托福写作想要取得高分，无非在平时多积累一些托福词汇，句子以及常用的写作素材。那么托福写作素材要积累多少才能够抵挡托福考试变化多端的出题方向呢?是不是越多越好?其实，不是的。因为，当我们的积累超过一定的数量时，我们就会忽略一些细节或者是容易混淆。前程百利小编在这里告诉你，托福写作素材只需要积累七个就行。就像是集齐七颗龙珠就能召唤神龙一样。大家集齐这七个托福写作素材，就能取得托福写作高分了。接下来，前程百利小编继续和大家分享托福写作七大万能素材。今天和大家分享的是托福写作常用素材中环保话题。
其实环保类话题的写作，又可以细分成环境的保护、居民健康、经济发展等三个小话题。这三个话题是在托福写作中出现频率最高的话题，如果能够熟练掌握这三个话题，就能把我托福写作中的一类题目了。接下来，小编将针对这三个小话题，给大家提供一些写作素材，方便大家在今后托福写作中用到时，可以拿来使用。
素材一：Environmental Protection环境保护
随着环境问题日益恶化，越来越多的人们关注环境保护的问题。尤其是北京雾霾的频发，使得越来越多的人开始加入到保护环境的行列中。所以，环保这个话题，也在托福写作中屡见不鲜。
According to the U.S. Environmental Protection Agency, more than half of the air pollution in the nation comes from vehicles, primarily automobiles. In addition to air pollution, cars have the potential to pollute the environment through the toxic fluids leaking out of them. People will likely reduce car use in the next twenty years with their increasing awareness of gas emissions contributing to environmental degradation.
素材二： Health Concerns健康问题
健康和环境是分不开的，好的环境是健康的保证。越来越多的人关注健康，开始通过各种方式改善自己的健康状况。此外，环境问题的日益恶劣，使得健康问题重新被人们认识。
Walking and riding bicycle are ideal ways of doing exercise and good for our health. By walking or cycling, people are able to stretch their arms and legs and refresh their mind after a day's work, and they can also see things they may never see in their car. In addition, they do not emit a single molecule of greenhouse gas, which is good for our environment.
素材三： Economic Concerns经济发展
经济发展是国家发展的核心竞争力，但是，经济发展又常常和环境问题联系起来。托福写作中也常常出现关于发展经济，还是改善环境的题目。所以，这个话题，对于国家政府机构来说，更加具有选择性，也更值得深思。
For instance, many people now choose to live in a place close to their work, not only because the traffic is convenient, but also because they can save a lot of money from paying for their gas and car maintenance. The money saved can be spent on things that people believe are essential to improving their quality of life.
环保类是托福考试中又一个经常考的话题，所以考生在备考中一定不能忽视。小编将话题进行细分，是为了帮助大家能够更好的备考此类话题，充分备考。
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