《牛津英语词典》释义，作频度副词时其数值优先级高于"often"而低于"thrice"。
数学语境下，"twice" 对应乘法运算公式：
$$
2 times x = text{twice }x
$$
该用法在商业场景尤为常见，如"twice the original price"（原价的两倍）。《剑桥英语语法指南》特别指出，当与比较级连用时需保持结构完整，如正确表述应为"twice as expensive as"而非"twice more expensive"。
文学创作中，该词常构成隐喻性表达。莎士比亚在《第十二夜》中写有"Journeys end in lovers meeting, Every wise man's son doth know. What is love? 'Tis not hereafter; Twice as sweet as answer'd groans"，此处"twice"既强化情感浓度又形成韵律节奏。
该词存在多个近义词但语境适用性不同："double"侧重数量翻倍，"twofold"多用于抽象概念，"bis"属专业术语常见于乐谱指令。语言学家David Crystal在《英语的故事》中强调，现代英语中"twice"在口语使用频率是"two times"的3.2倍。
词性：副词
发音：
次数表达：
倍数关系：
搭配结构：
习语与固定短语：
语法限制：
次数用法：
倍数用法：
习语场景：
| 词汇 | 释义 | 场景 |
|---|---|---|
| once | 一次 | 频率表达（once a day） |
| thrice | 三次 | 古英语用法，现较少见 |
| double | 双倍的 | 形容词或动词（double the recipe） |
| half | 一半 | 对比倍数（half as much） |
如需进一步了解数词用法（如基数词、序数词），可参考数词分类指南。
investigation reportinvestigative reportinginvesting activitiesinvestment adviserinvestment advisorinvestment bankinvestment bankerinvestment bankinginvestment climateinvestment corporationinvestment environmentinvestment fundinvestment ininvestment portfolioinvestment promotioninvestor confidenceinvestor relationsinvincible positioninvisible assetsinvisible handinvisible inkinvisible tradeinvisible zipperinvitation cardinvitation for bidinvitation letterinvitation to bidinvitational tournamentinvite public biddinginvoice amount
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