题目:The pie charts below show units of electricity production by fuel source in Australia and France in 1980 and 2000.
The information given by the pie charts is about how electricity is produced by different sources in two countries –Australia and France in two separate years (1980 and 2000).
In Australia, the units of electricity are produced by four different sources. In 1980, coal was the most popular source which produced 50 units of electricity. It is interesting to note that the units of electricity generated by hydro power equaled that by natural gas (20 units). In addition, only 10 units of electricity sourced from oil. Two decades later, the total production had risen to 170 units. Specifically, the data for coal increased sharply to 130 units, and that for hydro power witnessed a similar trend. In contrast, both natural gas and oil rapidly dropped to only 2 units respectively.
In terms of France, in the year of 1980, its electricity was generated by five sources. Natural gas and coal were the most important ones which produced 50 units altogether, representing more than 50% of the total 90 units. It was followed by oil and nuclear power which generated 20 units and 15 units respectively. Only 5 units was made by hydro power. After 20 years, total production soared to 180 units, among which nuclear power amazingly rocketed to 126 units, while coal remained constant. Natural gas and hydro power alike dropped to only 2 units.
In conclusion, over the two decades, the approaches of electricity generation had undergone great changes both in France and in Australia. It is noticeable that coal and hydro power were relatively important in the two countries.
本文的用词和句型变化多端，避免重复，灵活表达。例如，表示生产电力的短语有:be produced by, be generated by和be sourced from。
表示变化趋势的短语也很多，例如:rise to, increase sharply to, witness a similar trend, drop to, soar to ,rocket to等等。
It is interesting to note that the units of electricity generated by hydro power equaled that by natural gas (20 units).
句型it is interesting to note that值得借鉴。句中that指代the units of electricity generated, 很好的避免重复。Equal作为动词表相等。
Specifically, the data for coal increased sharply to 130 units, and that for hydro power witnessed a similar trend.
此句中witness a similar trend和后文undergo great changes都是非常合适的描述变化的短语。
After 20 years, total production soared to 180 units, among which nuclear power amazingly rocketed to 126 units, while coal remained constant.
本句中among which指的是在这180units中，while coal指代的是while the units generated by coal。这样的表达简洁明了，避免了不必要的重复。