2018年8月18日雅思大作文机经预测：话题12

　　题型12 话题分类：饼状图 属性：一级重点

　　参考题目1

　　The two graphs show the main sources of energy in the USA in the 1980s and the 1990s. Write a report for a university lecturer des...

　　The two graphs show the main sources of energy in the USA in the 1980s and the 1990s. Write a report for a university lecturer describing the changes which occurred.

　　图片

　　解题思路

　　【首段】总述美国1980和1990时，石油煤炭天然气水电力以及核能的变化情况 【二段】分述石油煤炭天然气的具体变化情况 【尾段】分述水电力和核能的变化情况

　　范文

　　The two graphs show that oil was the major energy source in the USA in both 1980 and 1990 and that coal, natural gas and hydroelectric power remained in much the same proportions. On the other hand, there was a dramatic rise in nuclear power, which doubled its percentage over the ten years. Oil supplied the largest percentage of energy, although the percentage decreased from 42% in 1980 to 33% in 1990. Coal in 1990 was the second largest source of energy, increasing its proportion to 27% from 22% in the previous decade. Natural gas, the second largest source in 1980 at 26%, decreased its share very slightly to provide 25% of America’s energy ten years later. There was no change in the percentage supplied by hydroelectric power which remained at 5% of the total energy used. Nuclear power the greatest change: in 1990 it was 10%, twice that of the 1980s.