第一段：描述图表内容
第一句：描述图表主题
The statistics about museums and their visitors are precisely illustrated by the line chart.
第二句：说明变化趋势
During the 3 years from 2013 to 2015,
描述第一个主体（博物馆数）变化趋势：
the figure of museums experienced a gradual rise, and soaring from 4.145 thousand to 4.692 thousand.
描述第二个主体（参观人数）变化趋势：
Besides, following the same tendency, the number of museum visitors, as is shown, ascended gradually from 6.378 billion to 7.811 billion, increasing by about 1.43 billion.
可以根据具体需要看是否加上第三句进行一个首段总结。
第二段：说明趋势变化原因
本题要求的是give your comments，所以建议大家不要一开始就直接进入原因的描述，你可以先说：可见我们国家对文化发展越来越重视了，那这个变化产生的具体原因是什么呢？然后开始原因的说明部分
总述，说明自己接下来要说什么（表达不当：改为立论或者别的总结性的词）（比如：要说原因）
It's of no difficult for us to think about that,nowadays,
we Chinese attach increasing importance to the development of culture. and The driving factors for this phenomenon may be summarized as follows.
接下来分述：（具体原因根据图表内容去写，总结各类型表达的通用句式）
To begin with, aside from disseminating knowledge in schools, department concerned adopts other ways to promote the comprehensive quality of Chinese citizens, for instance providing more access to museums is a simple yet effective way to broaden visitors' horizon.
In addition, having been experiencing the unparalleled material prosperity, most of Chinese citizens intend to pursue knowledge by visiting museums, tourist attractions and other places.
Moreover, museums, which are supported by public funding, provide visitors with knowledge and professional service.
最后一句可以小总结一下：
Individuals, therefore, are inclined to enjoy their leisure time by visiting museums.
结论段：表明自己的大致观点
细述：正面/反面评论一下话题
Considering which has been argued so far,we could safely come to the conclusion that the trend
of incresementof museum is undoubtedly exert indispensible effects on our society and Chinese citizens, and it is predictable that, in the next decade, both large cities and small towns will witness the popularization of museums.
