【正确答案】[范文]
   The information given by the line chart is about the percentage of people aged 65 and over from 1940 to 2040 in three different nations (namely, Japan, Sweden and USA).
   As we can see from the three-line chart, in i940, USA had the largest proportion of elderly people aged 65 and more, taking up almost 10%. It increased to 15% during the next four decades, which was closely followed by a leveling off at 14%. However, it is estimated to see a dramatic increase to just under 25% in 2040. Similarly, the proportion of old people in Sweden was always lower than that of USA. But, it exceeded the percentage of old people in USA in 1995 and it is expected to hit 25% 40 years later, although there will be some fluctuations.
   On the contrary, the proportion of people aged 65 and more in Japan saw a decrease from 5% in 1940 to about 3% in 1960 and it kept stable for over 20 years. Interesting, it is expected to grow dramatically and exceed that of Sweden and USA, shooting just over 25% in 2040, becoming the country which will house the most percentage of elderly people.
   All in all, it is clear to see that there was and will be a clear difference in the proportion of elderly people aged 65 and more in the three countries.

【答案解析】 1.语言表达
   本文的时态变化最需要注意，先用过去时，再用将来时态以及表示预期未来的短语。
   ● The information given by the line chart is about the percentage of people aged 65 and over from 1940 to 2040 in three different nations (namely, Japan, Sweden and USA).
   雅思小作文首段统一对原题进行paraphrase。本句用percentage替换proportion；用from 1940 t0 2040替换between 1940 and 2040；用nations替换countries。
   ● It increased to 15% during the next four decades, which was closely followed by a leveling off at 14%.
   此句用which引导的定语从句连接两个句子，避免主语的重复，连贯、紧凑地描述发展趋势。
   ● Interesting, it is expected to grow dramatically and exceed that of Sweden and USA, shooting just over 25% in 2040, becoming the country which will house the most percentage of elderly people.
   本句连用两个分词短语，接连描述了三层重要含义。
   2.逻辑结构
   本文是典型的总分总结构的小作文。开篇先paraphrase原题，第二、三部分描述线图的细节，最后总结全文。