because 义务阶段1500 全国卷频次:258
Many animals recognize their food because they see it.
We often eat food because we like it and not because it is good for us.
Food prices have increased because of higher oil prices.
I’ve learned to get over bad life’s experiences and learned how to move on because of her.
To this day I know that it was because I changed my way of thinking that I completely changed my life.
because of adv. 因为；由于
conj.因為,由於The applause paused because of the cause caused by a cautious plausible clause.掌聲停了是因為一條謹慎的似乎有理的條款引起的原因.
for the reason that
I did it because he told me to.
Just because I don’t complain, people think I’m satisfied.
• because of prep.:
They are here because of us.
He walked slowly because of his bad leg.
Because of his wife(‘s) being there, I said nothing about it.
1 used when you are giving the reason for something 因为
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 仅仅因为…
Just because you’re my brother doesn’t mean I have to like you!
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.
We spent three hours waiting in the rain because of you!
Origin because (1300-1400) by cause (that)
1.CONJ-SUBORD 连词（说明原因）因为，由于 You use because when stating the reason for something.
He is called Mitch, because his name is Mitchell…
Because it is an area of outstanding natural beauty, you can’t build on it…
Women are doing the job well. This is partly because women are increasingly moving into a man’s world…
‘Why didn’t you tell me, Archie?’— ‘Because you might have casually mentioned it to somebody else.’
2.CONJ-SUBORD 连词（作出解释）因为 You use because when stating the explanation for a statement you have just made.
Maybe they just didn’t want to ask too many questions, because they rented us a room without even asking to see our papers…
The President has played a shrewd diplomatic game because from the outset he called for direct talks with the United States…
I had a sense of déjà-vu because I could recognise everything in London.
3.PREP-PHRASE 短语介词因为；由于 If an event or situation occurs because of something, that thing is the reason or cause.
Many families break up because of a lack of money…
Because of the law in Ireland, we had to work out a way of getting her over to Britain.
4.PHR-CONJ-SUBORD 仅仅因为 You use just because when you want to say that a particular situation should not necessarily make you come to a particular conclusion.
Just because it has a good tune does not mean it is great music…
Just because something has always been done a certain way does not make it right.
Usage Note :
You can use because, as, since, or for to give an explanation for something. Because is the commonest of these, and is used when answering a question beginning with ‘why?’.You can use as or since instead of because to introduce a clause containing a reason for something, especially in writing. …a note about The National Portrait Gallery, as the word ‘Gallery’ can be misleading… Since the juice is quite strong, you should always dilute it. In stories, for is sometimes used to explain or justify something. He seemed to be in need of company, for he suddenly went back into the house. Note that because is a conjunction, and is used to link two ideas within one sentence. I’m unsocial, because of my deafness.
because, as, since 或者 for 都可以用来给出解释。because 最常用，用来回答以 why 开头的疑问句。as 或 since 可以代替 because 引导原因从句，尤其是在书面语中：a note about The National Portrait Gallery, as the word ‘Gallery’ can be misleading（对 The National Portrait Gallery 的注释，因为 Gallery 一词容易令人误解），Since the juice is quite strong, you should always dilute it（这种果汁太浓，所以必须加以稀释）。在故事中，for有时用于解释或论证：He seemed to be in need of company, for he suddenly went back into the house（他看起来需要陪伴，因为他突然回到了屋里）。注意，because 是连词，用来连接一个句子中的两个观点：I’m unsocial, because of my deafness（我耳朵聋，所以不善交际）。
: for the reason that因为；由于
I ran because I was afraid.
We were late because our car wouldn’t start. = Because our car wouldn’t start, we were late.
“Why did you do it?” “Because she told me to.”
: for the reason of因为；由于
The picnic has been canceled because of [=due to, on account of] bad weather.
Because of this [=for this reason], only very rich people can afford to live on the island.
Because of you, we missed the bus. [=you caused us to miss the bus] 都是因为你我们才没赶上那班公共汽车。
The accident happened because of [=through] carelessness.
: for the simple or single reason that只是因为；仅仅是由于
Don’t get nervous just because the teacher might ask you a question.
We can’t assume it will rain today just because it rained yesterday.
Just because your friends do it, that doesn’t mean that you should do it, too.