IELTS Academic Writing Task 1 的折线图，不是逐点报数，而是概括主要变化并比较不同曲线。写出每个数字看似完整，却可能埋没重点。下面提供题目、典型初稿、四项标准反馈和改进后的答案。LetsWords 也按这样的方式检查提交内容：先指出影响最大的地方，再用新图表练对应能力。
题目：折线图
The graph below shows the percentage of adults in one country who used three different book formats between 2014 and 2024.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Write at least 150 words.
动笔前看什么
先回答三个问题，它们共同构成 overview，即整体概况。没有概况，答案容易变成数字清单。
- 起点和终点，谁最高？ 纸质书，2014年为62%，2024年为45%。虽然下降，但始终最常用。
- 哪些曲线改变方向或速度？ 电子书在2020年前增长较快，之后停在30%，再略有下降。有声书先增长缓慢，随后越来越快。
- 哪里出现交叉？ 到2024年，有声书31%，已超过电子书28%。
细节部分只需选择起止数据、电子书的峰值，以及能够展示有声书从缓慢到加速的两个数字。Task 1 官方说明要求呈现最重要的信息，允许省略次要细节。LetsWords 折线图指南采用同样思路：先概括趋势，再按变化方式分组，只选择支撑概况的数字。
第一稿：数字齐全，缺少整体图景
The graph shows information about how many people used books in one country from 2014 till 2024. There are three types of books.
In 2014, 62% of people used printed books. In 2016 it was 59% and in 2018 it was 56%. In 2020 the percent of printed books decrease to 51% and in 2022 it was 48%. In 2024 it decrease to 45%. So the percent of printed books decrease during the whole period.
E-books were 12% in 2014. Then they increase on 7% and were 19% in 2016. In 2018 they increased to 26% and in 2020 they increased to 30%. In 2022 it was 30% again and in 2024 it was 28%.
Audiobooks were 4% in 2014 and 5% in 2016. In 2018 they were 8%, in 2020 they were 14% and in 2022 they were 22%. In 2024 the percent of audiobooks increased on 31%.
In conclusion, printed books decrease and e-books and audiobooks increase.
答案超过150词，列出的数字也都来自图表。但十年间究竟发生了什么，仍要读者自行总结。
LetsWords 反馈示例：先补概况，再改措辞
反馈覆盖四项标准，但修改的重要程度不同。这里最应先处理 Task Achievement：缺少概况和比较，即使句子没有语法错误，也没有充分完成任务。
Task Achievement：没有概况，也没有比较。 只有末句尝试总结：In conclusion, printed books decrease and e-books and audiobooks increase. 它遗漏了电子书的重要变化：2020年后停止增长，甚至下降；也没有说明纸质书始终最高，以及两种数字形式发生交叉。各形式之间缺少比较。引言也不够准确：图表显示比例，不是人数。
修改后的 overview 放在引言后，不使用具体数字：
Overall, printed books remained the most popular format throughout the period, although their use declined steadily. Both digital formats became more common, but while e-book use levelled off after 2020, audiobook use grew at an accelerating rate and had overtaken it by 2024.
Coherence and Cohesion：按年份流水账，没有分组。 每种形式各占一段，反复出现 in 2016 it was…、in 2018 it was…，段落间没有联系。可以按趋势组织，并用连接方式说明数据关系：
Audiobook use grew slowly at first, reaching only 8% in 2018, but then accelerated. By contrast, e-book use levelled off at around 30% from 2020.
Lexical Resource：说清测量的是什么。 E-books were 12% in 2014 把电子书本身说成12%，但比例指的是使用它的成年人。The percent of printed books 应改为 the percentage of adults who used printed books，或更简短的 printed book use。需要的名词是 percentage，统计对象是成年人，而不是书籍。反复出现的 it was 可以根据变化改为 fell to、levelled off、overtook。
In 2014, 12% of adults used e-books.
Grammatical Range and Accuracy：句式重复，时态与数字介词有误。
- decrease to 51% → decreased to 51%：时间段已结束，需要一般过去时。
- increase on 7% → increased by seven percentage points：变化幅度用 by，两个百分比的差用百分点。
- increased on 31% → increased to 31%：达到的数值用 to。
- from 2014 till 2024 → between 2014 and 2024：这里 till 语气偏口语。
- 几乎所有句子都是 In 2016 it was 59%、In 2018 they were 8% 的结构。也需要适当变化，例如改进答案中的 …, reaching 45% in 2024, which was still well above…。
免费的 go up练习解释 on 的错误，以及 by 和 to 的选择；rise 与 raise则区分两个动词。
LetsWords 对提交答案的反馈同样对应具体措辞，并在末尾给出下一步：先重写哪里、练哪一项标准。
改进后的完整答案
The line graph compares the percentage of adults in one country who used printed books, e-books and audiobooks between 2014 and 2024.
Overall, printed books remained the most popular format throughout the period, although their use declined steadily. Both digital formats became more common, but while e-book use levelled off after 2020, audiobook use grew at an accelerating rate and had overtaken it by 2024.
In 2014, 62% of adults used printed books, compared with 12% for e-books and 4% for audiobooks. Over the following decade, the figure for printed books fell gradually, reaching 45% in 2024, which was still well above the figures for both digital formats.
E-book use, by contrast, rose sharply between 2014 and 2020, more than doubling to 30%. It remained at that level in 2022 before dipping slightly to 28% in 2024. Audiobooks followed a different pattern: their use grew slowly at first, reaching only 8% in 2018, but then accelerated, climbing to 22% in 2022 and 31% in 2024, which put audiobooks ahead of e-books. By 2024, the gap between printed books and the most popular digital format had narrowed from 50 to 14 percentage points.
改进版保留了18个数据中的9个，每个都支撑概况，各细节段也都包含形式之间的比较。
描述趋势的语言
变化： rise sharply、fall gradually、level off、dip slightly、overtake、a dramatic increase；其中 dramatic表示变化突然且幅度大。
数字： rise by seven percentage points 表示变化幅度，rise to 31% 表示达到的数值，peak at 30% 表示峰值。描述整体中各部分的占比，例如饼图，可以用 account for。但它不适合直接套在这张图上：62%是使用纸质书的成年人比例，不是三种形式共同组成一个总量后的某一份额。
比较： whereas、while、in contrast、unlike。Overview 通常用 overall引出，而不是 in conclusion。更多内容见连接词分类。
这些免费练习都提供典型错误和答案检查。要让表达进入考试答案，还需要主动回忆。在 LetsWords 词汇训练器中，可以加入词集，根据词义提示回忆，造句并查看反馈，再通过间隔复习巩固。
同样的方法怎样用于柱状图、饼图和表格
问题仍然相同：什么最重要、应该比较什么、哪些数字能支撑判断。变化的是“主要特征”的具体形式。
- **柱状图：**最高与最低值、最明显的差距、类别顺序。
- **饼图：**最大与最小份额；若有多张图，还要比较主要变化。
- **表格：**最高与最低值，以及相似的行或列，不逐格报数。
LetsWords 的每类题型都有对应结构和检查清单。题库包含折线图、柱状图、饼图、表格、组合图、地图和流程图。
下一步：为一张新图写 overview
要检验是否掌握，必须换数据。在 LetsWords 中选择另一张折线图，先练 Task Achievement。无需完整答案，只写 overview 和两三句，涵盖总体方向、最明显的变化或对比，以及起止数据比较。反馈只关注这一项标准。
如果细节仍按年份排列，可以练 Coherence and Cohesion：概况之后，按趋势分组。如果问题主要在时态和介词，就练 Grammatical Range and Accuracy，使用 from… to…、while、by the end of the period。
然后写完整答案。提交前检查清单，例如是否比较不同曲线，而不是分别逐年描述。四项反馈会显示先改什么，也可以提交此前已经写好的答案。更多 Task 1 形式及练法见 IELTS Writing Task 1。
从范例走向新的图表任务：写 overview 或完整答案，查看反馈，再练薄弱标准。开始 LetsWords IELTS Writing 练习时，回答有关目标和水平的问题，付费前即可体验反馈。