同位语从句和定语从句是英语语法中的两种常见结构。同位语从句用于解释名词或代词，而定语从句用于描述或限制名词或代词。理解和掌握这些结构有助于更好地理解英语语言的结构和含义。
同位语从句
- My biggest fear, that I will fail the exam, keeps me up at night. （我最大的恐惧是我会考试不及格，这让我夜不能寐。）
- Her belief, that honesty is the best policy, has always guided her actions. （她的信仰是诚实是最好的政策，这一直指导着她的行动。）
- The fact, that he was late again, frustrated everyone in the office. （他再次迟到的事实让办公室里的每个人都很沮丧。）
定语从句
- The book, which I borrowed from the library, was very interesting. （我从图书馆借的书非常有趣。）
- The girl, whose father is a doctor, wants to become a nurse. （那个女孩的父亲是医生，她想成为一名护士。）
- The teacher, whom we met yesterday, is very knowledgeable. （我们昨天见到的老师非常有知识。）
