Line graphs always show changes over time.

1. Try to write 4 paragraphs - introduction, summary of main points, 2 detail paragraphs.

尽量写四段—1 intro，1 主要点的总结，2 细节段

2. For your summary paragraph, look at the "big picture" - what changes happened to all of the lines from the beginning to the end of the period shown (i.e. from the first year to the last). Is there a trend that all of the lines follow (e.g. an overall increase)?

总结段主要描写整个折线图的蓝图—从开始到结束的变化？ 折线图的大趋势…

3. You don't need to give numbers in your summary paragraph. Numbers are specific details. Just mention general things like 'overall change', 'highest' and 'lowest', without giving specific figures.

不要在总结段中写数字，因为那是细节段中应该出现的。在总结段中描述的应该是总体的变化值，最高或者最低的统计量。

4. Never describe each line separately. The examiner wants to see comparisons.

条形图最忌讳的是每根图分开描写，阅卷的人希望看到的是每条折线间的对比。

5. If the graph shows years, you won't have time to mention all of them. The key years to describe are the first year and the last year. You should also mention any 'special' years (e.g. a peak or a significant rise/fall).

如果图中有年份的描述，我们应该仅仅只写一些关键的年份，比如，第一年和最后一年，或者峰值所对应的那一年或者涨幅/跌幅最大的那一年。

6. Start describing details (paragraph 3) with a comparison of the lines for the first year shown on the graph (e.g. In 1990, the number of...).

细节段主要描述每条折线间的对比

7. Use the past simple (increased, fell) for past years, and 'will' or 'is expected/predicted to' for future years.

关于时态：过去的时间用过去时，将来的时间用将来时或者 is expected/predicted to

8. Don't use the passive (e.g. the number was increased), continuous (e.g. the number was increasing), or perfect tenses (e.g. the number has increased).

不要用被动，进行以及绝对时态

Example

The graph shows energy consumption in the US from 1980 to 2018, and projected consumption to 2030.

Petrol and oil are the dominant fuel sources throughout this period, with 35 quadrillion (35q) units used in 1980, rising to 42q in 2012. Despite some initial fluctuation, from 1995 there was a steady increase. This is expected to continue, reaching 47q in 2030.

With复合结构在Task 1考官范文中出现频率极高，是非常好的描写某个项目的数据的表达，表示伴随。公式是：With+名词（代词）/名词短语+现在分词/过去分词/副词。在with结构中逻辑主语与非谓语动词有主谓关系，且与句子主语不一致。

Petrol and oil are the dominant fuel sources throughout this period, with 35 quadrillion (35q) units used in 1980.

逻辑主语35q units (petrol and oil)与逻辑谓语是被动关系。

Consumption of energy derived from natural gas and coal is similar over the period. From 20q and 15q respectively in 1980, gas showed an initial fall and coal a gradual increase, with the two fuels equal between 1985 and 1990. Consumption has fluctuated since 1990 but both now provide 24q. Coal is predicted to increase steadily to 31q in 2030, whereas after 2014, gas will remain stable at 25q.

In 1980, energy from nuclear, hydro- and solar/wind power was equal at only 4q. Nuclear has risen by 3q, and solar/wind by 2. After slight increases, hydropower has fallen back to the 1980 figure. It is expected to maintain this level until 2030, while the others should rise slightly after 2025.

Overall, the US will continue to reply on fossil fuels, with sustainable and nuclear energy sources remaining relatively insignificant.

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