写高中生活的英语作文（实用20篇）

我们知道，很多人认为大学生活是自由、舒适的，但我想说这不是真的。事实上，我的大学生活是如此的忙碌，以至于我都不知道我的能量是否足够。下面是小编帮大家整理的大学生活感触英语作文，希望大家喜欢。

As we know, many people favor theidea that the college life is free and comfortable, but I’d like to say it’snot true. As a matter of fact, my life in university is so busy that I wonderif my energy is enough. As to my college life, I divide it into four parts,including study, student activities, library and the others.

Firstly, I want to talk about thestudy. In my opinion, study is the priority in college. When I received theletter of admission in summer, I knew clearly that what I should do. So I makeup my mind to study hard and pursue learning as much as possible. I’m greatlyconvinced that knowledge can change my life. Therefore, I often go to the quietstudy room where many people study there. By working so hard, I get good gradesin the exams.

Secondly, student activities playan important role in our college life. To be honest, the student Union is agood place where one can develop social skills, get his abilities trained. Itake part in many student activities. For example, I’ m a volunteer, teachingthe kids to learn to dance and write. I think it’s meaningful for everyone togive a hand to others. I can also do some jobs in the Student Union, includingreceiving and sending fast mail, selling papers and magazines. I think they’re unforgettableand worthwhile experiences for me.

Thirdly, I also visit the libraryconstantly. It’s said that “shelves of books, oceans of knowledge”, so I readbooks that I’m interested in. In this way, I can share stories with my new friendsand it also changes my horizons .When I’m sad, lost or in trrouble, staying thelibrary makes me quiet and comfortable. After all, every life has bad momentsas well as good ones, and the library for me is a support in bad moments. So it’s wise choice for me to stay in thelibrary.

Finally, I often do other thingsin my spare time. In order to alleviate parents’ burden, I often do somepart-time jobs and write some articles to earn money. It helps me to beindependent and improve my social skills.

In short, mylife in university is busy but valuable. You can see that study brings me knowledge,student activities improve myself, library changes my horizons, the othersthings make me independent. They get all my abilities trained. And I see thatthe chance will come only if you have a prepared mind, so I’m sure that I canachieve my dreams in college life.

高一英语作文 我的考试经验

My Experience In Examination

In my opinion, examinations are one of the important activities in school life. I have gone through all sorts of examinations since my primary school. I have tasted the flavor of happiness and sadness.

Before examinations I always have a hard time and dont know what to do.During examinations I feel nervous and sometimes my mind becomes blank Only after examinations does the world seem to be bright again and am I brimming with vigor. We often complain that our teachers make trouble for us on purpose. But it is not true. The fact is that examinations are just a way to-help us do better in our study.( 110 words)

[高中英语参考作文: 我的考试经验

科技，可谓是无处不在。从身边的电灯、电脑，到太空的飞船、卫星，现在发达的科技，是古人做梦也不敢想的。科技与生活的关系十分紧密，没有了科技，我们人类只能停留在茹毛饮血的野蛮时代。科技推动着社会的发展，也给我们人类的生活带来了巨大的变化。

科技使我们的出行更便捷。听妈妈说在二十年前她在沈阳上大学的时候，从郑州到沈阳要做三十一个小时的火车才能到达。而现在坐普通火车只需要十四个小时，我们就能节省出一半多的时间，如果选用高铁七个小时就可以到了，坐飞机就只需要一个多小时。

科技的发展也改变了我们的支付方式。以前在商场买东西只能用现金，找零钱是造成排队的一大因素。如果不小心忘了带钱还会发生一些尴尬的事儿。而现在银行卡、微信、支付宝各种支付方式层出不穷，走到哪儿需要付钱时都是刷一下，真可谓一部手机走天下。

科技也使我们获取信息的方式增加了。妈妈小时候只能从书本或是收音机中获得信息，后来才慢慢普及了电视。现在我们可以通过许多渠道获取知识，从书中、从电视中，更多的是从网络中，我们获取知识的速度和广度比起我妈妈小时候不知多了多少倍。因此，我的知识量也比我妈妈小时不知多了多少倍。

越来越多的先进的设备也进入了我们的生活。电视、冰箱、洗衣机的老三样早已是家庭必备，带预约的电饭锅、能够感应的马桶。人工智能也不甘落后的加入了我们的生活，两年前妈妈买回来了一个扫地机器人琥珀，从此以后琥珀勤劳的工作使我们的家更干净，也使我们节省了很多时间，可以投入到了学习和工作中去，而未来人工智能将会在更多领域做出贡献。

在科技发展十分迅速的今天，我们小学生应当树立远大的目标，好好学习，长大投身科学事业，努力为人类生活创造新的辉煌。

All our life, we will meet all kinds of difficulties, we have to face them

and fix them, that is what our parents tell us. Indeed, life is a journey, we

will meet different people and confront with distress, most people feel uneasy

when fail comes, they think there is no hope in life. Well, we are always told

that life is still going on even though we face difficulty. Why don’t we smile

with life, since we there is no way to avoid frustration, the only way we can do

is to embrace what life brings for us, no matter what happens, just smile,

everything will be alright.

Today is New Years Day, the outside decorated, celebrate, extremely busy!

The streets are: firecrackers, the drums and gongs of. The most fun but also a few dance the dragon, the first one uncle Wu Zhao a "dragon pearl", the other uncle, Wu Zhao 2 "Dragon", each a "dragon" are trying to "Dragon Ball" became his treasured.

Very happy today!

今天是大年初一，外面张灯结彩、普天同庆，热闹极了！

大街上有：放鞭炮的、敲锣打鼓的。最好玩的还要数舞龙灯，第一个叔叔舞着一颗“龙珠”，其他的叔叔舞着两条“龙”，每一条“龙”都想把“龙珠”变成自己的宝贝。

今天开心极了！

晃晃悠悠、磕磕绊绊，我的初中时代已成成长路上一道走过的美丽风景。 当我走出考场的那一刻，看着熟悉的脸庞，或懊丧，或喜悦，或深沉，或平静……

当我拿到高中通知书时，心里感叹良久。最熟悉的同学就这样各奔东西了，但我想这只是人生的另一个新的起点。

捧起一杯热茶，眼神迷离地看向天边，任由思绪飞向远方，漫想我的高中生活……

高中是一个完美的地方，那里有亲切和蔼的老师，有团结友爱的同学。

也许在不久的将来，我会有许多可爱的同学，有一生中最好的闺蜜，大家在一齐疯，一齐在最厌恶的老师背后说他的不是，这只但是是在发泄他的严厉;也许班里有几个调皮鬼时常在老师上课时，提一些不知所云的问题，虽然打扰了老师的课，但也给枯燥的课堂带来了一丝生气;虽然我是寄宿生，要远离温暖的家，但是我会遇到最要好的室友，在我开心的时候会坏坏地“敲诈”我要好吃的，也会在我悲伤地时候，“恶狠狠”地抽出纸巾用力地在我脸上胡乱地擦几把，也会在我不知所措的时候，悄悄地拉我一把。

我想在高中时，我会加倍努力的学习，我会认真的完成学业，我会好好的与同学相处。

在家里，我是全家人的宝贝，可此刻我要学会独立，以前我不会洗衣服，此刻我务必洗衣服;以前我不会好好的叠被子，此刻我会好好叠被子;以前我从来不会打扫卫生，此刻我务必学会打扫卫生。

这就是我想象中的高中生活，一次充满辛酸、欢快、难忘的生活经历。 是一个人一生只有一次的经历，我想说“高中，我来了!”

思绪在袅袅地白雾中渐渐被拉了回来，但是我的心里的漫想还未结束，也期望它永远不会结束。

I see a show about painting. An exhibition at a private art gallery is a way of introducing a new artist to the public .

The idea is to stage an event that will create interest in the artist and stimulate sales of his or her work. Exhibitions of painting , sculpture, and photography at public museums and galleries are different from private showings.

The works exhibited at public museums are by established, well-known artists. Many exhibitions include works from the museum’s permanent collection—that is, works owned by the museum.

[美国人的绘画生活中学英语作文

大学生活是指读大学期间的生活 。大学是知识的海洋，这里有浩瀚的图书资料和先进的仪器设备，能使大学生接触广博的知识，培养必要的专业技能，学习与人处事的方法。小编为你整理了有关大学生活作文英语，希望对你有所参考帮助。

I am proud of being a college student. I like my college life as it is so wonderful time in my youth. As being born in small village of the remote countryside, I didnt have a good education environment. However, I set a goal and felt confident to be a college student. After hard study, I passed the entrance examination of national college by excellent achievement. All people were proud of me, as I was the first college student in my village. I was farewell warmly by them when I came to school. I was warmly welcome by school, too. After then, I’ve felt my study is not only for myself but also for the honor of my village neighborhood and our school.

The college life is wonderful. All life in school are fresh. New teachers, new classmates and fresh friends are around me. I’ve felt their friendship, wide knowledge and opening mind. The grand library, school buildings and wide playground are very attracting to me. I am very eager to learn much knowledge quickly. In high school, I was ever called as a runner before time. Now,I know I am behind time so much in fact. I hope to catch up with the time by my hard studying. Every day, you can see me get up early, doing exercise hard and go to school the first one. At night, I am the one who leaves away the library. The most interesting thing is that I can’t speak the PUTONGHUA well and made many funny events at the beginning， as I am from South. When I entered the classroom at first time, I was headache as I couldn’t understand what the professor was speaking. I met much difficulties at math, physics and other courses, even though I used to be good at these sciences. Therefore, I learn these courses myself after class. After three months, the exmination indicated that I overcame all the difficlties. I also improved my listening and spoken ability of Chinese quickly. Communication is very important to my college life. I studyEnglish hard as well. It makes me have many chances to communicate with foreigners. I made friends with many foreign teachers and students. From them, I learn many knowledge about foreign cultures. The computer room is another place I like to staying. I contact the outside world by the internet. All the News, advance science, and the information about internal and outside of China.

Besides study, my college life is also very colorful. I’d like to take any chance to improve my communication skill. I am the monitor and playing an active role in class and school. Last year, I organized a speech match in management department. All the classmates were very interested in this kind of activity. I learned from them much about their hometown, their knowledge and opinions. At the same time, I shew my beautiful hometown to everyone. In school, I take care all the classmates around me. I am so poor due to from the romote countryside. The school pay most the fee for my education. I feel very happy. However, I know some classmates are poorer than me. I am willing to care them and encourage each other.

My college life is long and short. I believe that I can spend a good time in the four years. I hope I will have no any regretion when I look back the short youth of college in the future. Thanks!

那些日子不在回来了，在十一月我开始流离失所的生活。在半期考试后我和强一起去学校的天台上去喝啤酒，任风儿东南西北的吹着。我们在青岛飘香的日子里相枕而眠。看天上的流星划落。

我想了许多，然后泪流满面。

好想把心中的一切都写下来，在十一月。天空依就在那属于我的地方划落流星。十一月，倏忽而过，飘零的风，流落的雨，在人生之中飞扬无边。无怨的青春难道真的要交跟学海无边。

十一月，我开始在这个真实的世界失落。

我失落在这个十一月，看着这个日子在我的眼中僵化。

每一天，我都在十一月流浪。

十一月我开始流离失所的生活。父母或许会很失望，我是一个失败的人，从那以后我每一晚都会去学校的天台喝啤酒，喝得心底发凉。

从那以后我开始在十一月流浪，许多故事都完结在这里。

我是含泪写下这些文字的，我发现我早已流泪，我很庆幸我还有泪。

十一月，我开始在花季流浪，开始流离失所的生活。

[十一月我流离失所的生活高中作文

（1） How Do People in My Hometown Observe Spring Festival

（2） My College Life ---- A Summary of the First Term in Zhejiang

Gongshang University

Spring Festival in my Hometown

The Spring Festival, the most jubilant and important festival in China, is observed by most Chinese people at home and abroad. Our hometown is not an exception.

Similar with other places in china, we prepare for the festival about half a month before. With the lunar New Year approaching, the red lanterns are hung up along the main streets, making the ancient town filled with the festival atmosphere. While people clean up their houses, decorate it with traditional decorations such as Chinese knots and paper cutting. Each family pastes up Spring Festival couplets to convey their best wishes for the coming year.

On the New Year’s Eve, the whole family sits around, having a

sumptuous feast of reunion. It is worth mentioning that the food we have called maiyouzhi is unique. There is a flat piece of wheat sheet covering various vegetable and meat then rolling them up. What a delicious it is! After dinner, the family always watches the Spring Festival Gala Evening, and sets up fireworks to watch in the New Year.

On the first day of the New Year, people pay visits to the relatives and friends to send New Year’s greetings to each other and wish everything smoothly in the new year. The kids can get a lot of lucky money from the elders.

During the whole holiday, there are varied activities in the town such as lion and dragon dance, and all the citizens enjoy them very much.

People celebrate the festival until the Lantern festival. However, the wonderful memory and the joy of the Spring Festival will last long.

It’s really my honor to be part of Zhejiang Gongshang University.

My College Life

How time flies! I have been in Zhejiang Gongshang University for a semester. In retrospect, my college life is busy but colorful. Different from my senior high school’s life, the whole new life I led is much freer. I arranged my time,

becoming the master of myself.

First of all, study is still the core of my life. I major in Japanese which is both interesting and challenging. We are required to be accomplished in listening, speaking, reading, writing and translating. As a result I had to spend most of time in improving my abilities. Besides of the regular courses, I often attended the lecture and went to the library to eich my knowledge, and I do benefit from what I learnt.

As to the after school life, what I consider most meaningful is joining the YVP to serve society. I think it is the responsibility for every university student to make contribution to the community. Little as my effort is, I tried my best to help the people around us. Once the YVP organized us to sell secondhand books and raise the money to help the people indeed.

In addition, I quite enjoy the travels and the bees. Travels let me experience the sunshine, fresh air as well as the special taste of the local customs and practices. While the bees keep the friendship shining, and friends are as if family members. Both of them lit up my life.

All in all, the college life is a journey, and I have long way to go; all the memory is the most precious treasure, and I will value every moment.

薄雪纷纷，寒岁终至。沙发上的慵懒，球场上的喧哗，学生们终于迎来了期盼已久的假期。没有恣意怡然的逍遥，亦无藏修游息的苦闷，我的寒假生活却多了一份别样的感悟与疲惫。

寒假伊始，日子过得平淡如水，直到父母决定自驾带我回到阔别五年的四川老家。自驾回乡听起来十分惬意自由，对我而言着实是一种煎熬。历经十几个小时的艰辛，我们终于临近了四川地界。高速公路两旁群山环绕，行在途中忽然起雾，缥缈的雾霭不请自来，一如相交多年的故友，一别经年，熟悉而又陌生。

远近的山峰形影绰绰，偶尔，几座爬满青苔的旧屋被雾气遗忘在路旁，那苍然的翠色是时间的刻痕，引人遐想万千。或闻几声清脆的鸟鸣，宛转悠扬，萦绕心头，在一片茫茫中不知来处，只忆起一句诗：“月出惊山鸟，时鸣春涧中。”山中朦胧的清晨，此刻也显得缠绵悱恻起来。

到了家乡的镇上，人声鼎沸，熙来攘往，人们为了春节四处忙碌。汽车只能蜗行牛步，鸣笛也少有人理睬。街道上彩旗飘飘，很多人背着各式各样的背篓用以装物，他们行走在现代建筑间，在我看来多少有点格格不入。汽车驶出镇子，行过山路，掠过田野，一路上是大片的空旷，没有了城市间林立高楼的阻拦，所见之景都变得截然不同。汽车停在邻居的房前，我们下了车。翻上小坡，穿过一丛竹林，终于到了家。

家中有不少亲人，大家都十分热情，奈何我在昆山长大，早已不通乡音，只能勉强应答。左邻右舍也有亲戚，我的那位曾祖母颤颤巍巍地走来，她已有八十多岁高龄却仍然耳清目明，浑身的褶皱聚成了一条条脉络。我们都将活成这样，活成自己最温柔的样子。不远处的山坡上，一株老树孑然屹立，枝条向下垂去，像一只无力的手掌，似在嘲弄我的多思。

大概是当地的习俗，春节的前一天，二舅公等人骑着摩托载我们去扫墓。摩托风驰电掣，穿过曲折蜿蜒的羊肠小道，驾轻就熟地驶上山腰间的道路，活像一条游弋在水中的剑鱼。在一座高山边，人们把车停在路旁，径直走向前方。我在一阵诧异间跟上，荒山本无路，因为人们不断攀爬走出了一条泥泞的小路。松软的泥地极难着力，再加上坑坑洼洼间的浊水，在斜伸的泥道上，我有几次都险些失足。在半山腰的一片平地上茅草丛生，几只黑牛悠然吃草，浑似不入世的闲人。

一座坟冢立在中间，埋葬的是我的外曾祖母，墓旁荆棘丛生。我们只能开出一条空道，舅公上前烧香焚纸，依次磕头。我看着萋萋坟冢，对这位印象中素未谋面的外曾祖母磕了三个头。随后大家拿出长串的鞭炮点燃，一时间噼啪作响，余音在群岚中回荡，似阵阵雷涛，久久不散。我凝视延的山际，望见嬉闹的云朵，觉得世事倒真如白云苍狗般变化莫测了。

在寒假的尾声里，颠簸的回家路上，我常常会想象隐居山间，平静淡然的生活。不过，那也只是想想。

25 Jinjiang Road

Nanjing

June 12,2011

Dear Yu Xin,

Glad to have got your letter. It makes me exciting that you are coming to

Nanjing and stay here for a week. I think we can meet each other and have a good

time together. Now, let me tell you something about Suzhou. Suzhou is famous for

its beautiful gardens. According to official datas, there are more than100 in

total. They have enjoy great popularity in history for a long time. Among them,

the Tiger Hill is my favorite. Thousands of years ago, a king was said to be

buried there with his treasure. For such a long time, many people explored these

treasure but nobody have found. Except for this legend, the scenery there is

beautiful and we can enjoy it there. I have taken some pictures there, and I

will send you some via e-mail. Suzhou is worthy of visting. I am look forward to

your coming early.

Truely yours,

Shi Yang

01

莽莽从从，追随别人的脚步，过一天是一天的生活。

每个人都有自己的生活方式，不乏有人总模仿别人，身边有这样的一个人，我们称她为N姑娘。N姑娘在做许多决定的时候，常常瞻望别人，举棋不定，别人不做她绝不会去涉足，别人做她必跟随，随后便总吐槽和埋怨，说悔不当初，说受罪。我们不否定人有时候会口是心非，但对于N姑娘来说，口是心非已成家常便饭。最深刻的一次是，老友聚会时，大家相互邀请和约定，她借口说出门在外赶不及，让我帮她圆场，我理解她不喜聚会，也帮她圆场，毕竟这是他人之愿。当我准备起身赶往聚场时，她说了句让我大吃一惊的话，她说，和没有感情的人聚在一起也没有意思，浪费时间和金钱，绝不会出席。听后，我也无语。当我到达会场时，她也来了，打听到聚会的地方，假装匆忙赶来。原因很简单，不用花钱的聚会，不来白不来。她总无时在抱怨，损人无底限，也对八卦感兴趣，时常打着关心的旗号窥探别人的隐私。面对别人这样的问题，我们避他人之短，取他人之长，不要有一天也成为自己曾经讨厌的人，对喜欢的人好一点，对讨厌的人，保持基本的礼貌，不刻意去区别对待。

02

别人帮你是情分，不帮你是本分。

大概生活里，有很多的事情就是自以为理所当然，要别人帮忙还理直气壮。家庭作业自己没有了解清楚，抱怨同行的人没有告知；与他人借东西，没借到还理直气壮在背后吐槽；···生活中这样的例子很多，都发生在我们身边，很多时候，许多人似乎将有求于人和得到别人的帮助两方颠倒过来，被帮人说话一点也不客气，态度一点都不诚恳，别人不帮你是本分。

03

时间和金钱，钱重要还是时间重要？l

许多时候，为了省钱，我们失去时间去做更有意义的事情。比如为了抢购打折品，熬到半夜去参加抢购，结果牺牲了休息时间，有可能还收到不满意的抢购品。

当金钱和时间权衡好，两者会达到质的变化，也会让我们得到意外的收获。

I have a sister Marry. She is 16 years old now.She is a beauty whose height is 163 cm.My sister has a round face and short BOB hair. She have a pair of big eyes and they look very beautiful.She has a small mouth with two thick and red lips. All of us see her will like her.

Now, she has many hobbies.For example,she like swimming and jogging.She is a senoir high shcool student .So she like study.She often says, knowlege makes her stronger.

My sister dreams to be a designer. I believe it will come ture.

古人云：槐花黄，举子忙。

今人语：考考考，老师的法宝，分分分，学生的命根。

如今，一年一度的高考又拉开了帷幕，一场没有硝烟的战争又打响了。

回望两年的高中生活，有喜有悲，有甜有苦。我奋斗了一个高一，迷惘了一个高二。明天，就在明天，高三的学哥学姐们光荣的走出考场的那一瞬间，我就是高三的学生了，我不知道该怎样度过黑暗的一年，也不知道我的大学在哪，是不是海市蜃楼，转眼稍纵即逝。

我自从分科之后，就没有了目标。从小学二三年级开始，我就立志要考军医大，这个目标支持着我，鼓励着我，一直打拼到高一。可是我被高中物理吓倒了，主要是分数令我不满意，我的目标是90分以上，可考试成绩总是在6080间徘徊，所以，我退缩了，我最终选择度文。可是，我不喜欢文科，尤其讨厌政治，上周我们测试政治，我又只考了76分，我要准备补考了。我不知道到底该如何面对我的成绩、我的高三、我的高考我完全没有了目标。爸爸让我读法律，妈妈叫我上师范，可是我不知道我到底要什么。我想学日语，可我不干和爸爸说，因为我知道他一定会反对的，他们很讨厌日本，我的同学们也都很讨厌日本。可我对日本有一种难以言说的向往和喜爱，可能是动画片看多了吧。

我到底该怎么办？我的未来在哪，我看不见啊！

[关于高中趣味生活作文5篇

I was born in a small village, so that my childhood mostly spent in countryside. Althought the condistions were not so good, my childhood was happy and interesting.

At that time, we didnt have much money to buy toies. Therefore, almost all of my toies were made by myselfe or my mates.

Sometimes, my father would make some toies for me. Besides, because my parents were busy with their farmwork, I usually helped them do some work after school, especially the housework.

I wanted to relieve some burden of them. I was happy in my childhood. Even now, I usually recall the beautiful memories of my childhood.

[英语作文我的童年生活

There is a saying that man proposes, god disposes, which means man plan the

things and the rest of the outcome lies in the luck. This saying reflects the

connection between hard-work and luck, which is though sometimes we have worked

so hard, luck occupies great position, the unexpected things happen and refrain

us from succeeding. In order to be successful, people work so hard, they believe

they can achieve their goals, but lacking luck stops them achieving their goals.

So working hard doesn’t mean bringing people success directly, they just need to

try more times, without luck, they still can make their goals. Luck can help

people close to success, without hard-work, they can’t be successful. Hard-work

and luck make people realize their goals, but without luck, people still can

make it by trying more times.

In the weekend, I like to go shopping with my mother. We buy a lot of

things, I choose all kinds of snacks, such as candy, milk, sometimes my mother

protects me buying too much candy, she says it will do harm to my health. Though

I am not happy, I accept it. Going shopping with my mother makes me so

happy.

As soon as everyone steps into junior middle schools, English plays an important role in our daily life. Whats more, with China entering the WTO, English has become the most popular foreign language in China. As a student, I think everyone should have a good knowledge of English. However, nowadays the majority of students have great difficulty in learning English. How does the problem come about? For me, I am into English. In my opinion, the reason is that a great many students have no interest and confidence in learning English.

So, I think it is important to develop an interest in English and to remember that patience is the key to learning English. Then try your best and take every chance to communicate with others in English. Besides, by listening to English tapes you may make great progress. I suggest buying some English magazines and newspapers, such as English Weekly, the best among them, which will help you a lot.

Do as I have said above, you will be successful sooner or later.

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.