句子的統(tǒng)一指的是一個句子只表示一個完整的中心思想，它不包含與此中心思想無關的部分。而且，句子的各部分之間的關系必須是清楚而又符合邏輯的。
例如：Different people have different addiction to (preferences for) books. They read different books just to meet their different needs. BECause different people have different needs to read the different kinds of books. From this we can also see that different people have different intentions and notions. So they choose the different things to meet their needs in every facet in life.
這段話語言混亂，雜亂無章，句子之間沒有明確的銜接，我們可以這樣修改：
Different people have different preferences for books. Different people read the different kinds of books, BECause different people have different intentions and notions just as they choose the different things to meet their needs in every facet in life.
例如：Different people have different addiction to (preferences for) books. They read different books just to meet their different needs. BECause different people have different needs to read the different kinds of books. From this we can also see that different people have different intentions and notions. So they choose the different things to meet their needs in every facet in life.
這段話語言混亂，雜亂無章，句子之間沒有明確的銜接，我們可以這樣修改：
Different people have different preferences for books. Different people read the different kinds of books, BECause different people have different intentions and notions just as they choose the different things to meet their needs in every facet in life.