since是什么意思

短语搭配

(1)ever since此后一直, 自…以来直至现在

(2)since then此后；自此；从那时以来

(3)since the rinderpest很久以前

(4)be the best thing since sliced bread最好的东西

(5)be the greatest thing since sliced bread最好的东西

(6)since that time自那时以来；尔后；自那时起

(7)long since长久以来；长时间以来；从前

(8)even since自从；从那以后

双语例句

(1)She hasn't been to school since Monday.

她从星期一起就没上学了。

(2)The shop has been closed long since.

这家商店早就关门了。

(3)I will not leave you since you are the one I love the most.

我不会离开你因为你是我最爱的人。

(4)Since we've got a few minutes to wait for the train, let's have a cup of coffee.

既然等火车还需要几分钟 我们去喝杯咖啡吧

(5)I've been very busy since I came back from holiday.

我自从度完假回来后就一直很忙

(6)It's been 6 months since my brother graduated from college. He still hasn't found a job yet.

我弟弟大学毕业已经6个月了。但是他现在还没找到工作。

(7)We have been out of water since yesterday.

从昨天起，我们就没水了。

(8)The automobile companies have accumulated red ink since the US dollar rose.

汽车公司自美元升值以来逐渐出现赤字情况。

(9)How long is it since you got married?

你结婚多久了？

(10)They have been eating since 5pm.

他们从下午五点就开始吃了。

(11)He has lived in Chicago since he was 2 years old.

他从两岁开始就住在芝加哥了。

(12)I have been wanting to see that movie since it came out.

电影一上映我就一直想去看。

(13)She has been working since she arrived.

她一到就工作到现在。

(14)We've lived here since 1994.

自1994年以来我们一直住在这里。

(15)I haven't binged since 1986.

我从1986年以来从未放纵过自己。

(16)She's been off work since Tuesday.

星期二以来她一直没上班。

(17)Polling has been heavy since 8 a.m.

从早上8点以来投票很踊跃。

同义词

conj. 因为；由于；既然；自…以来；自…以后

adv. 后来

单词辨析

因为

(1)because 从属连词，语意强，着重直接的原因或理由，所引出的从句是全句的重心，用以回答why提出的问题。

(2)for 并列连词，语气较弱，所引出的句子一般放在后面，表示附带说明的理由或推断理由。

(3)as 从属连词，语意较because, since弱，着重在主句，所表示的原因或理由是“附带的”。

(4)since 语意比because弱，但比as强，一般用于表示“由于大家已知的事实”。

释义

preposition, conjunction, & adverb

in the intervening period between (the time mentioned) and the time under consideration, typically the present

自从；从那以后，此后

[as prep.]she has suffered from cystic fibrosis since 1984

她自１９８４年起，就得了囊肿性纤维化病

the worst property slump since the war

自战争以来最严重的房地产衰退

[as conjunction]I've felt better since I've been here

自从我来到这儿后，感觉好多了

[as adv.]she ran away on Friday and we haven't seen her since.

她星期五逃走了，自那以后我们再也没有看见她。

[conjunction]for the reason that; because

既然；因为

delegates were delighted, since better protection of rhino reserves will help protect other rare species.

代表们很高兴，因为对犀牛保护区的更好保护将有助于保护其他珍稀物种。

[adverb]ago

之前，以前

the settlement had vanished long since .

这个小居民点很久以前就消失了。

易错必背词

since + 时间点 自从...时候开始

(1)Since 1994, the day has been celebrated on the 5th of October, the sane day as World Teachers' Day.

自1994年以来，这一天一直在10月5日庆祝，与世界教师节同一天。[贵港市 2021 中考 阅读理解]

(2)Since March 2012, I've done 89 trips of those, 51 have been abroad.

自2012年3月以来，我已经进行了89次这样的旅行，其中51次是在国外。[全国卷 2016 高考 阅读理解]

ever since 此后一直

(1)And Peter Pan has been very famous around the world ever since.

从那以后，彼得潘在全世界都非常有名。[广安卷 2021 中考 任务型阅读]

since then 自那以后

(1)I saw Julia in April and I haven't seen her since then.

我在四月份见过朱莉娅，从那以后就再也没见过她。[南京卷 2021 中考 单项填空]

(2)I was to learn a lot about camping since then, however.

然而，从那以后，我学到了很多关于露营的知识。[全国卷I 2017 高考 阅读理解]

ever since 此后一直

(1)The author has had happy summers ever since.

从那以后，作者度过了许多快乐的夏天。[天津卷 2015 高考 阅读理解]

词源

"late Middle English： contraction of obsolete sithence, or from dialect sin （both from dialect sithen ‘thereupon, afterwards, ever since’）．"

考纲分布

近6年出现394次

重要程度: 5星

80%; conj/prep/adv 自从; 此后

20%; conj 因为

考纲释义

( 1)conj/prep/adv. 自从; 此后

英文释义：from that time

真题例句：

Since it will be rainy tomorrow, we have to choose a different time to go jogging．

由于明天会下雨，我们必须选择其他时间去慢跑。[2019年 南京市卷 阅读理解]

However, since we now live in a worldwide society, people's views about beauty are always changing.

然而，由于我们现在生活在一个全球化的社会中，人们对美的看法总是在变化。[2018年 杭州市卷 词汇检测]

Valentine's Day has nothing to do with me since I am a single dog.

情人节与我无关，因为我是单身狗。[2018年 山西省卷 听力]

( 2)conj. 因为

英文释义：given that

真题例句：

Life hasn't changed much for cowboys since the early days.

从早期开始，牛仔的生活就没有太大改变。[2020年 江西省卷 任务型阅读]

You've been learning words since you were a tiny baby.

你从很小的时候就开始学习单词了。[2020年 青岛市卷 任务型阅读]

Bob and Jim have been good friends since they joined the same tennis team．

鲍勃和吉姆自从加入同一个网球队以来就是好朋友。[2019年 南宁市卷 阅读理解]

必考短语

(1)ever since此后一直；自…以来直至现在

(2)since then此后；自此；从那时以来

用法讲解

since+时间点，表示“自从...时候开始”，要求谓语动词用现在完成时，而且必须是延续性动词。 示例：I have stayed in that country since 1995. 从1995年以来，我就在那个国家了。

since+一段时间+ago，表示“从...时间以前”，要求谓语动词用现在完成时，而且必须是延续性动词。 示例：They have lived in that house since two years ago. 两年前他们就住在那座房子里了。

since+从句，表示“从...以来”，要求主句谓语动词用现在完成时，而且必须是延续性动词；从句谓语动词用一般过去时，而且是终止性动词。 示例：Lily has stayed at home since she left school. 莉莉离开学校之后就一直呆在家里。

It is/ has been +一段时间+since从句，意为“自从……以来已经（多久）了”。 示例： It has been three months since he moved to this city. 他搬到这个城市已经三个月了。

考纲分布

近12年出现51次

重要程度: 5星

71%; conj/n 自从

29%; conj/n 因为

0%; adv 后来

考纲释义

( 1)conj/n. 自从

英文释义：from that time

真题例句：

Since I was a kid, I`ve considered different jobs I would like to do.

当我还是个孩子的时候，我就考虑过做不同的工作。[2019年 全国卷2 改错]

It's been three weeks since he first started going, so Macy and I are pretty used to it now.

距离他第一次离开已经有三周了，所以梅西和我现在已经很习惯了。[2018年 全国卷3 听力]

Since 1958, they have been recognized as the national theatre of Israel.

自1958年以来，它们被公认为以色列的国家剧院。[2017年 全国卷2 阅读理解]

We haven't had any guests since we moved in here.

自从我们搬进来后，家里就没有客人来拜访。[2016年 全国卷3 听力]

( 2)conj/n. 因为

英文释义：given that

真题例句：

So a common language is required and in postcrossing that's English since it's widely spoken.

所有我们需要一种通用的语言，在postcrossing网站中就是指英语，因为它被广泛使用。[2021年 浙江卷 七选五]

Since the effects were small, this may suggest that our creative thinking does not differ that much.

由于效果很微小，这可能表明我们的创造性思维没有太大差异。[2021年 全国乙卷 阅读理解]

Unfortunately, you must carry the necessary equipment with you, since it's all but impossible to find natural substitutes.

不幸的是，你必须随身携带必要的设备，因为几乎不可能找到天然的替代品。[2017年 全国卷1 阅读理解]

( 3)adv. 后来

英文释义：at some time in past

必考短语

(1)ever since自从

(2)since then自那以来

考纲分布

近9年出现84次

重要程度: 5星

95%; conj/n 自从

4%; conj/n 因为

1%; adv 后来

考纲释义

( 1)conj/n. 自从

英文释义：from that time

真题例句：

Schools and teachers have consistently reported the scale of the problem since 2009.

自2009年以来，学校和教师一直在报告问题的严重程度。[2020年 CET4 阅读理解C]

Since the beginning of this century, an increasing amount of time has been shifted in public schools from recess to academic activities.

自本世纪初以来，公立学校越来越多的时间从课间休息转移到学术活动上。[2020年 CET4 阅读理解B]

Well, ever since Sandra left the department, I feel like I've been targeted to do all her work, as well as mine.

自从桑德拉离开了这个部门，我觉得除了我自身的工作外，我还承担了她的工作量。[2016年 CET4 听力]

( 2)conj/n. 因为

英文释义：given that

真题例句：

Since my overall style was quite minimal, I thought and hoped a whole renovation wouldn't be too difficult.

由于我的整体风格非常简单，我认为并希望整个翻新不会太难。[2020年 CET4 听力]

Most of them engage with potential donors, since projects that answered questions from interested donors fared better. And they target a small amount of money.

他们中的大多数都与潜在捐助者进行接触，因为回答感兴趣的捐助者问题的项目进展得更好。并且他们的目标金额不多。[2019年 CET4 阅读理解]

The researchers argued that breakfast helps reduce daily calorie intake and improve the quality of our diet — since breakfast foods are often higher in fibre and nutrients.

研究人员认为，早餐有助于减少每日卡路里的摄入量，改善我们的饮食质量，因为早餐吃的东西往往含有更高的纤维含量和营养成分。[2019年 CET4 阅读理解]

( 3)adv. 后来

英文释义：at some time in past

真题例句：

We haven't heard from him since.

后来我们就没有他的消息了。[2021年 CET4 听力]

A vertical solar project on such a large scale has never been repeated since.

如此大规模的垂直太阳能项目从那以后再也没有出现过。[2018年 CET4 阅读理解]

必考短语

(1)ever since此后一直; 自...以来直至现在

(2)since then此后; 自此; 从那时以来

用法讲解

It is/ has been +一段时间+since从句，意为“自从……以来已经（多久）了”。 示例： It has been three months since he moved to this city. 他搬到这个城市已经三个月了。

since+从句，表示“从...以来”，要求主句谓语动词用现在完成时，而且必须是延续性动词；从句谓语动词用一般过去时，而且是终止性动词。 示例：Lily has stayed at home since she left school. 莉莉离开学校之后就一直呆在家里。

since+时间点，表示“自从...时候开始”，要求谓语动词用现在完成时，而且必须是延续性动词。 示例：I have stayed in that country since 1995. 从1995年以来，我就在那个国家了。

since+一段时间+ago，表示“从...时间以前”，要求谓语动词用现在完成时，而且必须是延续性动词。 示例：They have lived in that house since two years ago. 两年前他们就住在那座房子里了。

考纲分布

近9年出现78次

重要程度: 5星

85%; conj/n 自从

13%; conj/n 因为

3%; adv 后来

考纲释义

( 1)conj/n. 自从

英文释义：from that time

真题例句：

Ever since America's colonial days, the Caribbean islands have been favorite places to visit.

自从美国殖民时期以来，加勒比群岛一直是人们最喜欢去的地方。[2021年 CET6 听力]

Since World War Ⅱ, tourism has increased rapidly.

二战以来，旅游业迅速增长。[2021年 CET6 听力]

The growth in public agricultural research spending peaked in the 1970s and has been shrinking ever since.

公共农业研究支出的增长在20世纪70年代达到顶峰，此后一直在萎缩。[2021年 CET6 听力]

( 2)conj/n. 因为

英文释义：given that

真题例句：

Joseph's top priority became getting his hands on enough grass-fed milk to keep customers satisfied, since his own 64-cow herd wasn't going to suffice.

Joseph 的当务之急是获得足够的草饲牛奶来让顾客满意，因为他自己的64头奶牛群还不够用。[2019年 CET6 阅读理解]

Best Buy has been bearing the lion's share of e-waste volume since its largest competitors do not have their own recycling programs.

由于它最强劲的对手们都没有自己的回收项目，百思买在电子垃圾回收项目中一直扮演着“领头羊”的角色。[2019年 CET6 阅读理解]

Since the former (acquaintances) is most common among those inclined towards indifferent relationships, their predominance can bolster individuals' sense of self-worth.

因为前者(熟人)更多的是“冷漠关系”的拥护者，这一优势有助于增强个体的自我价值感。[2019年 CET6 阅读理解]

Especially since journalism is one job robots will never do.

特别是由于新闻业是机器人将永远做不到的工作。[2018年 CET6 阅读理解]

Since a change in the course of action can sometimes be important and lead to a positive outcome.

因为行动过程中的改变有时是重要的，能带来积极的结果。[2018年 CET6 阅读理解]

At this time there is nothing to take action on since the analysis has yet to be completed.

由于尚未完成分析，因此目前没有采取任何行动。[2017年 CET6 阅读理解]

( 3)adv. 后来

英文释义：at some time in past

真题例句：

She has since worked with another high-profile, luxury label.

此后，她又与另一家知名奢侈品牌合作。[2021年 CET6 阅读理解B]

Social networks, though, have since colonized the web for television's values.

不过，社交网络从此为电视的价值开拓了网络。[2021年 CET6 阅读理解C]

必考短语

(1)ever since此后一直; 自...以来直至现在

用法讲解

since+时间点，表示“自从...时候开始”，要求谓语动词用现在完成时，而且必须是延续性动词。 示例：I have stayed in that country since 1995. 从1995年以来，我就在那个国家了。

since+一段时间+ago，表示“从...时间以前”，要求谓语动词用现在完成时，而且必须是延续性动词。 示例：They have lived in that house since two years ago. 两年前他们就住在那座房子里了。

since+从句，表示“从...以来”，要求主句谓语动词用现在完成时，而且必须是延续性动词；从句谓语动词用一般过去时，而且是终止性动词。 示例：Lily has stayed at home since she left school. 莉莉离开学校之后就一直呆在家里。

It is/ has been +一段时间+since从句，意为“自从……以来已经（多久）了”。 示例： It has been three months since he moved to this city. 他搬到这个城市已经三个月了。

考纲分布

近16年出现64次

重要程度: 5星

89%; conj/prep/adv 自从; 此后

11%; conj/prep/adv 既然; 因为

考纲释义

( 1)conj/prep/adv. 自从; 此后

英文释义：from that time

真题例句：

I've found quite a few, and—since I started posting them on Twitter—they have been causing quite a stir.

我发现了很多，而且——自从我开始在推特上发布它们——它们已经引起了不小的轰动。[2021年 英语一 阅读理解A]

By most measures, corporate governance has become a lot tighter and more rigorous since the 1970s.

从大多数指标来看，自20世纪70年代以来，公司治理变得更加严格。[2020年 英语二 阅读理解A]

I've been able to do this since I was four.

我自从四岁开始就能做到这一点。[2013年 英语二 翻译]

( 2)conj/prep/adv. 既然; 因为

英文释义：given that

真题例句：

Since weight loss is not my goal, it is less important for me to track my weight each week.

因为减肥不是我的目标，所以每周跟踪体重对我来说不太重要。[2019年 英语二 完型填空]

The ruling is a victory for big chains with a presence in many states, since they usually collect sales tax on online purchases already.

这项裁决对在许多州都有业务的大型连锁店来说是一次胜利，因为他们通常已经对网上购物征收销售税了。[2019年 英语一 阅读理解A]

Now we can understand each other's positions and recognize our shared values, since we both care about needy workers.

现在我们可以理解彼此的立场，并认识到我们共同的价值观，因为我们都关心贫困的工人。[2019年 英语一 阅读理解B]

必考短语

(1)since then此后；自此；从那时以来

用法讲解

表示“（时间）持续”时，since和for都可与表示时间的词连用。 (1) for后跟一段时间，表示某事进行了多长时间， 例：She slept for eight hours. 她睡了8个小时。 (2) since后多接某一时间点，表示某事开始的时间。 例：She has been with the group since it began. 这个集团创建之初她就在那里工作。

表示“因为”时： since：当所述原因是已知的客观事实或被当作推断的理由时用since，语气略强于 as。 because：语气最强，表因果关系，通常用来回答由why引导的疑问句。由because引导的分句置于句首时，须用逗号与主句隔开，置于句末时则不用隔开。如所述理由是明显或已知的，则用as较because更为合适。 for：属于并列连词，由它引导的分句表示补充说明性的理由，通常只能置于句末，且必须用逗号与前面的分句隔开。

(1)Since when do you take after dinner walks? Yeah, since when do you take walks?

你什么时候开始饭后散步了？你什么时候开始散步了？《The Big Bang Theory Season 3》《生活大爆炸 第三季》

(2)Oh, I don't do blueberries. Me neither. Since when? Since now.

我不吃蓝莓。我也不吃。你啥时候开始不吃了？今天开始。《This Is Us Season 1》《我们这一天 第一季》

(3)And for the first time since the 1990s, American manufacturing is steadily adding jobs over 700,000 since 2010.

美国的制造业也自上个世纪90年代以来首次增加就业机会，自2010年以来为70多万人提供了就业岗位。《Your Weekly Address》《奥巴马每周电视讲话》

(4)Not since my cop show got canceled.

我的警察戏镜头被取消之后就没有过了。《Friends Season 10》《老友记 第十季》

(5)He just seems different since we got here.

他跟我们刚到这的时候不一样。《Jupiter Ascending》《木星上行》

(6)Since when can't you open up with me?

你从什么时候开始没法对我敞开心扉了?《The Big Bang Theory Season 7》《生活大爆炸 第7季》

(7)But, everything is different now. Since we moved.

可是，自从我们搬到这里后，一切都不一样了。《Inside Out》《头脑特工队》

(8)He's been working for North Korea since 1996.

他从96年起就为朝鲜效力。《Sherlock Season 3》《神探夏洛克 第三季》

(9)Like he's been doing since he got here.

打从他上太空，就没少"来"过。《The Big Bang Theory Season 6》《生活大爆炸 第六季》

(10)How long since you've seen a girl naked?

你上次看到裸女是什么时候的事？《Friends Season 8》《老友记 第八季》

(11)But while our businesses are creating jobs at the fastest pace since the 90s, the typical family hasn't seen a raise since the 90s also.

但当我们的经济自90年代以来以最快的速度创造着就业岗位，一个典型的家庭却自90年代以来从未看到工资的上涨。《Your Weekly Address》《奥巴马每周电视讲话》

(12)Self-medicating ever since. Which I applaud. Not a threat.

我估计她就是从那时起对吗啡上了瘾，不擅长打斗。《The Hunger Games: Catching Fire》《饥饿游戏2：星火燎原》

(13)Well, not anymore since you threw it out the window.

呃，他现在弹不了了，因为你把他的吉他扔到窗外面了。《Like Sunday, Like Rain》《如晴天，似雨天》

(14)But since then, he's been displaying incredible signs of intelligence.

但自那个时候起他就显示出惊人的高智力水平。《Rise of the Planet of the Apes》《猩球崛起》

(15)Have you felt that at all? Since you became a mother?

你有过这种感觉吗，自从你成为母亲？《House of Cards Season 3》《纸牌屋 第三季》

(16)You selfish girl! This union has been planned since their infancy.

你真是自私，这门婚事从他们小时候就已经定下来了。《Pride & Prejudice》《傲慢与偏见》

(17)Since when does drunk and disorderly get this much attention?

什么时候起你这么关注醉酒闹事了？《Gossip Girl Season 1》《绯闻女孩 第一季》

(18)Emily has probably been planning it since she was five. Ever since the first time she took a pillowcase and hung it off the back of her head.

艾蜜莉可能从5岁就在计划了，从她第一次把枕头套披在头上开始。《Friends Season 4》《老友记 第四季》

(19)And since Hunley shut us down, they've been escalating unchecked.

自从亨利解散了我们部门后，这个组织就越加猖狂。《Mission Impossible: Rogue Nation》《碟中谍5：神秘国度》

(20)You mean since gossip girl published pictures of him and some skank?

你是说自从"八卦天后"公开了他和某个女人的照片？《Gossip Girl Season 1》《绯闻女孩 第一季》