关系代词是英语中一类常用的代词，用来连接两个句子或者从句。在英语语法中，关系代词包括 that, which, who, whom, whose。下面是20个关系代词的例句：
- The book that I borrowed from the library was very interesting.
- The car which parked in front of my house is blocking my driveway.
- The woman who lives next door to me has a beautiful garden.
- The man whom I met at the party is a famous actor.
- The dog whose bark is very loud belongs to my neighbor.
- The cake that my mom baked for my birthday was delicious.
- The movie which we watched last night was very scary.
- The teacher who teaches math is very strict.
- The student whom I tutored got an A on his exam.
- The dress whose color is blue looks good on you.
- The laptop that I bought last month is very fast.
- The song which is playing on the radio is my favorite.
- The doctor who treated me was very kind and patient.
- The friend whom I went to the concert with is a big fan of the band.
- The house whose roof is red is for sale.
- The book that I recommended to my friend was very inspiring.
- The restaurant which specializes in Italian food is always crowded.
- The manager who interviewed me for the job was impressed with my skills.
- The artist whose paintings are on display at the gallery is very talented.
- The phone that I lost last week was very expensive.
以上20个例句展示了关系代词在英语中的应用。当我们使用关系代词时，要确保代词和其所指的名词在性、数、人称等方面一致，以免出现语法错误。希望这些例句能够帮助你更好地理解关系代词的用法。
