三、內容明晰
句子不論長短，不論結構簡單還是複雜，內容都必須明晰。影響句子清晰度的因素主要有：
1、用詞不當
遣詞用字必須準確，否則很可能會造成歧義。例：
模糊：We Chinese workers all enjoy public medical care.
清楚：We Chinese workers all enjoy free medical care.
漢語中的公費醫療不能用public medical care來表示，因為public意為公有的`、公共的，這裡所說的公費醫療實質上就是免費醫療。
2、代詞指代不明
代詞必須有所指，而且要指代清楚。請看下面的例子：
模糊：When we got to the factory, they all went out to give us a warm welcome.
清楚：When we got to the factory, the workers all went out to give us a warm welcome.
在口語中，代詞you, they, it等常用來含糊地指代人和事，但在書面表達中，指代需要更確切一些。
模糊：Mrs Brown told Mrs White that her son was playing in her garden.
清楚：Mrs Brown told Mrs White, Your son was playing in my garden.
3、修飾語錯置
原則上，修飾性詞語應儘量貼近所修飾的詞，否則就可能會造成含義不清或句意改變的情況。例：
