双语杯高中英语竞赛(汇总20篇)

This winter is freezing cold. I didn’t have any desire to go out for play.

I always stayed at home. Actually, most of the time I was in my bed. When I felt

anxious for staying inside too long, I will go near the window to wach the

children building snowman or throwing snowballs. It seemed very interesting. But

I just didn’t want to go out. Later my mother found that I was so lazy. Then she

forced me to go out. Since my mother said, I have no excuse to reject. My mother

is right. Though the outside was icy, it’s fantastic. Everything smells fresh.

Since then, I went outside everyday, and then did my homework and felt full of

energy. The holiday ended very soon. It was a lazy holiday.

What is your favorite kind of music? Do you like jazz, popular music,

classical music, folk songs, blues, and so on? In high school I took one course

called music appreciation which I greatly enjoyed. This was not to learn how to

play a specific instrument but to learn how to read and listen to music as an

art form. We read the stories about the lives of many composers and the history

of the musical instruments themselves. Sometimes we listened to tapes at the

language laboratory, or concerts. Music is sometimes called a universal

language. A composer who cannot speak a single word of our language can make us

feel joy and pride, exaltation and despair, peace and mystery through his

music.

There is an old saying that no one is perfect, so everyone will make

mistake sometimes, though we want to do best. When we make mistake, we must say

sorry to others, for the purpose of showing our regret, so that they will

forgive us and continue to keep in touch with us. Some people think apologize

will lose their faces, so they choose not to say sorry.

A wise person will make

apologize in a natural way and let the past be past, the good way to apologize

can help people feel easy. People can find the chance to apologize when they are

having communication, they can make the topic about apologize and then saying

that he is sorry about what he have done, so everything will seem easy.

Apologizing will promote people’s communication and keep their friendship. So

don’t feel losing face, just admit what you have done wrong.

导入：

第1段：提出一种现象或某个决定作为议论的话题

As a student, I am strongly in favour of the decision. (亮明自己的观点是赞成还是反对)

The reasons for this may be listed as follows. (过渡句，承上启下)

正文：

第2段：First of all... Secondly... Besides...(列出2~3个赞成或反对的理由)

结论：

第3段：In conclusion, I believe that... (照应第1段，构成"总—分—总"结构)

4."How to"类议论文模板：

导入：

第1段：提出一种现象或某种困难作为议论的话题

正文：

第2段：Many ways can help to solve this serious problem, but the following may be most effective. First of all... Another way to solve the problem is ... Finally...(列出2~3个解决此类问题的办法)

结论：

第3段：These are not the best but the only two/ three measures we can take. But it should be noted that we should take action to...(强调解决此类问题的根本方法)

Before we go to school, we get our parents to supervise us all the time, so we live in a very safe environment.

While when we go to school, parents can’t keep their eyes on us all the time, they are so worried about us, so they begin to tell us how to keep ourselves safe.

The most important thing is that don’t talk to strangers, as a teenager, we haven’t had the ability to judge who is the good guy and who is the bad guy, so it is better not to talk to the strangers.

The bad guys will like to talk to the teenagers, they want to do something to pay the teenagers’ attention, thus they can induce the children to go with them and do the bad thing.

In order to protect teenagers’ security, teenagers are taught to keep distant from the stranger.

在我们上学前，我们一直有父母的照看，所以我们生长在一个很安全的环境。然而当我们上学以后，父母不能一直监视着我们，他们很担心我们，因此他们开始教导我们如何保持自身的安全。

最重要的事情就是不要和陌生人说话，作为一名青少年，我们还没有能力去判断好人和坏人，所以最好不要和陌生人讲话。

坏人会喜欢和青少年聊天，他们想要做一些事情来吸引青少年的注意，以此来引诱青少年跟他们走，做坏事。

为了保护青少年的安全，青少年应该和陌生人保持距离。

[高中英语作文：不要和陌生人说话

When I was a child, I raised a pet, named Lucky.Actually he is a cat.His fur is soft with yellow and white color.Lucky is a good boy.He always behaves well.I remember when my uncle took him back to my home at first, I was afraid of him.But soon I found him is very interesting.I started to play with him.As time goes, we like each other very much.And then my uncle gave him to me.I was so happy.Now he always lies beside me quietly, when I’m doing my homework.As winter comes, he will sleep with me.sometimes he will dance for me, which is very funny and sometimes his hands are wet would leave many “plum flower” on the ground.He is so lovely.

在我还是个孩子的时候，就养了一只叫做幸运的宠物。其实他是一只猫。他的毛很柔软，是黄色和白色。幸运的是一个好男孩。他总是很听话。我记得当我叔叔带他来到我家的时候，我很怕他。但不久后，我发现他很有趣。我开始和他玩。随着时间的推移，我们都互相非常喜欢对方。之后我叔叔就把他送给了我。我是如此的高兴。现在他总是在我做家庭作业的时候悄悄地躺在我的身边。冬天来了，他会跟我一起睡。有时他会为我跳舞，那是非常有趣的，有时他的爪子湿了就会在地面上留下许多“梅花”。他很可爱。

my daddy was not happy because he thought it was not good for my study.Sometimes I felt I was not a free boy when my daddy was so strict with me,so I tried to talk to my daddy,and he said he was happy because I talked to him,and now he let me play games if I study well.From this,I understand a friendly talk can help people get along well.

If you ask someone that do they often go to library, I think they will

answer you with no, the reason I am saying this because of the development of

ebook. Many years ago, without computer, the only way to check the information

that you need is from paper books, it means you need to go to the book shop or

the library, while with the development of the Internet, people have access to

the information very easily, you only need to click on the computer, then what

you look for is in front of you. Ebook is a very popular form for reading,

people can find what they want to read in the computer, like the novel story,

then download. It is so convenient and fast, it can save a lot of time, we don’t

need to go to the library if we are busy. Ebook is a good way for reading.

参考翻译

如果你问一些人他们是否经常去图书馆，我觉得他们会回答不，我这样说的理由是因为电子书的发展。很多年前没有电脑，你想要核查你所需要的信息，唯一的方法就是去找纸质书，这意味着你需要去书店或者图书馆，然而随着电脑的发展，人们能很轻易得到信息，你只需要点击电脑，然后你所寻找的就会在你眼前。电子书是一种很受欢迎的阅读方式，人们可以在电脑上找到他们想要阅读的，比如小说，然后下载。这很方便快捷，能够省时，我们不需要去图书馆，如果我们很忙的话。电子书是阅读的好方式。

1 Shaven – unshaven

1刮过的-没刮过的

2 Predictable – unpredictable

2可预言的-不可预言的

3. Practical – impractical

3.实际的-不切实际的

4. Patient – impatient

4.耐心的-不耐心的

5. Reliable – unreliable

5.可靠的-不可靠的

6. Regular – irregular

6.正常的-不正常的

7. Social – antisocial

7.爱交际的-不爱交际的

8. Attach – detach

8.附着-分离

9. Respect – disrespect

9.尊敬-不敬

10. Exhale – inhale

10.发出-吸入

11. Possible – impossible

11.可能的-不可能的

12. Cooked – uncooked

12.煮熟的-未熟的

13. Introvert – extrovert

13.内向的-外向的

14. Voluntary – involuntary

14.志愿的-非志愿的

15. Responsible – irresponsible

15.负责的-不负责的

16. Do – undo

16.规定-取消

17. Important – unimportant

17.重要的-不重要的

18. Precise – Imprecise

18.精确的-不精确的

Once， when I was a teenager， my father and I were standing in line to buy tickets for the circus. Finally， there was only one family between us and the ticket counter.

This family made a big impression on me. There were eight children， all probably under the age of 12. You could tell they didnt have a lot of money.

Their clothes were not expensive， but they were clean. The children were well-behaved， all of them standing in line， two-by-two behind their parents， holding hands. They were excitedly jabbering about the clowns， elephants， and other acts they would see that night.

One could sense they had never been to the circus before. It promised to be a highlight of their young lives. The father and mother were at the head of the pack， standing proud as could be.

The mother was holding her husbands hand， looking up at him as if to say， "Youre my knight in shining armor."

He was smiling and basking in pride， looking back at her as if to reply， "You got that right."

The ticket lady asked the father how many tickets he wanted. He proudly responded， "Please let me buy eight childrens tickets and two adult tickets so I can take my family to the circus."

The ticket lady quoted the price. The mans wife let go of his hand， her head dropped， and his lip began to quiver. The father leaned a little closer and asked， "How much did you say?"

The ticket lady again quoted the price. The man didnt have enough money.

How was he supposed to turn and tell his eight kids that he didn‘t have enough money to take them to the circus? Seeing what was going on， my dad put his hand in his pocket， pulled out a $20 bill and dropped it on the ground. (We were not wealthy in any sense of the word!)

On Sunday morning, my parents took me to the zoo. We dint go there for a long time.

Last week, my classmates told me that the zoo added some funny entertainment facilities. I was very curious. So, I asked my parents to took me there and they promised to. We got there at 9 oclock. There were many people. Most of them were parents and children.

We first went to see the animal. I like parrots most. And then we saw the animal shows. Elephants, tigers, lions and monkeys did wonderful shows for us. People were happy, especially the children.

After that, we went to experienced the entertainment facilities. My mum was too scared to be with us. So, only my dad and I played. It was so exciting, but I was a little dizzy. However, I was very happy.

It was a great day.

星期天早上，我父母带我去动物园。我们很久没去那里了。

上周，我同学告诉我动物园新增了一些好玩的娱乐设施。我很好奇，所以我叫我妈妈带我去，而且她答应了。我们9点就到那了。那人很多，大部分是家长和孩子。

我们首先去观看动物。我最喜欢鹦鹉。接着我们看了动物表演。大象，老虎，狮子和猴子给我们表演了精彩的节目。人们都很高兴，特别是小孩子。

之后，我们去体验了娱乐设施。我妈妈很怕，不敢跟我们一起。所以，只有我和爸爸玩。它很刺激，但是我有一点点头晕。但是，我还是很开心。

这真是很棒的一天。

[去动物园高中英语作文

关于城市介绍高中英语作文篇1

The city of hangzhou lies in the southeast of china and faces the east sea. it is famous for its beautiful west lake with a long history.whenever you come to this modern city you will see many parks and some places of interest around the west lake. during the holidays or festivals or at the weekends, people like boating on the water or walking on the paths of the woods or sitting on the ground to have a picnic. what a good time they have! since the politics of the reforming and opening were carried out by the government of hangzhou, plenty of tall buildings have been set up and great changes have taken place in this city.

杭州位于中国的东南，东临东海，以美丽的西湖而闻名于世。无论你什么时候去杭州，都会看到许多公园和名胜古迹环绕着西湖。节假日人们喜欢在西湖上荡浆，在小树林里漫步，或者坐在地上野炊，度过愉快的时光。自改革开放以来，杭州发生了巨大变化，许多高楼大厦拔地而起，呈现出新面貌。

关于城市介绍高中英语作文篇2

Beijing is an ancient city with a long history. Back in 3000 years ago in Zhou dynasty, Beijing, which was called Ji at the moment, had been named capital of Yan. Thereafter, Liao, Jin, Yuan, Ming and Qing dynasty all made Beijing their capital. Therefore, Beijing was famous for "Capital of a thousand years".

The long history leaves Beijing precious cultural treasure. Winding for several kilometers in Beijing area, the Great Wall is the only man-made structure that could been seen in the space. The Summer Palace is a classic composition of ancient royal gardens, and the Forbidden City is the largest royal palaces in the world. Tiantan is where the emperor used to fete their ancestors, and also the soul of Chinese ancient constructions. The four sites above has been confirmed world cultural heritage by UNESCO. However, the best representatives for Beijing are the vanishing Hutongs and square courtyards. Through hundreds of years, they have become symbol of Beijings life. Tiananmen square being still brilliant today with cloverleaf junctions and skyscrapers everywhere, the old-timey scene and modern culture are combined to present a brand new visage of Beijing.

As Beijing has been confirmed home city of Olympics 2008, the spirit of "green Olympics, scientific Olympics and humanized Olympic" will surely bring more and more changes to Beijing, promote the development of sports and Olympics in China as well as in the world, and strengthen the friendly communications between Chinese and foreign people.

小编导语：Happy Valentines Day!2月14情人节是一个全世界性的节日，这天情侣们会在一起共度美好时光，在这浪漫的节日里，温情的情人节祝福怎么能少呢?情人节英文祝福语大全：快为你的中外友人送上温馨的情人节祝福吧。

To the girl of my dreams and the mother of our child: you are the only Valentine for me. 献给我梦中的女孩及我们孩子的母亲：你是我惟一的爱人。

On this Valentines Day, just like every day, all I have is love for you. 如同每一个平常的日子，我在这个情人节里所拥有的东西，就是对你的爱。

I will be your Valentine until the end of time. 我将是你的情人，直到地老天荒。

To my one and only Valentine: I love you. 献给我唯一的爱人：我爱你。

I didn’t think that I could ever trust happiness. Then I met you.Happy Valenti ne’s Day, Dear. 我一直不相信有真正的“幸福”，直到不久以后，我邂逅了你。亲爱的，情人节快乐。

Be genuine and conceal noting.I write every wiod I wand to say on this small card.I wish my honey a happy Valentine’s day. 真诚，不必隐藏，把所有的话语，都写在那小小的贺卡上。祝我新爱的人，情人节快乐。

Sending you a kiss to say I’m glad that you are mine. Happy theday! 送你一个吻，悄悄的说我很高兴你是我的。情人节快乐!

I love you not because of who you are, but because of who I am when I am with you. 我爱你，不是因为你是一个怎样的人，而是因为我喜欢与你在一起时的感觉。

To the world you may be one person, but to me you may be the world. 对于世界而言，你是一个人;但是对于我，你是我的整个世界。

It is graceful grief and sweet sadness to think of you, but in my heart, there is a kind of soft warmth that can’t be expressed with any choice of words. 想你，是一种美丽的忧伤的甜蜜的惆怅，心里面，却是一种用任何语言也无法表达的温馨。

Do you understand the feeling of missing someone? It is just like that you will spend a long hard time to turn the ice-cold water you have drunk into tears. 你知道思念一个人的滋味吗，就像喝了一大杯冰水，然后用很长很长的时间流成热泪。

Those days when we were together appear in my mind time after time, because they were so joyful, happy, blest, disappointing, sad and painful. I miss you ,and miss you so mach…… 常常想起曾和你在一起的那些日子。开心、快乐、幸福、失落、伤心、痛苦的所有日子。很想你，很想你……

Do you know there is someone thinking of you and caring you all the time ? Your smiling eyes are just like the sparkling stars hanging on the curtain of my heart. 你知道么，有个人时时想念着你，惦记你，你含笑的眼睛，象星光闪闪，缀在我的心幕上，夜夜亮晶晶。

Listening to my heart beating. Seeing how much I love you ,I dare to admit how much I love you .When thinking of you, I hope you can receive the passionat words I left for you! 心要让你听见，爱要让你看见，不怕承认对你有多眷恋;想你的时候，盼你能收到我的真情留言!

I miss you not because of my loneliness but I do feel lonely when I miss you. Only when I miss you deeply I feel so lonely. 不是因为寂寞才想你，是因为想你才寂寞。孤独的感觉之所以如此之重，只是因为太想你。

As a Senior Grade Three students, I am very busy in preparing for the college entrance examination. I have seven classes a day, and two self-study classes at night. And only a day left for the weekend. So, most of the time I have to spend on the study, after all the college entrance examination is very important for almost all of us. Aside of study, I would play football with my friends after school and the weekend. I like playing football very much. When I run on the football field, I can put the examination thing off my mind for a while, only sweat and laugh left. It is a good exercise for health and a good way to relax from the busy study too. This is my high school life, busy and fulfilling.

作为一个高三的学生，我忙于为高考做准备。我一天有7节课，还有两节晚自习。周末只剩下一天。所以，我把大部分时间都花在学习上，毕竟高考对我们大多数人来说都十分重要。除了学习，我会在放学后以及周末跟我的朋友一起踢足球。我非常喜欢踢足球。当我在足球场上奔跑的时候，我可以暂时将考试的事情抛之脑后，只剩下汗水和欢笑。这对健康是个很好的锻炼，也是一个学习之余很好的放松方式。这就是我的高中生活，忙碌而充实。

The older I grow, the more I appreciate children. Now, at my 80th birthday, I salute them again. Children are the most wholesome part of the race, the sweetest, for they are freshest from the hand of God. Whimsical, ingenious, mischievous, they fill the world with joy and good humor. We adults live a life of apprehension as to what they will think of us; a life of defense against their terrifying energy; a life of hard work to live up to their great expectations. We put them to bed with a sense of relief---and greet them in the morning with delight and anticipation. We envy them the freshness of adventure and the discovery of life. In all these ways, children add to the wonder of being alive. In all these ways, they help to keep us young.

Life is each persons wealth, because the world with life and colorful, full of vigour, let us love and cherish own life, seize every minute of life. Life is short, be gone for ever, human life is fleeting, time can not be reversed, we can only in a limited life infinite brilliance.

That day, my good friend clay came to my house to play, my mother know, immediately do a lot of delicious to clay. When we have fun when, suddenly, clay fainted. Mom saw mud, immediately sent to hospital. After the doctors detailed inspection, the final judgment is had leukemia. Doctor for my mother said: oh! The child to live no longer than four months, if you come a little earlier treatment, it is no big deal. But now... Alas! Mother pale, said to the doctor: doctor, do not save? The doctor reluctantly shook his head. At that moment, I have tears in eyes is the best, but couldnt flow down. I think: why the event would fall in my good friend why, why! My mother said to me: my daughter, you dont cry. We dont know if that mud, mud know she will be very sad, you promised mom dont tell clay, okay? I cried and said: Mom and I promise you, I will not tell her.

We came to the clay ward, pretending to be happy. For I in the four months to make clay can happy every day, make clay in full every day, I spend a lot of time. But time always flies so fast, I am very sad, because I know the clay have not much time.

[高中英语作文:热爱生命

March 12th is Tree Planting Day. This year our school bought enough  the trees before that day . On that day , we didnt had classes . The teachers and our classmates planted trees around our the school.

We began to planted trees as soon as we got to school . some students dug the holes . Some students put the trees into the holes.

Some students put the earth back to the holes. Then we pushed the earth hard with our feet . At last we watered the trees as much as possible.

From then on we looked after the trees carefully and the trees grew very well . It made our shcool more beautiful .And How happy we are !

We are always educated to be an honest person, especially to our parents. While the fact is that every kid will lie to their parents in their lives. For me, my parents are very strict, I am not allowed to go out at night, because the news always reports the bad incidents happen at night. But night activity attracts me a lot, and my friends like to hang out for fun at night, so I choose to lie to my parents and tell them I am doing my homework with my friends. Now as I grow up, I realize it is not right to tell lies, so I decide to be honest to my parents. Once they realize that I am not a little kid anymore, then I will have my right to do what I want.

Life is like a piano,what you get out of it,depends on how you play it.

No sweat, no sweet.

没有辛勤的劳动，哪有甜美的收获?

There is no end to knowledge.There is no end to perfect character.

读不尽者书，造诣不尽者人品。

Great works are performed not by strength, but by perseverance.

做大事，靠的是毅力而不是力量。

Cease to struggle and you cease to live.

停止奋斗，就等于放弃生活。

Great works are performed not by strength but by perseverance

伟大的工作是源于坚持不懈，而不是一时的热情。

Congratulations on your graduation! Whishing you a future filled with success and joy of seeing your dreams come true.

祝贺您的毕业!希望您有一个成功的未来，感受到梦想成真的快乐。

Boys, be ambitious.

男孩，是雄心勃勃的

Man can survive, only when he has the substance, man can live only when he has ideal.

人依靠物质就能生存，但只有拥有理想时，才叫生活。

Goals determine what you are going to be.

目标取决于您的愿望。

Great hope makes great men.

伟大的愿望成就伟大的人。

An aim in life is the only fortune worth finding. Pursue your object, be it what it will, steadily and indefatigably.

Man who has a settled purpose will surely succeed.

目标专一的人肯定会成功。

Follow your own course, and let people talk.

走自己的路，让别人去说。

Life is a leaf of paper white, thereon each of us may write his word.

There is a limit to ones youth, but no limit to his wisdom. Draw on the limitless wisdom during the short span of youth.

Self-reverence, self-knowledge, self-control, these three alone lead life to sovereign power.

自我尊敬，自知之明，自我控制，这是生活的最高境界。

Character decided the fate ,and knowledge changes ours fate.

高中英语自我介绍范文(一)

My name is ________. I am graduate from ________ senior high school and major in ________. There are ________ people in my family. My father works in acomputer company. And my mother is a housewife. I am the youngest one in my family.

In my spare time, I like to read novels. I think reading could enlarge my knowledge. As for novels, I could imagine whatever I like such as a well-known scientist or a kung-fu master. In addition to reading, I also like to play PC games. A lot of grownups think playing PC games hinders the students from learning. But I think PC games could motivate me to learn something such as English or Japanese.My favorite course is English because I think it is interesting to say one thing via different sounds. I wish my English could be improved in the next four years and be able to speak fluent English in the future. 中文翻译:我的名字是________。我graduatefrom ________ seniorhigh学校及主要________。有________人在我的家人。我父亲的作品在一家电脑公司。和我母亲是一位家庭主妇。我是家里最小的一个。我在业余时间,我喜欢看小说。我认为阅读可以enlargemy知识。至于小说,我可以想象不管我,如着名的科学家或功夫师父。除了阅读,我也喜欢玩电脑游戏。很多的成年人认为玩电脑游戏阻碍从学习的学生。但我认为,个人电脑游戏可以激励我学到一些东西,英语或Japanese.My喜欢当然,这样的英语,因为我觉得有趣的是,说的是一套通过不同的声音。我希望我的英语可以提高在未来4年,可以说在未来流利的英语。

高中英语自我介绍范文(二)

I am ___________. I was born in _________ . I graduate from senior high school and major in English. I started learning English since I was 12 years old. My parents have a lot of American friends. That’s why I have no problem communicating with Americans or others by speaking English.

In my spare time, I like to do anything relating to English such as listening to English songs, watching English movies or TV programs, or even attending the activities held by some English clubs or institutes. I used to go abroad for a short- term English study. During that time, I learned a lot of daily life English andsaw a lot of different things.

I think language is very interesting. I could

express one substance by using different sounds. So I wish I could study and read more English literatures and enlarge my knowledge. 中文翻译:我是XXX。我出生英寸我毕业的高中和英语专业。我开始学习英语,因为我是12岁。我的父母有很多美国朋友。这就是为什么我没有问题,与美国或其他国家的英语沟通。我在业余时间,我喜欢做的任何与英语的听英文歌曲,看英文电影或电视节目,甚至参加一些英超俱乐部或学院所举行的活动。我曾经去作短期英语留学。在此期间,我学到了很

多日常生活的英语,看到了很多不同的事情。我觉得语言很有意思。我可以表达一种substanceby使用不同的声音。所以,我希望我能学习更多英语文学和扩大我的知识 高中英语自我介绍范文(三)

My name is___________ . There are 4 people in my family. My father is a Chemistry teacher. He teaches chemistry in senior high school. My mother is an English teacher. She teaches English in the university. I have a younger brother, he is a junior high school student and is preparing for the entrance exam.

I like to read English story books in my free time. Sometimes I surf the Internet and download the E- books to read. Reading E- books is fun. In addition, it also enlarges my vocabulary words because of the advanced technology and the vivid animations.

I hope to study both English and computer technology because I am interested in both of the subjects. Maybe one day I could combine both of them and apply to my research in the future. 中文翻译:我的名字是。有4人在我的家人。我的父亲是一个Chemistryteacher。他教高中化学。我的母亲是一名英文教师。她教英语的大学。我有一个弟弟,他是一个初中学生,是联考的准备。我喜欢阅读,在我空闲时,英文故事书。有时我上网冲浪和下载电子书籍阅读。阅读电子书籍的乐趣。此外,还扩大了,因为我的先进技术词汇和生动的动画。我希望学习英语和计算机技术,因为我感兴趣的是两个科目。也许有一天,我可以把他们和今后适用于我的研究。

Oceans becoming more acidicThe worlds oceans are slowly getting more acidic, say scientists.The researchers from California say the change is taking place in response to higher levels of carbon dioxide in the atmosphere.The lowering of the waters pH value is not great at the moment but could pose a serious threat to current marine life if it continues, they warn.Ken Caldeira and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature.Increasing use of fossil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by seawater.

Once in the water, it reacts to form carbonic acid.Scientists believe that the oceans have already become slightly more acidic over the last century.But these researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate change."This level of acidity will get much more extreme in the future if we continue releasing CO2 into the atmosphere," said Dr Caldeira."And we predicted amounts of future acidity that exceed anything we saw over the last several hundred million years, apart from perhaps after rare catastrophic events such as asteroid impacts."If carbon dioxide release continues unabated, ocean pH could be reduced by as much as 0.77 units, the authors warn.It is not absolutely clear what that means for marine life, however.

Most organisms live near the surface, where the greatest pH change would be expected to occur, but deep-ocean lifeforms may be more sensitive to pH changes.Coral reefs and other organisms whose skeletons or shells contain calcium carbonate may be particularly affected, the team speculate. They could find it much more difficult to build these structures in water with a lower pH.In recent years some people have suggested deliberately storing carbon dioxide from power stations in the deep ocean as a way of curbing global warming.But Dr Caldeira said that such a strategy should now be re-considered."Previously, most experts had looked at ocean absorption of carbon dioxide as a good thing - because in releasing CO2 into the atmosphere we warm the planet; and when CO2 is absorbed by the ocean, it reduces the amount of greenhouse warming.