雅思优秀议论文中的“三明治”结构
五大雅思议论文写作句式及例句
五大雅思议论文写作句式及例句在雅思议论文写作中，写作句式非常重要，一旦考生掌握，便能灵活应用于无形，雅思写作高分便不在话下。
下面，环球雅思搜集整理了五大雅思议论文写作句式及例句，供参考，希望大家能认真研读。
环球雅思愿与你分享每一篇好文章。
雅思议论文第一句式：平行结构1. 文化不仅是人类文明的结晶，也是社会发展的基石基本句式：Culture is not only the crystallization of human civilization, but also cornerstone of social development.高级句式：not only is culture crystallization of human civilization, but cornerstone of social development. （倒装句，押韵3c）2. 广告的确使得我们的日常生活更加多彩，方便、舒适例句：Advertisements do make our day-to-day lives more colorful, convenient and comfortable.（句式：三个平行结构+强调+押头韵3c）3. 各种博物馆长久以来记录了历史、传承了文化、教育了任务、娱乐了大众Various museums have been(用现在完成进行时态表示长久以来) recording the history, transmitting the culture, education people and entertaining the public.4. 做兼职工作孩子可以学到许多书本之外的东西，如团队合作精神、竞争意识、交流技能、时间管理、坚韧等Taking part-time jobs, children can acquire much out of textbooks such as team-work spirit, sense of competition, communication skills, time management and toughness, to name just a few.5. 媒体正在改变着我们的生活、工作、学习、娱乐与思考与看待世界的方式Media are changing /altering/transforming /revolutionizing the way we live, work, study, play, think and view the world.雅思议论文第二句式：从句1. 什么叫句子：表达清晰、结构完整2. 从句是不是句子：不是，从句是句子的某成分3. 每类从句因何得名：位置或在句子中的成分1）FORMULAR雅思议论文写作公式①That+完整句=N 可做主语、宾语、表语、同位语②完整句：Ignorance added to a stong character is a double curse and stupidity joining hands with stubbornness is twice stupid.无知与傲慢在一起则会祸不单行，愚蠢与固执联手则令傻气横流上一句+is well-known 易头重脚轻，——it is well-known that Some assert that+The focus is that+Many people fail to realize that +雅思议论文第三句式：不定式做插入语1. To begin/start with2. To sum up3. To summarize/conclude4. Sad to say 令人遗憾的说5. Needless to say 不用说6. To cut a story short 长话短说7. So to speak譬如....a is to b what c is to d8. To illustrate = for example 例如9. To be fair 说句公道话10. To be precise/exact11. To be more specific详细的说12. To put it like this 这么说吧13. To put it differently = in other words14. To put is from another angle15. To be frank16. To tell the truth17. That is to say 也就是说18. To be rough简略的说雅思议论文第四句式：双重否定It is not rate to see并不罕见总之：never fail to doMedia never fails to fascinate peopleBe never withoutBe addicted to = be indulged to第五句式：六大强调句式1. Do/does/did+v2. 双重否定表示情调3. What引导的主从表强调4. 倒装表示强调5. Nothing表示强调6. It is that/who 表示强调例句：Time matters!Time does matterTime never fails to matter.Never does time fail to matter双重强调+倒装以上即是本次环球雅思向各位烤鸭们介绍的五大雅思议论文写作句式及例句，值得大家反复研读并用于写作中，这些都是雅思议论文写作中的亮点和家分店，大家千万不可小视了。
三明治批评法
三明治批评法三明治批评法是一种常用的辩论和评论方法，它的名字来源于一种常见的食物——三明治。
三明治由两片面包夹着中间的馅料，每一层都起到了重要的作用。
类似地，批评法中的每一层也都有自己的功能，综合起来能够对一个问题进行全面的分析和评价。
我们来看看三明治批评法的第一层——正面评论。
正面评论是指对被批评对象的优点和积极方面进行评价。
这一层的作用是为了让听众或读者对被批评对象有一个积极的印象，为后续的批评建立信任和共鸣。
以政府工作为例，我们可以先夸奖政府在某些方面取得的成就，比如经济发展、社会稳定等。
这样一来，我们就能够让读者觉得我们对问题有客观的认识，不是一味地批评。
接下来是三明治批评法的第二层——批评。
批评是对被批评对象的缺点和问题进行指出和分析。
这一层的作用是为了引起读者的注意和思考，让他们认识到被批评对象存在的问题和不足之处。
在政府工作的例子中，我们可以指出政府在一些方面存在的问题，比如官僚主义、腐败等。
通过对问题的深入分析和解释，我们可以让读者对这些问题有更清晰的认识，并对其产生共鸣和关注。
最后是三明治批评法的第三层——再次正面评论。
再次正面评论是对被批评对象的改进和发展提出建议和期望。
这一层的作用是为了让读者看到问题的解决方案，并对未来的发展充满希望和期待。
在政府工作的例子中，我们可以提出一些建设性的建议，比如加强监督制约、推行透明治理等。
通过这些建议，我们可以让读者看到问题的解决方案，以及政府未来可能采取的改进措施。
总结起来，三明治批评法是一种有效的辩论和评论方法，它能够全面地分析和评价一个问题。
通过正面评论、批评和再次正面评论三个层次的结合，我们能够在批评中保持客观和中肯，同时也能够提出解决问题的建议和期望。
无论是在辩论中还是在日常生活中，三明治批评法都是一个非常实用的工具，它能够帮助我们更好地表达自己的观点，同时也能够提高我们的思维和表达能力。
关于食物三明治的英语作文
关于食物三明治的英语作文## Sandwich: A Delectable Culinary Creation.A sandwich, a culinary marvel, is a dish that has become an integral part of our lives, transcending geographical and cultural boundaries. Its versatility and adaptability have solidified its status as a staple food enjoyed by people of all ages and backgrounds.The origin of the sandwich remains shrouded in mystery, but its invention is often attributed to John Montagu, the fourth Earl of Sandwich. Legends suggest that, while engrossed in a gambling game in the 18th century, Montagu requested his servant to bring him meat tucked between two slices of bread to prevent him from interrupting the game to eat. Thus, the legendary sandwich was born.Over the centuries, the sandwich has evolved into myriad forms, each with its distinctive flavor and character. From the classic BLT to the sophisticated CroqueMonsieur, from the humble grilled cheese to the elaborate Reuben, the sandwich has become a blank canvas for culinary creativity.What Constitutes a Sandwich?While myriad interpretations exist, a sandwichtypically consists of two or more slices of bread with various fillings sandwiched between them. The fillings can range from meats and cheeses to vegetables and spreads, creating an endless array of flavor combinations.Types of Bread.The choice of bread used in a sandwich plays a crucial role in determining its texture and overall taste. Common types of bread used for sandwiches include:White bread: Soft, plain, and versatile, white bread is a popular choice for many sandwiches.Whole wheat bread: Healthier and more nutritious thanwhite bread, whole wheat bread adds a nutty flavor and texture to sandwiches.Rye bread: Dense, flavorful, and slightly sour, rye bread is an excellent choice for hearty sandwiches.Sourdough bread: Characterized by its tangy flavor and chewy texture, sourdough bread elevates sandwiches to a gourmet level.Essential Sandwich Components.Beyond bread, several other components are essential for creating a well-crafted sandwich:Protein: Meat, poultry, fish, tofu, or beans provide the protein component of a sandwich, contributing to its satiety.Cheese: A variety of cheeses, such as cheddar, mozzarella, Swiss, or provolone, add flavor, texture, and richness to sandwiches.Vegetables: Fresh or cooked vegetables, such as lettuce, tomatoes, onions, and cucumbers, provide vitamins, minerals, and a crisp texture to sandwiches.Spreads: Mayonnaise, mustard, ketchup, and hummus are just a few examples of spreads that add flavor and moisture to sandwiches.Assembling a Sandwich.Assembling a sandwich is an art form that requires careful consideration and attention to detail. To create a harmonious sandwich, follow these steps:1. Start with two slices of your chosen bread.2. Spread a thin layer of your preferred spread on one slice of bread.3. Arrange your protein, cheese, and vegetables on the spread-covered bread.4. Place the remaining slice of bread on top, gently pressing down to ensure the fillings are evenly distributed.5. Slice the sandwich diagonally or into triangles for an elegant presentation.Conclusion.The sandwich, a culinary masterpiece, has captured the hearts and taste buds of countless individuals worldwide.Its versatility allows for endless variations, making it a beloved dish that transcends cultures and generations. Whether enjoyed as a quick and convenient meal or savoredas a gourmet delicacy, the sandwich remains a timeless classic that continues to delight palates near and far.## 三明治，令人愉悦的烹饪杰作。
雅思大作文真题解析：食用异地食品有好处吗
雅思大作文真题解析：食用异地食品有好处吗对于雅思作文，想提升自己的写作能力的同学，可以参考一下雅思真题的优秀范文，那么接下来就和来看看雅思大作文真题解析：食用异地食品有好处吗？“In many countries， people can eat a wide variety of food grown in other areas today. As a result， they eat more food from other regions than local food. Do you think the advantages of the development outweigh disadvantages？”解析&审题本题是2016年8月13日的原题重现，与2017年5月13日的真题也基本相同。
当今是全球化时代，我们的日常生活中充满了外来的元素，只不过我们很少去关注：我们穿的衣服，吃的食品，乘坐的汽车或者飞机，几乎没有什么东西没有外来的痕迹。
那么，在这个大背景下，我们该如何讨论本次雅思写作话题呢？关于食用更多外来食品，而不是本地食品，就如使用其他产品一样，肯定是利弊参半。
好的地方，无非是丰富了我们的食物选择，改善了我们的营养结构，这是从消费者个人而言的。
那么，对于整个食品产业，无疑会增加产业的竞争，从而提升服务质量，但是坏处也由此而产生：如果消费者大量食用外来食品，这无疑会挫伤国内食品产业的发展。
谈及个人观点，我们可以这样认为，虽然在短期内国内食品产业可能受损，但是从长远看，竞争导致提高，从而可以促进国内食品产业走向世界，因此反而变成一件好事，由此得出结论：消费者食用外来食品，无论对个人还是对整个食品产业，都是一件好事。
[批判性思维提示] 本题的核心是：食用外来食品（而非本地食品）到底是好还是坏？唐老师的思路是分两种情况来讨论：对消费者而言，这是增加了食品选择，改善了营养结构，当然是好事；对本地食品业而言，则可能产生负面的影响。
三明治法则的例子和解释
三明治法则的例子和解释三明治法则也称为三明治原则或夹心饼干法则，是指在给予他人批评或反馈时，先给予肯定或积极的评价，再提出需要改进的意见，最后再以积极的态度结束。
这个原则可以有效地提高沟通效果，减少冲突和伤害感。
下面是几个关于三明治法则的例子和解释：例子1：肯定-批评-肯定肯定：你做的ppt设计很棒，颜色搭配很出色。
批评：但是，我觉得字体大小不太合适，文字比较难以阅读。
肯定：不过，整体来说，你的设计还是非常出色的。
解释：在给予反馈时，首先给予对方积极的评价，让他们感受到肯定和赞赏。
然后提出需要改进的意见，指出具体的问题。
最后再次肯定对方的优点和努力，以保持积极的态度。
例子2：肯定-建议-肯定肯定：你在这个项目上投入了很多时间和精力，非常值得肯定。
建议：我认为你可以进一步改进这个部分的细节，比如增加一些图表来支持你的观点。
肯定：但是无论如何，你已经做得非常出色了。
解释：在给予建议时，先表达对对方努力的认可和赞赏。
然后提出具体的建议，指出改进的方式或方法。
最后再次肯定对方的努力和成果，以保持对对方的支持和鼓励。
例子3：肯定-反馈-肯定肯定：你在小组讨论中的发言很有深度，提出了很多有价值的观点。
反馈：不过，我注意到你有时候会打断别人的发言，这影响了大家的交流。
肯定：但是无论如何，你的参与对小组的进展起到了积极的作用。
解释：在给予反馈时，先夸奖对方的优点和贡献，让他们感受到肯定和认可。
然后提出需要改进的问题或行为，并指出可能带来的负面影响。
最后再次肯定对方的贡献和作用，以保持对对方的尊重和支持。
总而言之，三明治法则在沟通中起到了缓冲和平衡的作用，能够减少伤害感和冲突，并提高反馈的接受度和效果。
它可以用于各种交流场景，无论是工作、家庭还是日常生活中。
英语小作文高中三明治结构
英语小作文高中三明治结构The Three-Part Structure of a High School EssayWriting an effective essay is a crucial skill for high school students to master. One of the key elements of a well-structured essay is the three-part format commonly referred to as the "sandwich" or "three-part" structure. This organizational framework consists of an introduction, body paragraphs, and a conclusion. By understanding and applying this structure, students can create essays that are clear, cohesive, and compelling.The introduction is the first part of the essay and serves as the "top slice of bread" in the metaphorical sandwich. This section should capture the reader's attention and provide essential context for the essay's topic. A strong introduction typically includes a hook, background information, and a clear thesis statement. The hook is an opening line or two that draws the reader in and makes them want to continue reading. This could be an interesting fact, a thought-provoking question, or a vivid description. The background information then sets the stage by providing relevant context aboutthe topic. Finally, the thesis statement presents the main argument or focus of the essay in a clear and concise manner.The body paragraphs make up the "filling" of the essay sandwich. These paragraphs develop and support the thesis statement presented in the introduction. Each body paragraph should focus on a single idea or argument and be structured with a topic sentence, supporting details, and a concluding sentence. The topic sentence introduces the main point of the paragraph, while the supporting details, such as examples, facts, or analysis, build upon and reinforce that point. The concluding sentence then ties the paragraph together and transitions to the next idea.Effective body paragraphs follow a logical flow, with each paragraph building upon the previous one to create a cohesive argument. Transitions between paragraphs are crucial to ensure smooth progression and help the reader follow the essay's logic. Common transition words and phrases include "in addition," "moreover," "on the other hand," and "in conclusion."The conclusion, or "bottom slice of bread," is the final part of the essay. This section should summarize the main points made in the body paragraphs and reinforce the thesis statement. A strong conclusion leaves the reader with a clear understanding of the essay's central argument and its significance. It may also include acall to action, a prediction, or a final thought-provoking statement.In addition to the three-part structure, there are several other elements that contribute to a well-written high school essay. Proper grammar, spelling, and punctuation are essential to ensure the essay is clear and professional. The use of relevant and reliable sources to support the essay's claims is also crucial, as is the ability to analyze and synthesize information from those sources. Lastly, the essay should have a consistent and appropriate tone that reflects the writer's purpose and audience.By understanding and applying the three-part structure of an essay, high school students can develop the skills necessary to write clear, coherent, and compelling pieces. The introduction, body paragraphs, and conclusion work together to create a well-organized and persuasive essay that effectively communicates the writer's ideas. With practice and dedication, students can hone their essay-writing abilities and become confident and successful communicators.。
怎样制作美味三明治英语作文
怎样制作美味三明治英语作文Sandwiches are a versatile and convenient food that can be enjoyed for breakfast, lunch, or even dinner. They are easy to prepare, portable, and can be customized to suit individual tastes. In this essay, we will explore the steps to creating delicious sandwiches that will satisfy your cravings and impress your friends and family.The foundation of any great sandwich is the bread. Whether you prefer white, whole wheat, sourdough, or a specialty bread, it's important to choose a sturdy and flavorful option that will hold up to the fillings. When selecting your bread, consider the texture and thickness that will best complement the other ingredients. Toasting the bread can also add a delightful crunch and depth of flavor.Next, it's time to choose your fillings. The possibilities are endless when it comes to sandwich ingredients, so feel free to get creative. Classic options like sliced meats, cheeses, and vegetables are always a safe bet, but you can also experiment with more unique ingredients like roasted red peppers, pesto, or even fruit. When building your sandwich, be sure to layer the ingredients evenly toensure a balanced flavor in every bite.One key element to a delicious sandwich is the condiments. Condiments not only add flavor but can also help hold the sandwich together and prevent the bread from becoming soggy. Popular choices include mayonnaise, mustard, ketchup, and even hummus or avocado spread. Be mindful of the flavors you're trying to achieve and choose condiments that will complement the other ingredients.To take your sandwich to the next level, consider adding some crunch or texture. This could be in the form of crisp lettuce, crunchy pickles, or even a sprinkle of toasted nuts or seeds. The contrast of textures can make for a truly satisfying and enjoyable eating experience.Another important aspect of creating a delicious sandwich is the temperature of the ingredients. Warm fillings like grilled chicken or melted cheese can be a delightful contrast to the cool, crisp bread. Conversely, cold fillings like tuna salad or sliced tomatoes can be a refreshing complement to the toasted bread.When assembling your sandwich, be mindful of the order in which you layer the ingredients. Typically, you'll want to start with the bread, then add any condiments or spreads, followed by the main fillings, and finally any additional toppings or garnishes. This willensure that the flavors and textures are evenly distributed throughout the sandwich.One final tip for making the perfect sandwich is to use high-quality, fresh ingredients. Invest in the best quality meats, cheeses, and produce you can afford, as they will make a significant difference in the overall taste and quality of your sandwich.In conclusion, creating a delicious sandwich is a simple yet rewarding task. By focusing on the quality of your ingredients, the balance of flavors and textures, and the proper assembly, you can craft a sandwich that will satisfy your taste buds and leave you craving more. So, the next time you're in the mood for a satisfying meal, consider whipping up a homemade sandwich that will truly delight your senses.。
介绍牛排三明治英语作文
介绍牛排三明治英语作文Title: A Culinary Delight: The Steak Sandwich。
Introduction:The steak sandwich, a classic combination of succulent steak nestled between slices of bread, has long been a favorite among food enthusiasts. Its rich flavors and satisfying textures make it a popular choice for casual dining or a hearty meal on the go. In this essay, we will delve into the origins of the steak sandwich, explore its variations, and celebrate its status as a beloved culinary creation.Origin and History:The exact origins of the steak sandwich are somewhat murky, but it is believed to have originated in the United States in the early 20th century. As the popularity of steak grew, particularly in regions like Philadelphia andNew York City, it was only natural for someone to conceive of placing it between two slices of bread for a convenient and satisfying meal.Variations:One of the beauties of the steak sandwich is its versatility. While the basic concept remains the same—a grilled or pan-seared steak served between bread—there are countless variations to explore. Here are just a few:1. Classic Philly Cheesesteak: Originating from Philadelphia, this iconic sandwich features thinly sliced steak, usually ribeye or top round, sautéed with onions and topped with melted cheese, typically provolone or Cheez Whiz, all stuffed into a long, crusty roll.2. Steak and Mushroom Sandwich: For a gourmet twist, steak can be paired with sautéed mushrooms and onions, along with a creamy sauce like béarnaise or aioli, all sandwiched between slices of toasted ciabatta or sourdough bread.3. Southwestern Steak Sandwich: Inspired by flavors of the American Southwest, this variation might includegrilled steak seasoned with chili powder and cumin, topped with avocado, salsa, and a dollop of sour cream, served on a toasted bolillo roll or cornbread.4. Surf and Turf Sandwich: For an indulgent treat, steak can be paired with seafood such as shrimp or lobster, along with lettuce, tomato, and a drizzle of garlic butter, all piled high on a buttery brioche bun.Preparation and Serving:The key to a delicious steak sandwich lies in the quality of the ingredients and the preparation method. Here are some tips for creating the perfect steak sandwich:1. Choose a high-quality cut of steak, such as ribeye, sirloin, or filet mignon, and season it generously with salt, pepper, and any desired herbs or spices.2. Cook the steak to your preferred level of doneness—whether rare, medium-rare, or well-done—using a grill, stovetop, or broiler.3. Allow the steak to rest for a few minutes before slicing it thinly against the grain, which helps to ensure tenderness.4. Toast the bread lightly to add a crisp texture and prevent it from becoming soggy when assembled.5. Layer the steak onto the bread along with any desired toppings or condiments, then serve immediately while still warm.Conclusion:In conclusion, the steak sandwich is a culinary delight that has stood the test of time. From its humble origins to its diverse range of variations, it continues to captivate the palates of food lovers around the world. Whether enjoyed as a quick lunch or a satisfying dinner, the steaksandwich remains a timeless classic that satisfies both the appetite and the soul.。
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雅思优秀议论文中的“三明治”结构写雅思大作文就如同在建筑一座大楼一般。
首先是进行大楼结构设计，然后再进行实际的建筑工程，最后经过装修而成为耐用而漂亮的大楼。
良好的结构对于大楼的实用以及美观有着非常重要的作用。
同样道理，良好的作文结构也将提高文章的质量和成绩。
从一定意义上来说，优秀的作文结构可以使内容条理清晰易懂，还可以弥补语言表达上的不足。
议论文的整体结构一篇好的议论文一般由三个部分构成，分别是导语段（Introduction），主体段落（Body）与总结段（Conclusion）。
这个结构很像三明治，其中导语段与总结段就像最上层和最下层的面包，而主体段落为论证段，相对较为重要，就像三明治中间的肉和菜。
其结构如下图所示：IntroductionBodyConclusion通常情况下按照实际的需要，中间的主体部分（Body）又可以分成二到四个段落，其结构图分别如下：IntroductionBody Paragraph 1Body Paragraph 2Body Paragraph 3*Body Paragraph 4*Conclusion(注：*段落视需要而增加)由于导语段中最重要部分是中心句（Thesis statement），它是全文的立足点，决定文章的发展方向，覆盖全文；段落主题句（Topic sentence）是每一段的重点，覆盖各自所在的段落。
因此，我们可以通过思考后得出议论文的中心句（Thesis statement）以及各主体段落主题句（Topic sentence）。
此外，为求达到全文的统一性(Unity)和连贯性(Coherence), 考生们应当合理地安排中心句和各段的主题句的关系，使得中心句覆盖全文，使得各段的主题句很好地支持着中心句。
如果中心句没有覆盖主题句，说明正文偏题了。
如果中心句超过主题句，刚说明内容有遗漏，或者说内容不够全面。
中心句各段的主题句的关系情况可由下面三张图表示：ThesisStatementTopic Sentence 1Topic Sentence 2Topic Sentence 3*ConclusionThesis StatementTopic Sentence 1Topic Sentence 2Topic Sentence 3*ConclusionThesis StatementTopic Sentence 1Topic Sentence 2Topic Sentence 3*Conclusion其中，第一张图显示了正文内容超过了中心句内容；第二张图则相反；第三张图中正文内容与中心句题才是相吻合的。
（*号表示在双边型结构的文章中没有主体段的第三段。
）接下来我们通过实例来了解中心句, 主题句与总结段的布置。
比如:Topic1: Is it not necessary to learn the skill of cooking due to the success of convenience food and read-made meals?Thesis statement: But in my opinion, cooking is a very important ability we should not lose.Topic sentence 1: First of all, the fact is that ready-made meals are not usually that good for us.Topic sentence 2: Moreover, it is extremely important for children to learn how to cook, so that they will be fully independent when they grow up.Topic sentence 3: Speaking personally, I have always enjoyed experimenting in the kitchen, by cooking slightly unconventional meals.Conclusion: In conclusion, although some use of convenience food is natural, no one should rely on it exclusively at the expense of home-cooked food. Not only is this unhealthy but it is also threatening important skills with extinction.Topic 2: Who should be responsible for our old people?Thesis statement: In my essay I would like to note four different models. Topic sentence 1: Firstly, the company can be responsible for their retired employees.Topic sentence 2: A second solution is that the government has to have the responsibility for the old people’s care.Topic sentence 3: Another way of solving this problem is to give back the responsibility to the individual.Topic sentence 4: A last solution is to go back to the old model of the big family who cares for all their members.Conclusion: To sum up I have to admit that I can’t find a really good solution for this problem. All models have advantages and disadvantages. Certainly we will have to go on thinking.Topic3: Should students in high school study music as a compulsory school subject?Thesis statement: While some think the study of music in high school is a waste of valuable school time, musical training and study is an important part of educational development.Topic sentence 1: It is true that when it comes to the study and application of music, not everyone is suited.Topic sentence 2: On the other hand, it is quite well-known that music can play an important part in the development of the human brain.Conclusion: While not every student may be musically inclined, the study of music is a valuable inclusion in any student’s course of study. In addition to being excellent for mental growth and development, students of music learn discipline, persistence and patience. Music should be a compulsory part of a high school student’s education.议论文的段落结构与议论文的整体结构布置相类似，在段落的写作中我们也用“三明治”结构来进行写作，即把段落分为主题句(Topic Sentence)，支持部分(Supporting Sentences)和结尾句部分(Concluding Sentences)。
（注意：并不是每个段落都一定要有结尾句，重要地是要让这个段落自然地结束，不能给读者留下话还没有说完的感觉。
）段落结构如下图如示：PARAGRAPHTopic SentenceSupporting SentencesConcluding Sentence接下来我们通过实例来了解主题句，支持句与总结句的布置。
比如：1. Topic Sentence: First of all, the fact is that ready-made meals are not usually that good for us.Supporting Sentences: They contain high levels of salt and sugar, not to mention harmful preservatives and artificial colorants.Concluding Sentence: Therefore, a diet that is exclusively made up of such food is bound to be unhealthy.2. Topic sentence: Teenagers find many ways to drive their parents crazy.Supporting Sentence 1: First, they may dye their hair purple or they may shave their heads bald. They may also shred their new and expensive jeans and sit hours after hours in front of computers playing games or chatting with someone they never see.Supporting Sentence 2: In addition, they spend hours windowing-shopping and on the phone. They have time to watch TV, but they do not have time to do their homework.Supporting Sentence 3: Also, they are always too busy to clean their rooms, but they are never too busy to hang around in the streets.Concluding Sentence: It is hard to be a teenager, but it is even harder to be parent of one.3. Topic Sentence: In the second place, corporal punishment is by no means a desirable way of education a child.Supporting Sentence 1: Numerous studies have shown that it does far more harm than good to children in their mental as well as physical development. Supporting Sentence 2: For example, corporal punishment can give a child a sense of being treated unfairly, making him rebellious.Concluding Sentence: This will be detrimental to the molding of the child’s character, and therefore should be avoided.通过以上例子，我们可以清楚地把握雅思议论文结构（三明治结构），并可以通过练习一些雅思作文题目加以模仿，使得所写的文章结构良好，内容清晰、易读。