雅思写作大作文Cause and effect是常见问题之一，对于这类问题，你需要陈述导致这个问题的原因并讨论其带来的影响，即讲原因，说影响。一般列举2-3个原因，2-3个问题所带来的影响。
　　写作实例Today more people are overweight than ever before.
　　What in your opinion are the primary causes of this?
　　What are the main effects of this epidemic?
　　这是一篇关于肥胖的大作文，对于Cause and effect类型问题，写作思路可参照如下：
　　Causes of obesity:
　　inactive lifestyle (relying on cars instead of walking, fewer physical demands at work, inactive leisure activities)
　　unhealthy eating habits (eating fast-food, drinking high-calorie beverages, consuming large portions of food, eating irregularly)
　　Effects of obesity:
　　physical health problems
　　loss of productivity
　　depressions and mental disorders
　　写作结构Introduction
　　Body paragraph 1 – causes
　　Body paragraph 2 – effects
　　Conclusion
　　1.Introduction
　　Write your introduction in two sentences:
　　Sentence 1 – paraphrase the statement (you can use ‘nowadays/today/these days’ to start):
　　Nowadays the number of overweight people is constantly growing.
　　Sentence 2 – say what you’ll write about in your essay:
　　This essay will discuss the main reasons of this epidemic and then describe the possible effects of the problem.
　　2.Body paragraph 1 – causes
　　Sentence 1 – state all the main causes of obesity:
　　In my opinion, the foremost causes of obesity are inactive lifestyle and unhealthy eating habits.
　　Sentences 2-3 – describe the first cause.
　　Assume that your examiner has no knowLEDge in this area and you have to explain all the details to him.Today more and more people rely on cars instead of walking, have less physical demands at work and prefer inactive leisure activities. This results in burning less calories and gaining weight.bestessaywriting serviceonwww.hotessay.cn
　　Sentences 4-5 – describe the second cause. Don’t forget that it’s useful to give examples while describing causes：
　　Moreover, the problem is accentuated by the growing number of people, who eat irregularly and consume large portions of high-calorie food. For example, about 50% of the adult population in Europe with so-called disordered eating suffer from obesity.
　　3.Body paragraph 2 – effects
　　Sentence 1 – state all the possible effects:
　　The possible effects of this problem include physical health problems and loss of productivity.
　　Sentences 2-3 – explain the first effect and give an example:
　　First of all, obesity results in incorrect functioning of the human body and contributes to the risk of developing some chronic illnesses. For example, as body fat percentage increases, the person’s metabolism worsens, which in turn may result in diabetes or heart diseases.
　　Sentences 4-6 – explain the second effect and support it with an example:
　　Secondly, overweight people are very unhealthy and often suffer from stress and tiredness. This lessens their work caPACity and results in lower productivity. For example, it has been proven that an obese person needs to put more effort to complete some task than a person with normal weight.
　　4.Conclusion
　　For the conclusion you need simply to restate the problem and sum up the causes and effects that you described in your body paragraphs:
　　To sum up, obesity is a big problem that affects a lot of people nowadays. It’s mainly caused by inactive lifestyle and eating disorders and results in severe health problems and loss of productivity.