名词和代词一致
2.1 代词与其代替或修饰的名词在人称和性别上必须保持一致。
例如：(错误) Those of us who are over fifty years old should get their blood pressure checked regularly.
(正确) Those of us who are over fifty years old should get our blood pressure checked regularly.
我们中五十岁以上的人应该定期地检查血压。
3.同等成分一致
3.1句子中的同等成分应该在结构上保持一致，否则会失去平衡和协调。
例如：(错误)She is not only famous in China but also abroad.
(正确)She is famous not only in China but also abroad.
她不仅在中国，在国际上也很有名气。
3.2在比较结构中，被比较的事物应是同等成分。
例如：(错误)The workers in that factory are fewer than our factory.
(正确)The workers in that factory are fewer than those in our factory.
那个工厂的工人比我们厂的工人少。