2.图表写作

The graphs below show the size of the ozone hole over Antarctica and the production of three ozone damaging gases from 1980 to 2000.

Ozone Hole Size over Antarctica

Three Damaging Gases to Ozone Layer

The line graph曲线图，the bar char柱状图，the pie chart饼状图，the table表格

首段：改写

The line graph indicates the change in the ozone hole size over Antarctica region and the amount of three gases produced which caused damage to the ozone layer during the same period when the years from 1980 to 2000 was mentioned.

主句.....+时间状语+when+从句.....

分词{现在分词：主动；过去分词：被动}做后置定

the production of A=the A produced

定语从句：that/which引导

第二段：Ozone Hole Size over Antarctica的动态变化

As can be seen from the first graph， the ozone hole was at its size of approximately 400 thousand square kms in 1980，but 20 years later，it was enlarged by 9 times to 3.6 million square kms.

【...be at its/their number/amount/size of+数据】

.....，but+从句....【转折】；it was enlarged by+倍数+to+数据

The only period when there was a reduction in size was in the early 1990s（from 2 to 1.2 million square kms）

【The only period when+从句...was in +时间（用括号补充数据）】

第三段：Three Damaging Gases to Ozone Layer动态变化

According to the second graph，about 70 million tonnes of CFC-11 was produced，which remained stable for 2 years before undergoing a steady decline to below 10 million tonnes in the late 1990s.

【....，which +谓语....】remain stable保持平稳；before doing sth【做某事之前】

undergo a steady decline【平稳下降】；experience a gradual increase逐步上升

The production of CFC-12，on the other hand，showed an upward trend throughout the 20-year period from 25 to 50 million tonnes，surpassing the production of CFC-11 in 1989.

【主语，+状语，+谓语+宾语....】show an upward trend显示上升的趋势

throughout the 20-year period from ...to....

句子........，doing sth.【.....，这做某事。】A surpassed B

..................，surpassing B.

.......，which do sth.=......，doing sth.

N₂O，however，was not produced until 1990，but its production soared rapidly to roughly 40 million tonnes in 2000.

结尾段：总结概括（写出最明显最突出的地方）

Overall，the two graphs indicate that it was mainly CFC-12 and N₂O which gave a rise to the expansion of ozone hole Antarctica in the last two decades of the 20^th century.

【Overall，the two graphs indicate that it was mainly A which +谓语+宾语....】

give a rise to the expansion of.......