because
Longman Dictionary of Contemporary English 5++LDOCE 5++be·cause1 /bɪˈkɒz, bɪˈkəz $ bɪˈkɒːz, bɪˈkəz/ ●●● S1 W1 conjunction 1 BECAUSEused when you are giving the reason for something 因为 We didn’t enjoy the day because the weather was so awful. 那天我们很不尽兴，因为天气实在太糟。 ‘Why can’t I go?’ ‘Because you’re not old enough.’ “我为什么不能去？”“因为你年纪太小。” Hubert never experienced any fear, and this was partly because he was not particularly intelligent. 休伯特从来都没有害怕的感觉，部分原因是他这人不大聪明。 Many exam candidates lose marks simply because they do not read the questions properly. 许多应试者失分只是因为没有好好地读题。 I decided to go with them, mainly because I had nothing better to do. 我决定和他们一起去，主要是因为我没有更好的事情可做。2 just because ... spokenREASON used to say that, although one thing is true, it does not mean that something else is true 仅仅因为… Just because you’re my brother doesn’t mean I have to like you! 你是我兄弟，那也不代表我一定得喜欢你呀！n GRAMMAR: Comparisonbecause • You use because at the beginning of a clause, when giving the reason for something: I was late because the traffic was bad.• In formal written English, don’t use because at the beginning of a sentence.because of• You use because of before a noun, when giving the reason for something: I was late because of the traffic. ✗Don’t say: because the traffic THESAURUSbecause conjunction used when giving the reason for something 因为，由于I went home because I was tired. 因为累了，我就回家了。The streets were flooded because of all the rain. 下了这么多雨，街道被水淹了。due to/owing to preposition used to give the reason why something has happened. Due to and owing to are more formal than because 因为，由于〔due to和owing to比 because正式〕The delay was due to a problem with the ship’s engines. 误点是因为船的引擎出了问题。The parade had to be cancelled owing to bad weather. 由于天气不好游行活动只得取消了。through preposition because of something. Through is used especially when saying why someone succeeded or failed to do something 由于，因为〔尤用于说明某人成功或失败的原因〕They won the game, more through luck than skill. 他们赢了这场比赛，更多是靠运气而不是技巧。You failed that test through carelessness. 你没能通过那次测验是因为粗心大意。thanks to preposition used when explaining that something good has happened because of someone’s efforts, or because something exists 归功于，多亏〔用于解释某件好事的发生是由于某人的努力或某事物的存在〕Thanks to modern medicine, the disease can now be cured. 有赖于现代医学，这种疾病现在可以治愈了。since/as conjunction used when giving the reason why someone decides to do something or decides that something is true 因为，由于〔用于解释某人为何决定做某事或认为某事属实〕We decided to go to the beach since it was a nice day. 由于天气晴朗，我们决定去海滩。I thought Kevin was out as his car wasn’t there. 我想凯文出去了，因为他的车不在那里。out of preposition because of a particular feeling or quality 出于，因为〔某种感情或品质〕He started reading the book out of curiosity. 他开始读那本书是出于好奇。I only asked out of politeness. 我只是出于礼貌问了一问。
Examples from the Corpus
because• You mean you dumped him just because he forgot your birthday?• Mark couldn't come because he had to work.• She's in a bad mood because her father won't let her go to the party tonight.• "This photograph doesn't look like you." "That's because it isn't me - it's my sister".• I had to move because of my job.• Because of the increase in street crime, many old people are afraid to leave their homes.• She's studying because she has a test tomorrow.• We're not going on holiday this year, simply because we can't afford it.• Because you've done such a good job, I'm giving everyone a 10% bonus.partly because• The room was restful partly because it was anonymous.• In Kuala Lumpur, prices slipped, partly because most foreign investors were sidelined.• Expense rose to $ 1. 04 billion from $ 976 million, partly because of the First Fidelity acquisition.• I think this is partly because, on some level, we all internalize the myths of our own culture.• This is partly because people, and their pains, do not respond equally to a particular drug.because2 ●●● S1 W1 preposition because of somebody/something used to say who or what causes something to happen or is the reason for something 因为某人/某事物 He had to retire because of ill health. 他因为健康问题不得不退休。 We spent three hours waiting in the rain because of you! 因为你，我们在雨里等了三个小时！ RegisterIn written English, people often prefer to use the expressions due to something, owing to something, or as a result of something, which sound more formal than because of something: 在书面英语中，人们往往更喜欢用due to，owing to或as a result of，这些表达法听起来比because of正式Many businesses fail due to cash-flow problems. 许多企业因为现金流转出了问题而倒闭。Origin because (1300-1400) by cause (that)be·cause1 conjunction →n GRAMMAR1 →THESAURUS1because2 preposition →REGISTER1LDOCE OnlineChineseSyllable
reason for used when you the Corpus something are giving
because
be‧cause1 S1 W1 /bɪˈkɒz, bɪˈkəz $ bɪˈkɒːz, bɪˈkəz/ 
conjunction
We didn’t enjoy the day because the weather was so awful.
‘Why can’t I go?’ ‘Because you’re not old enough.’
Hubert never experienced any fear, and this was partly because he was not particularly intelligent.
Many exam candidates lose marks simply because they do not read the questions properly.
I decided to go with them, mainly because I had nothing better to do.
2. just because ... spoken used to say that, although one thing is true, it does not mean that something else is true:
Just because you’re my brother doesn’t mean I have to like you!
▪ because conjunction used when giving the reason for something: I went home because I was tired. | The streets were flooded because of all the rain.
▪due to/owing to preposition used to give the reason why something has happened. Due to and owing to are more formal than because: The delay was due to a problem with the ship’s engines. | The parade had to be cancelled owing to bad weather.
▪through preposition because of something. Through is used especially when saying why someone succeeded or failed to do something: They won the game, more through luck than skill. | You failed that test through carelessness.
▪thanks to preposition used when explaining that something good has happened because of someone’s efforts, or because something exists: Thanks to modern medicine, the disease can now be cured.
▪since/as conjunction used when giving the reason why someone decides to do something or decides that something is true: We decided to go to the beach since it was a nice day. | I thought Kevin was out as his car wasn’t there.
▪out of preposition because of a particular feeling or quality: He started reading the book out of curiosity. | I only asked out of politeness.
because2 S1 W1 preposition
because of somebody/something used to say who or what causes something to happen or is the reason for something:
He had to retire because of ill health.
We spent three hours waiting in the rain because of you!
REGISTER
In written English, people often prefer to use the expressions due to something, owing to something, or as a result of something, which sound more formal than because of something:
▪Many businesses fail due to cash-flow problems.
| I |
conjunction Date: 1300-1400
Origin: by cause (that)
1. used when you are giving the reason for something:Origin: by cause (that)
2. just because ... spoken used to say that, although one thing is true, it does not mean that something else is true:
| THESAURUS |
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| II |
prepositionbecause of somebody/something used to say who or what causes something to happen or is the reason for something:
REGISTER
In written English, people often prefer to use the expressions due to something, owing to something, or as a result of something, which sound more formal than because of something:
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◆ There are two main reasons why I think it's the best option: first, there's the cost and second, the quality.我认为这是最好的选择，主要原因有两个：第一是成本，第二是质量。 ◆ I think/believe it's the right thing to dobecause it gives everyone a fair chance.我认为这么做是正确的，因为这给予每个人公平的机会。 ◆ I would choose the newer oneon the grounds that it will last longer.我会选择较新的那个，因为它更加耐用。 ◆ Of the three houses, the largest one seems to me to be the best, because they need the room.这三栋房子中，最大的那栋在我看来是最好的，因为他们需要这么大的空间。 ◆ My choice would be number 3, simply because it's the clearest design.我的选择是 3 号，原因就在于它的设计最清晰。
Explaining reasons 解释原因
◆ The number of people with diabetes is growing, partly because of an increase in levels of obesity.患糖尿病的人数不断上升，部分原因是肥胖人数增加。 ◆ The number of overweight children has increased dramatically in recent years, largely as a result of changes in diet and lifestyle.近年来肥胖儿童的数量急剧上升，很大程度上是由饮食和生活方式的改变引起的。 ◆ The increase in childhood obesity is largely due to /the result of changes in lifestyle and diet over the last twenty years.肥胖儿童人数的增多主要是过去二十年来饮食和生活方式的改变所致。 ◆ Many obese children are bullied at school on account of their weight.许多肥胖儿童因为其体重问题在学校受到欺负。 ◆ Part of the problem with treating childhood obesity stems from the fact that parents do not always recognize that their children are obese.治疗肥胖儿童的困难部分源自父母有时并不认为自己的孩子肥胖。 ◆ Childhood obesity may be caused by genetic factors, as well as environmental ones.儿童肥胖既可能由环境因素引起，也可能是遗传因素所致。