定语从句是英语语法中比较重要的一个部分，也是英语考试中常考的内容之一。下面列举了50个定语从句的例句，并附上了翻译和分析，帮助大家更好地理解和掌握定语从句的用法。
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The girl who is wearing a red dress is my sister. 穿红色裙子的女孩是我的妹妹。 定语从句修饰girl，who为关系代词。
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The book that I read yesterday is very interesting. 我昨天读的那本书非常有趣。 定语从句修饰book，that为关系代词。
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The man whose car was stolen reported it to the police. 他的车被盗了，他报警了。 定语从句修饰man，whose为关系代词。
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The school where I study is very big. 我就读的学校非常大。 定语从句修饰school，where为关系副词。
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The teacher whom I respect is Mr. Smith. 我尊敬的老师是史密斯先生。 定语从句修饰teacher，whom为关系代词。
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The reason why he left the company is still unknown. 他离开公司的原因仍然未知。 定语从句修饰reason，why为关系副词。
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The film that we watched last night was very exciting. 我们昨晚看的电影非常精彩。 定语从句修饰film，that为关系代词。
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I have a friend whose father is a doctor. 我有个朋友，他的父亲是医生。 定语从句修饰friend，whose为关系代词。
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The person whom I met at the party is my old friend. 我在派对上遇见的人是我的老朋友。 定语从句修饰person，whom为关系代词。
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The place where we had dinner last night was very expensive. 我们昨晚吃饭的地方很贵。 定语从句修饰place，where为关系副词。
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The book which was written by Mark Twain is very famous. 马克·吐温写的那本书非常有名。 定语从句修饰book，which为关系代词。
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The girl whose hair is curly is my cousin. 头发卷曲的女孩是我的表妹。 定语从句修饰girl，whose为关系代词。
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The reason why he failed the exam is that he didn't study hard. 他考试不及格的原因是他没有好好学习。 定语从句修饰reason，why为关系副词。
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The place that we visited last week was very beautiful. 我们上周参观的地方非常美丽。 定语从句修饰place，that为关系代词。
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The man whom we met yesterday is a famous actor. 我们昨天遇见的那个人是一位著名的演员。 定语从句修饰man，whom为关系代词。
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The person whose car is parked over there is my neighbor. 停在那儿的车主是我的邻居。 定语从句修饰person，whose为关系代词。
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The reason why I came late is that I missed the bus. 我迟到的原因是我错过了公交车。 定语从句修饰reason，why为关系副词。
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The school that my sister goes to is very famous. 我妹妹所在的学校非常有名。 定语从句修饰school，that为关系代词。
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The teacher whom I asked for help is very kind. 我寻求帮助的老师非常友善。 定语从句修饰teacher，whom为关系代词。
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The place where we are going to visit tomorrow is very interesting. 我们明天要参观的地方非常有趣。 定语从句修饰place，where为关系副词。
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The book which I borrowed from the library is very boring. 我从图书馆借来的那本书非常无聊。 定语从句修饰book，which为关系代词。
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The girl whose father is a businessman is very smart. 父亲是商人的那个女孩非常聪明。 定语从句修饰girl，whose为关系代词。
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The reason why she didn't come to the party is that she was sick. 她没有来参加派对的原因是她生病了。 定语从句修饰reason，why为关系副词。
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The film that I watched last night was very scary. 我昨晚看的那部电影非常恐怖。 定语从句修饰film，that为关系代词。
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The man whom I saw in the park is a police officer. 我在公园里看到的那个人是一名警察。 定语从句修饰man，whom为关系代词。
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The person whose bag was stolen reported it to the police. 袋子被偷的那个人报了警。 定语从句修饰person，whose为关系代词。
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The reason why he is always late is that he doesn't have a car. 他总是迟到的原因是他没有车。 定语从句修饰reason，why为关系副词。
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The school where my brother studies is very strict. 我弟弟上学的那所学校非常严格。 定语从句修饰school，where为关系副词。
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The teacher whom I like most is Miss Lee. 我最喜欢的老师是李老师。 定语从句修饰teacher，whom为关系代词。
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The place where we had lunch yesterday is very crowded. 我们昨天吃午饭的地方非常拥挤。 定语从句修饰place，where为关系副词。
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The book which I bought last week is very informative. 我上周买的那本书非常有启发性。 定语从句修饰book，which为关系代词。
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The girl whose mother is a doctor is also studying medicine. 母亲是医生的那个女孩也在学习医学。 定语从句修饰girl，whose为关系代词。
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The reason why he is so successful is that he works hard. 他成功的原因是他工作非常努力。 定语从句修饰reason，why为关系副词。
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The film that we watched last week was very romantic. 我们上周看的那部电影非常浪漫。 定语从句修饰film，that为关系代词。
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The man whom I met on the train is a famous writer. 我在火车上遇见的那个人是一位著名的作家。 定语从句修饰man，whom为关系代词。
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The person whose phone was stolen reported it to the police. 手机被偷的那个人报了警。 定语从句修饰person，whose为关系代词。
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The reason why she is always tired is that she works too hard. 她总是很累的原因是她工作太努力了。 定语从句修饰reason，why为关系副词。
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The school that my cousin goes to is very good. 我表妹所在的学校非常好。 定语从句修饰school，that为关系代词。
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The teacher whom I learned a lot from is Mr. Johnson. 我从中学到很多的老师是约翰逊先生。 定语从句修饰teacher，whom为关系代词。
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The place where we are going to have dinner tonight is very famous. 我们今晚要去吃饭的地方非常有名。 定语从句修饰place，where为关系副词。
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The book which I recommend to you is very interesting. 我向你推荐的那本书非常有趣。 定语从句修饰book，which为关系代词。
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The girl whose brother is a musician is also very talented. 哥哥是音乐家的那个女孩也很有才华。 定语从句修饰girl，whose为关系代词。
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The reason why he is unhappy is that he failed the exam. 他不开心的原因是他考试失败了。 定语从句修饰reason，why为关系副词。
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The film that we watched yesterday was very funny. 我们昨天看的那部电影非常有趣。 定语从句修饰film，that为关系代词。
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The man whom I talked to at the party is my boss. 我在派对上跟那个人交谈的是我的老板。 定语从句修饰man，whom为关系代词。
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The person whose bag was found in the park is very lucky. 在公园里找到袋子的那个人非常幸运。 定语从句修饰person，whose为关系代词。
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The reason why she is so nervous is that she has an interview today. 她非常紧张的原因是她今天有面试。 定语从句修饰reason，why为关系副词。
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The school where my friend teaches is very famous. 我朋友所在的学校非常有名。 定语从句修饰school，where为关系副词。
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The teacher whom I admire the most is Mrs. Brown. 我最敬佩的老师是布朗夫人。 定语从句修饰teacher，whom为关系代词。
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The place where we spent our vacation last year is very beautiful. 我们去年度假的地方非常美丽。 定语从句修饰place，where为关系副词。
