在前面一讲中,我们讲了“统一性”原则,即 unity。那么如何使每段段落在内容上保持统一呢?这就要求每段段落必须有一句说明段落主题的句子,即 topic sentence,而其它所有的句子都以此为中心展开。在前面一讲中,我们列举了三段以“On cheating in exams”为题的文字,第三段只有三句句子,第一句 Cheating in college is commonplace. In the previous lecture, we talked about the principle of “unity”, unity. So how do we make each paragraph consistent in terms of content? This requires that each passage must have a sentence that states the subject of the passage, namely topic sentence, and all other sentences are centered on this. In the previous lecture, we listed three paragraphs with the text “On cheating in exams”. The third paragraph had only three sentences. The first sentence was Cheating in college is commonplace.