一、关系代词（that, which, who, whom, whose）
1. The book thatI borrowed from the library is very interesting.（我借的图书馆那本书很有趣。）
2. The movie whichwe watched last night was thrilling.（我们昨晚看的那部电影很惊险。）
3. The person whowon the award is my friend.（获奖的那个人是我的朋友。）
4. The company whomwe interviewed last week is leading the industry.（我们上周面试的那家公司是行业领头羊。）
5. The house whosegarden is beautiful is next door.（花园很漂亮的那所房子就在隔壁。）
二、关系副词（when, where, why）
1. The song whenit was performed is still popular.（演奏时的那首歌至今仍受欢迎。）
2. The city whereI grew up has changed a lot.（我长大的城市变化很大。）
3. The reason whythe meeting was postponed is unknown.（会议推迟的原因尚不清楚。）
4. The day on whichwe met was unforgettable.（我们见面的那天难以忘怀。）
5. The project whosefunding was secured was a success.（获得资金支持的那个项目取得了成功。）
三、特殊用法
唯一性：
He is the only one of the students thatpassed the exam.（他是唯一通过考试的学生。）
非限制性定语从句：
Tom, who lives next door, is my neighbor.（住在隔壁的Tom是我的邻居。）
介词+关系代词：
The letter in whichI found the photo was from my friend.（我找到照片的信封里来自我的朋友。）
倒装句：
That the meeting was canceled surprised everyone.（会议取消的消息让每个人都感到惊讶。）
建议结合具体语境选择引导词，并注意从句中成分的完整性。练习时可用不同先行词替换，加深理解。