来源：学历教育在线 2017-03-09 责任编辑:李老师评论
雅思大作文中有一类题目是因果关系类，具体包括三小类：cause and effect、cause and solution、problem and solution。这三小类问题也可以穿起来，即针对某个topic的cause—effect(即problem)–solution。
üBecause further education has become more accessible for a wider range of people,an increasing number of people have degrees.
üFurther education has become more accessible for a wider range of people,so an increasing number of people have degrees.
1.because of:because后接的是一个句子(主谓宾);because of后一般直接跟名词。例如：
üBecause of the increasing number of machine—and as we noted before,machines magnify human effort—then anyone using a machine can get a higher wage than anyone not using a machine.
üHours spent on commuting,traffic jams,and fights for parking should diminish,since workers make fewer journeys ｏｒ work staggered hours.
üUnfortunately,as the number of people living in the city increases,so do the different problems associated with population growth.(注意此句中的so不表示“所以”，而是“…也…”的意思)
3.thanks to(positive situations通常适用于结果好的时候)
üThanks to new technology,it's easier than ever to work remotely.
due to(negative situations通常使用与结果不好的时候)
owing to/attributable to/on account of.
üDue to/…/On account of extreme weather conditions,damage to property occurs.
4.当原因需要的表达较多时，我们还可以把以上表达改写为原因状语从句，使用thanks to the fact that/due to the fact that/owing to the fact that或者on the grounds that,,,
üWill we live longer merely due to the fact that/on the grounds that technology,if implemented properly,will take stress away from our lives
5.caused by/result from也表原因
üMany car accidents were resulted from/caused by a lack of guardrails
thus：表示‘in this/that way’
As a country develops,its cities become the engines of development,thus jobs are available in these areas.
therefore：表示‘for this reason’/‘because of this ｏｒ that’
üTherefore,the influence of the peer group is important both for one’s own competence and for the relative evaluation of the process itself,given that one sees oneself in relation to others.
thereby:by that means,as a result of that
üIn some countries,reduced budgets have led to the elimination of busing systems,thereby increasing the use of cars and the congestion they ｃｒｅａｔｅ.
üDrinking lots of water is healthy and reducing plastic waste is great for the environment.Hence,trendy reusable water bottles that you can refill yourself are health-promoting,eco-friendly,and green.
2.As a result/As a consequence
üAs a result,those people who were indoors had much lighter skin,which means that whiter skin is now associated with having a higher status than dark skin.
üAs a consequence,environmental health must address the societal and environmental factors that increase the likelihood of exposure and disease.
üWater pollution affects drinking water,rivers,lakes and oceans all over the world.This consequently harms human health and the natural environment.
üSome of the laws were contradictory.Accordingly,measures were taken to clarify them.
üThe amount of garbage produced by the people also increases which causes sanitary landfills to fill up faster.
2.lead to/result in导致
注意这里是result in,后跟结果，前面提到的result from后面跟的是原因。
üThe society’s attitude to food often leads to over-consumption.
3.bring about:to cause to take place引起，带来(注意使用时更倾向于“带来“这个意思)
üThe internet technologies that have brought about so much social change were scarcely imaginable just decades before they appeared.
üSpark off a series of problems/a chain of events related to…
üThey can spark off each other's talents
üMore likely than not,getting a vehicle from point"A"to point"B"involves combustion of a fossil fuel,a process that emits gasses and affects the environment and the ozone layer.
üPeople's behavior is influenced by circumstances and events,friends and family,education,job prospects,income,housing and environment.
üOver the last few decades,there has been a tremendous growth in information technology,which can impact on our everyday life.
3.give rise to使发生
üThe decrease inthe number of bicycles and cars might give rise to anothernew set of problems.
üObesity can be divided into three main causes–diet,lifestyle and education.
üThousands of people migrate to the cities not only for jobs but also for educational and personal reasons.
üThis is a difficult problem with many serious effects on the individual and country.
üAnother result is lack of self-esteem.
3.causality因果关系(cause and effect)causation原因
üThe correlation between population and housing price does not indicated causality,only the association.这里的causality也可以换成：causal effect(因果效应)
üSuch a causality-driven,prevention-focused approach to homicide and other serious crime would revolutionize our conception of criminal justice,moving from the imposition of“just deserts”to the enlightened pursuit of a less violent society.
üThis area is often overlooked but has a tremendous impact on your life
üFriends have a big influence on the way that we use social media—from unwritten rules to buying decisions and so much more.
üLow income and elderly are among the potential causal factors of prevalence of obesity among adults.
üMeasures other than ratings will prove more consequential.
Family is the most influential factor on happiness.