雅思英语小作文三线图原创范文（number of visitors）
The chart illustrates the number of tourists travelling to a particular island in Caribbean from 2010 to 2017. It also compares the number of visitors staying on cruise ships and that on island, which are the two groups constituting the total number of tourists.
To start with, there was a clear upward trend throughout the 7 years. In 2010, only a quarter of a million visitors stayed on cruise ships and 0.75 million visitors stayed on island, adding up to 1 million, whereas in 2017, those figures rose to 2 million and 1.5 million respectively, which total up to 3.5 million.
During the year from 2010 to 2011, unlike the number of visitors staying on island which remained constant, the number of visitors staying on ships doubled and total number increased to 1.25 million. Following that, the amount of visitors staying on island experienced a dramatic increase and grew from 0.75 to 1.25 million by 2012. During the same period, the figure of visitors staying on cruise ships falls by 50% (0.25 million).
The next year, which is 2013, the numbers of both groups moved up by 0.25 million and aggregated to 2 million in total. After that, the number of visitors staying on island remained unchanged for 3 consecutive years in a row, then dropped to 1.25 million in 2016, and rose back to the previous level in the final year. On the contrary, the figure of the other group increased consistently, which totaled 1, 1.25, 1.5 and 2 in the following 4 years.
Overall, the graph shows more visitors went to the island during the given period. Additionally, more visitors stayed on island until mid-2015, where number of visitors staying on cruise ships surpassed the number of the other party for the first time.
文章结构：
开头重写标题：这张图介绍了总数，也比较了构成总数的两个组（在船上和在岛上）
Body分三段：
第一段描述整体情况，说整体是上升趋势，分别说明了2010和2017的总数据和分组数据。
第二段介绍2011-2013三年。
第三段介绍2013-2017，主要因为2013-2015有一个3 consecutive years in a row, 可以用来做对比。
结尾段总结，去岛上的人越来越多，在mid-2015之前在岛上的人一直更多，之后被在船上的人超越。
时间线的图，使用较多conjunction和collocation：
To start with...
During the year from.. to..
Following that....
During the same period...
The next year...
After that...
On the contrary...
Whereas...
Additionally...
Unlike...
Overall...
常用的短语/单词使用：
Increase consistently
Move up
rise
Fall by
Constitute
Clear upward trend
Illustrate
compare
Respectively
Remain constant
Total up to
add up to
reach
surpass
