文档介绍：大作文的结构及写作方式
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两种类型
议论文 argument
说明文 report
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议论文
议论文一般针对的是题目中的一个话题 (some people think)，以及部分人对这个话题的想法(some people think, while others believe, 有些人认为。。。 当另外一些人认为)，然后要求你是不是同意或者是发表你自己的看法（I think this is correct/true; I disagree with this）。 这类题目通常会在题目中引述一个观点，然后要求你针对那个观点，进行写作。 议论文比较基于主观事实描述，一般来说，文章的主体是以 为什么而展开，，作者需要通过解释，论证从而达到一个比较合理的能够具有说服力的一个层次。 作者要展开自己的想法，并要通过论证，让读者认为你所写的是正确的，合理的。
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议论文
议论文通常有两种问法：
1. To what extent do you agree or disagree?? (你从多大程度上同意这个观点)
题目中一部分人只会提出对于某个问题所产生的一个看法。作者所要进行论证就是你是否同意这么一个看法
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Protecting wild animals is a waste of resources.
To what extent do you agree or disagree with this opinion?
Give reasons for your answer and include any relevant examples from your own knowledge or experience.
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结构：四段或五段
引言部分：提出主题（描述当前背景），改写复述题目，表明自己的观点，衔接下文。
正文第一段：原因1
正文第二段：原因2
正文第三段：原因3（可省略）
结尾：重申主题，建议措施，展望未来
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引言部分：提出主题（描述当前背景），改写复述题目，表明自己的观点，衔接下文。
As is known to all, the big contradiction between the limitation of land and the rapidly increasing demand for it causes an alarming headache of human beings. To improve the situation, some people suggest we instantly give up protecting wild animals, the reason for which, according to them, is simply that they believe there will be no spare places for the wild animals as their habitats in the 21st century, and thus it is nothing but a waste of resources to carry out the protection. As far as I am concerned, the so-called “suggestion” is extremely ridiculous and has no point at all.
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正文第一段：原因1
Just like human beings, wild animals are the indispensible part of the earth. The coexistence of animals and human beings creates harmony and brings about the vividness to our planet. An increasing number of people come to realize that the disappearance of animals will result in huge threat to the balance of ecosystem. If one species die out, it is inevitable that other species on the food chain will be put in very dangerous situ