副词在句子中既可修饰动词又可修饰句子,这样会导致歧义。例如:My brother Abraham presented his talk naturally.此句中的副词naturally既可修饰动词presented,表示Abraham自然流利地发表了演讲,即My brother Abrahampresented his talk in a natural way,也可修饰整个句子,表示Abraham当然发表了演讲,即of course,my brother Abraham presented his talk.英语中的副词或副词短语always,also,only,sometimes,as well as等,在修饰谓语动词和它们前后其他一些词语时,也很容易出现歧义现象。