英语口语图表作文是许多英语学习者在应试和提升口语能力过程中常遇到的一种题型。在这类作文中，学生需要根据所给的图表或数据，描述其间的关联和变化趋势。下面将介绍一些写作技巧，并提供一个范例，帮助你更好地应对这类题目。

首先，写作前要认真审题，理解图表的内容和要求。通常，图表作文会提供一个表格、柱状图或折线图，有时还会附有相关的数据和题目。学生需要仔细阅读题目，明确所要描述的主要内容和要求。

其次，在描述图表时，要注意使用适当的句子结构和词汇。可以使用比较级和最高级来描述变化趋势和相对数量。例如，当描述某个指标的增加或减少时，可以用动词“increase”（增加）和“decrease”（减少）；当比较不同指标时，可以用连词“higher than”（高于）和“lower than”（低于）等。

另外，尽量使用一些常用的表达方式，如“from...to...”（从...到...），“by...”（以...方式），以及表示数量和比例的词汇，如“percentage”（百分比）、“proportion”（比例）等。这样能使文章更准确、简洁，也更容易理解。

此外，要注意文章的连贯性和层次感。可以按照时间顺序或变化趋势来组织文章的段落，每段描述一个重要的变化或趋势，并使用适当的连接词，如“firstly”（首先）、“besides”（此外）和“finally”（最后）等，使文章更易读。

最后，多加练习是提高写作水平的关键。可以尝试更多的习题和范例，提高对图表的理解和描述能力。通过反复练习，可以提高自己的写作技巧，同时也更加熟悉表达自己观点的方式和词汇。

以下是一个范例，供大家参考：

题目：The Consumption of Energy Sources in the UK (2000-2010)

The bar chart below shows the consumption of energy sources in the UK from 2000 to 2010. Write a report for a university lecturer describing the changes that took place.

范例：

The bar chart illustrates the changes in the consumption of energy sources in the UK from 2000 to 2010. Overall, there were significant variations across the period, with a decrease in the use of coal and oil, and an increase in the consumption of natural gas and renewable energy.

In 2000, the consumption of coal stood at around 300 million tons of oil equivalent (MTOE), which was the highest among all the sources. However, this figure declined steadily and reached a low point of approximately 200 MTOE in 2010. Similarly, the use of oil experienced a downward trend, dropping from around 250 MTOE in 2000 to about 150 MTOE in 2010.

On the other hand, the consumption of natural gas showed an upward trend during the same period. In 2000, the consumption was around 200 MTOE, but it increased steadily and reached a peak of approximately 300 MTOE in 2010. Additionally, the consumption of renewable energy witnessed a remarkable rise. It was around 50 MTOE in 2000, but it more than doubled and reached approximately 120 MTOE in 2010.

In conclusion, the UK experienced significant changes in the consumption of energy sources from 2000 to 2010. The use of coal and oil decreased, while natural gas and renewable energy witnessed an increase. These changes reflect the country's efforts to shift towards cleaner and more sustainable energy sources during the period.