1、默记于心 耳熟能详第四单元生词短语一网打尽（黑体部分为本单元全部生词短语共55个）【温馨提示】与其硬背几十个英语生词，不如诵读含有这些词语的英语句子。因为孤立地记忆单词，那将是呆板的、枯燥的、无用的；而在句子中学习单词，则是灵活的、有趣的、实用的。毋庸置疑，语境中学习单词，词的意义和用法会跃然句上，学习效果会事半功倍。同学们不妨一试！Unit Four Global Warming1. How do greenhouse gases come about? Do you know their consequence? In fact, human activity has resulted i
2、n global warming rather than a random but natural phenomenon.温室气体是如何产生的呢？你知道其后果吗？事实上，人类活动导致了全球变暖，而不是随意的自然现象。2. Many people subscribe to the view that the burning of fossil fuels has increased the earths temperature, because huge quantities of carbon dioxide tend to be trapped in the atmosphere, caus
3、ing the global temperature to go up. But there is disagreement. Those who are opposed to this view believe that more CO2 is actually a positive thing.许多人认为化石燃料的燃烧增加了地球的温度，因为大量的二氧化碳会被困在大气中，造成全球气温上升。但有分歧，那些反对这种观点的人认为，二氧化碳多一些实际上是件好事。3. Nowadays, severe storms, floods, droughts, famines, as well as eart
4、hquakes, are regarded as catastrophes. Even if we have suffered many natural disasters in the past years, Chinas economic situation, on the whole, keeps up a steady development trend (tendency).现如今，不仅地震，而且严重的风暴、洪水、干旱和饥荒都被视为灾难。即使前几年我们遭遇到许多自然灾害，但总体而言，中国的经济形势继续保持稳定的发展趋势。4. On behalf of our company, we
5、have made a commitment. While production growth is maintained, we will never put up with pollution. So long as every individual makes an effort, the environmental pollution problem can be solved. We should advocate conservation-oriented (economical) society and make contributions to mankind.我们代表公司做出
6、承诺，在保持生产增长的同时，我们绝不容忍污染。只要人人努力，环境污染问题就能解决，我们应当倡导节约型社会并为人类做出贡献。5. The educator first gave a graph presentation, glanced at the data, and then stated that motor vehicles and electrical appliances like refrigerators, air conditioners, microwaves, and so on, consume lots of energy per day.教师先给了图表演示，看了一眼数
7、据，然后指出：汽车以及家电，如电冰箱、空调、微波炉等等，每天都消耗大量的能量。6. Under normal circumstances, temperature change is very mild, so people have become casual about it.在正常情况下，温度的变化是非常温和的，所以人们变得满不在乎。7. Since renewable resources are becoming less and less, nuclear energy begins to have a wide range of uses (widespread uses), though its average volume is not great. Thats all for new words and expressions in Unit Four. 由于可再生资源越来越少，所以核能源开始具有广泛的用途，尽管其平均用量不大。（这就是第四单元全部的生词和短语。）版权所有：高考资源网()
