Is It Necessary to Attend Training Classes?
　　According to the graph, great changes have taken place in the number of training classes in the past ten years. On the one hand, from 2004 to 2007, the increase of the training classes was not so great. On the other hand, there has been a sharp increase in the training classes after 2010.
　　There are three reasons for the change. Firstly, with the development of the society, more people pay much attention to the improvement of their ability, and they hope to improve through training classes. Secondly, to most people, training plays a direct part in helping them to attain their goal quickly and efficiently. Thirdly, with the improvement of the people's living standards, more and more people regard it as a preferable way to spend their spare time.
　　As for me, it is necessary to attend training classes. For one thing, they can play a very important role in helping you to attain your goal quickly and efficiently. For another, you can learn not only what you need quickly but also a new way to broaden your horizon.            (180 words)

according to... 根据......
take place  发生
on the one/other hand
一方面/另一方面
firstly; secondly; thirdly
首先；其次；再次
improvement  n. 提高
attain their goal 达到他们的目的
regard...as...  把......当作......
as for me  对于我来说
not only...but also... 不仅......而且......
broaden your horizon 开阔你的视野

　　

是否有必要参加培训班？
　　由图表可知，培训班的数量在过去十年中有了翻天覆地的变化：其一，从2004年到2007年培训班数量的增长并不显著；其二，2010年后培训班数量急剧增加。
　　这种变化是由三大原因引起的。首先，随着社会的发展，越来越多的人注重自身能力的培养，他们希望通过培训班来提高水平。其次，对于大部分人而言，培训班能快速、有效地帮助他们达到目标。第三，随着人们生活水平的提高，越来越多的人将参加培训班视为打发业余时间的最佳途径。
　　对我而言，参加培训班是十分必要的。一方面，它们在你快速有效地实现目标的过程中起着至关重要的作用。另一方面，你不仅能迅速掌握所需技能，而且也能学到一种开拓眼界的新方式。

1. Firstly, with the development of the society, more people pay much attention to the improvement of their ability, and they hope to improve through training classes. 首先，随着社会的发展，越来越多的人注重自身能力的培养，他们希望通过培训班来提高水平。
2. Secondly, to most people, training plays a direct part in helping them to attain their goal quickly and efficiently. 其次，对于大部分人而言，培训班能快速、有效地帮助他们达到目标。
3. Thirdly, with the improvement of the people's living standards, more and more people regard it as a preferable way to spend their spare time. 第三，随着人们生活水平的提高，越来越多的人将参加培训班视为打发业余时间的最佳途径。