英语学习是一个典型的输入与输出过程。首先要有足够的输入（阅读+听力），才能有良好的输出（口语+写作）。在认知过程中，输出往往比输入更具挑战性，因为说和写的能力往往需要更高的思维水平。虽然输入量增加自然会推动输出能力的提升，但现实中输出能力的增强只能带动部分输入的提升。那么，我们该如何进一步提高口语和写作能力呢？这就需要依靠一种策略性的方法。
提高英语水平的两个核心路径是：刻意练习和加大输入。在积累了一定的输入量后，我们需要开始刻意练习输出，包括口语和写作训练。通过这个过程，我们可以发现并纠正自己的错误，弥补知识漏洞，然后再次进行输入和输出，如此循环往复，我们的英语水平自然会逐渐提高。
一个完整的学习过程应该是这样的循环链：输入输出发现问题纠正错误+补充知识再次输入再次输出。
今天，我们来重点讲解一下如何在这个过程中发现问题和纠正错误。通过分析和纠正同学们的作文病句，我们可以学习如何正确表达英语句子。
例如：
第一篇：
原句：On one hand, we may not become rich through studying, but we can gain more knowledge.
第二篇：
原句：With the progress of society, it has become a widespread phenomenon that college students place great emphasis on their future studies.
第三篇：
原句：It is indeed the case that an increasing number of college students are taking up part-time jobs, which has generated widespread concern among them.
第四篇：
原句：Some people desire to live independently as soon as possible, while pursuing their own lives. Conversely, many individuals aspire to further their studies in order to enhance their educational qualifications and increase their job prospects.
第五篇：
原句：Research indicates that some individuals are able to find employment immediately after graduating, as they have located suitable jobs for themselves.