在复合句中作定语，修饰主句中的某一名词或代词的从句，叫做定语从句。被定语从句所修饰的词叫先行词，位于从句之前。定语从句有关系代词that、which、who、whose、whom和关系副词when 、where、why引导。
1.The man who talked to you just now is an engineer.
刚才和你说话的那个人是一位工程师。
2.This kind of book is for children whose native language is Chinese.
这种书是供母语是汉语的儿童看的。
3.I enjoyed the evening that we spent together by the sea.
我们一起在海边度过的那个晚上，我过得很愉快。
4.Here is the pen that you lost the day before yesterday.
这是你前天丢失的那支笔。
5.He is the person I met in the park yesterday.
他就是我昨天在公园里遇到的那个人。
6.The boo need is sold out.
你需要的那本书售完了。
7.The lady who came to our class is from Australia.
那位来过我们班的女士来自澳大利亚。
8.The man who shook hands with our teacher just now is Li Lei’s father.
刚才和我们老师握手的那个人是李雷的父亲。
9.I’ll never forget the summer holiday I spent with you.
我将不会忘记和你一起过的那个暑假。
10.She is one of the students in our class who are good at English.
她是我们班上英语很好的学生之一。
11.The man's car broke down. Everyone ran to help。
那人车坏了，大家都跑过去帮忙。
12.Pass me the green book，please。
请递给我那本绿皮的书。
13.Unprecedented prosperity has emerged in the countryside。
农村出现了前所未有的繁荣。
14.The bag you took is going to be scattered。
你拿的包快散了。
15.There are times when anyone has to give in。
任何人都有不得不屈服的时候。
16.Beijing is my birthplace。
北京是我的出生地。
17.Is that why he refused us to help him？
这就是他拒绝我们帮助他的理由吗？
18.His father died the year he was born。
他父亲在他出生那年逝世了。
19.He is unlikely to find the place where he lived 40 years ago。
他不大可能找到他四十 年前居住过的地方。
20.She is the girl who likes singing。
她就是那个喜欢唱歌的女孩。
