备考雅思写作需要考生投入一定的时间与精力，对于每个知识点都要牢记。今天，前程百利小编为大家带来的是雅思写作知识点系列之流程图，希望对考生有所帮助。
流程图在考试中出现的频率远不如线形图、柱状图、饼图、表格等图形。但一旦出现，经常让很多考生头疼。其主要原因还是对流程图描写的练习不够。因此，考生不能抱侥幸心理，对不是很髙频的题型也要做充分的准备和练习。
流程图的描写要注意描写顺序，即先描写什么，后描写什么，以及用什么样的词和表达法将各个环节衔接起来。在流程图中，要注意表时间的连词的使用，要力求描写清晰明了，描写的主线很重要，千万不能东一下，西一下，否则虽然每个句子都是对的，但是可能却让考官摸不着头脑。
例题：
You should spend about 20 minutes on this task.
The diagram below shows the process of plastic recycling.
Summarise the information by selecting and reporting the main features.
Write at least 150 words.
读图：
该图显示了塑料瓶回收再利用的过程。首先是筛选，要经过筛选机，然后是光选，之后就是手工筛选。被选出来的瓶子会被粉碎成小片，并在热水中清洗，然后经过洗消，之后被融化并制成新的塑料瓶。
范文：
The above diagram illustrates the recycling procedures of plastic bottles from the selection j of used bottles to the making of new ones.
As can be seen from the diagram, the selecting of wasted plastic bottles is very complex. It goes through three steps: firstly, it is sieved so as to be separated from all the other rubbish or substances. Then, it is optically sorted, after which, the bottles will be manually checked in order to guarantee that no other substance is left in the plastic raw material.
After the careful selecting system, the chosen bottles will be grinded into pieces, and latter been washed in hot water. When the plastic slices are thoroughly washed, they would be decontaminated in special equipments. Only after being decontaminated can the plastic be reused to make new plastic goods again.
The final step is to melt the washed and decontaminated plastic pieces, and make new bottles, without leaving any hint of being recycled.
以上就是雅思写作知识点系列之流程图的详细内容，希望广大考生如愿考出自己理想的雅思成绩! 更多内容请持续关注前程百利雅思频道或者拨打服务热线400-890-6000。
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