介绍贡柑作文议论文800字高中【一】
本来漂亮的地球，现在却是千疮百孔，到处都弥漫着难闻的气息，一个治好眼睛的小朋友看到这样的画面，忍不住向妈妈哭诉这不是我看到的地球妈妈今天在公交车上看到这则公益广告时，我的心里受到了震撼。
一个很期待得到光明的女孩却因为治好后看到美丽的地球变成这样，居然伤心不已，那么我们呢！不为地球如今这个现状感到痛心吗？难道我们还是一味的等待着地球的资源走向枯竭吗？
在现今，优于人们无穷无尽地开采资源，大自然遭到了严重的破坏。为了拯救奄奄一息的地球，世界各地都纷纷号召人们保护环境、珍惜自然，我也参与其中并乐在其中。
一个星期天，我在家里发现有许多废旧塑料、纸张各种各样，但它们都是相同的待遇送去垃圾场。我心想：这些物品都能循环时用，如果不能物尽其用真是太可惜了，何不做一个可分类的垃圾箱呢？对！说干就干！首先，像别的大城市的垃圾桶那样，做两个箱，非为可回收垃圾不可回收垃圾，涂上一些颜色后让人容易分辨，垃圾箱就完成了。我的杰作诞生，家人也慢慢接受了，还真给全家带来不少好处呢：我家离倒垃圾的垃圾场很远，又没有人上来收。
每次妈妈拿着大包小包的垃圾去倒是，汗流浃背，气喘吁吁，现在轻松多了，别人问妈妈为什么用这么少垃圾，当他们知道变废为宝的好处后，还要向我们学习呢。
此外，我觉得光是进行垃圾分类还不够，还要尽力地节约谁资源。
在家里，妈妈洗脸的刚想倒掉时，我阻止了她，并说水还可以循环使用，不要浪费；在学校，那个水龙头滴水，我一定把它拧紧。万物之泉，水，不得不珍惜。
如果全省、全国，乃至全世界，每人都节约一点，那将节约多少呀。我长大以后，一定研究环境，去保护我们那美丽的地球。
介绍贡柑作文议论文800字高中【二】
对比用例就是同时运用一正一反的事例来论证自己的观点，这样运用事例比较全面辨证，更富说服力。如高考优秀作文《外表与内在》中的对比用例。
当然，我们认识事物总是从外表入手的，但外表并不代表本质。有人外表美丽，内心却很污浊；有人肢体残缺，却有一颗金子般的心灵。演员出身的江青，她外表的美丽可以说倾国倾城，但在这美丽的外表掩盖下的`却是毒辣的心肠，篡权夺位、祸国殃民的心肝。与其相反，高位截瘫的张海迪，凭借着与病魔抗争的毅力，在病床和轮椅上依然抒写着自己璀璨的人生，成为世人敬仰的楷模。我想，任何事物的内含都需要去分析，像茶一样去品味，才能品味出其中的志趣、风格和精神，品出其内在的生机、兴旺和顽强，由此感染你，让你拥有更多的激情去投入生活。
文章运用江青、张海迪一反一正事例，来论说“我们认识事物总是从外表入手的，但外表并不代表本质”，深刻令人信服。
对比用例强调的是对比论证，在运用时一定要选用对比明显的事例，事例叙述要精当不能罗嗦。
介绍贡柑作文议论文800字高中【三】
1） Many nations have been faced with the problem of ……
2） Recently the problem has been brought into focus.
3） Recently the phenomenon has become a heated topic.
4） Recently the issue has aroused great concern among ……
5） Nowadays there is a growing concern over ……
6） Never in our history has the idea that …… been so popular.
7） Faced with ……, quite a few people argue that ……
8） According to a recent survey, ……
9） With the rapid development of ……,
10 When it comes to…, (当说到…
二、列举观点
I.Some people think/believe that…,
Other argue/claim that the opposite/reverse is true
1．Obviously television has both advantages and disadvantages．
2．Living in a city has both advantages and disadvantages．
3．Compared with cars，bikes have their advantages and disadvantages． ，
4．Although computers bring people a lot of convenience，they have many disadvantages．
5．．．．has many advantages．For example，…
6. However，just as every coin has two sides，…has it’s disadvantages．
II…play(san important role／part in……
1．Computers play an important role in science and technology．
2．Computers play a more and more important role in our life．
3．Computers play an increasingly important role in our studies．
4．Education plays an important part in developing our mind．
5．Addiction to alcohol and drugs plays a role in homelessness．
6．Advertisement plays an informative role in our daily life．
7．In the past，letters played a decisive role in long-distance communication．But now，telephone，email，and fax have taken their place．
III．With the development of…
1．With the development of our economy，many Chinese families can afford a car.
2．With the development of our economy and society，pollution is more and more serious．
3．With the rapid development of Science and technology，people can get a college degree by taking online-courses at home．
4．With the current social and technological developments，employees with more knowledge and higher academic degrees are needed.
5．With the rapid increase of China's population，housing problem is becoming more and more serious．
6．With more and more women entering the society，people's attitude towards women is changing．
7．With the deepening of Chinese reform and opening up, an increasing number of (a growing number of，a significant number of
families can afford a car．
三、陈述自己观点
There is probably some truth in both arguments／statements，but…
四、批驳
1）It is true that ……, but one vital point is being left out.
2） There is a grain of truth in these statements, but they ignore a more important fact.
3） Some people say ……, but it does not hold water.
4） Many of us have been under the illusion that……
5） A close examination would reveal how ridiculous the statement is.
6） It makes no sense to argue for ……
7） Too much stress placed on …… may lead to ……
8） Such a statement mainly rests on the assumption that ……
9） Contrary to what is widely accepted, I maintain that ……
10） No one can deny the fact that ……
11） The idea is hardly supported by facts.
12） Unfortunately, none of the available data shows ……
13） Recent studies indicate that ……
14） There is sufficient evidence to show that ……
15） According to statistics proved by ……, it can be seen that ……
五、结尾句型 ：
英语议论文多以简要总结全文或对所讨沦的问题提出解决办法来结尾。总结全文时除常用到in one/a word，generally speaking，to conclude等外，没有固定模式。提出解决办法时却常使用下一句型：
1） From what has been discussed above, we can draw the conclusion that ……
2） It is high time that strict measures were taken to stop ……
3）. We should take measures to control the rapidly increasing world population．
4）. We’d better take effective measures to prevent students from cheating on exams．
5）. The government decided to take strong measures against drug abuse．
6）. Urgent measures should be taken to prevent terrorists from carrying out further attacks．
7） It is necessary that steps should be taken to ……
8） In conclusion, it is imperative that ……
9） There is no easy method, but ……might be of some help.
10） To solve the above-mentioned problem, we must ……
11） In summary, if we continue to ignore the above-mentioned issue, more problems will crop up.
12） With the efforts of all parts concerned, the problem will be solved thoroughly.
13） We might do more than identify the cause ; it is important to take actions to ……
14） Taking all these into account, we ……
15） Whether it is good or not /positive or negative, one thing is certain/clear……
六、其他句型
I、There be结构
There+be+主语+(修饰成分，表示客观存在的'人或事物。 There must be a lot of fuel in the tank．
There remains nothing more to be done．
There is no point in talking about it again．
There is something you don't know．
There is not enough time to do the work． ．
II、名词化结构
名词化结构用以表明抽象思维的逻辑性和概念化，从而使语体更加正式、更加具有书面语风格。
1．由of连接主谓关系
That the earth revolves around the sun causes the changes of the seasons.
名词化：The revolution of the earth around the sun causes the changes of the seasons．
2．由0f连接动宾关系
One of the most important natural phenomena is that energy is transmitted from one point to another in waves.
名词化：One of the most important natural phenomena is the transmission of energy from one point to another in waves．
3．用of连接含有by的短语，把简单句转换成名词短语
