1 He is the man who often helps me with my studies.
2 The book which I bought last week was lost.
3 The girl whom I was talking to just now is my sisiter.
4 I will never forget the days when we stayed together last summer.
5 <Titanic> is the most wonderful movie that I have ever seen. 6 People who take physical exercise live longer.
7 He is the man whose car was stolen.
8 I have a sister who is a doctor.
9 This is the villiage where I was born twenty years ago.
10 The reason why I was late was that I was caught in a traffic jam.
限制性定语从句对被修饰的先行词有限定制约作用，使该词的含义更具体，更明确。限制性定语从句不能被省略，否则句意就不完整。
1、She has found the necklace（that）she lost two weeks ago.
她找到她那条丢失两周的项链。
2、Do you remember the girl who taught us English？
你还记得教我们英语的那个女孩吗？
3、Clock is a kind of instrument which can tell people time.
钟是一种能够告诉人们时间的仪器。
4、This is the place where he used to live.
这就是他过去居住的地方。
5、This is the book he lost yesterday.
这就是他昨天丢的那本书。
本回答被网友采纳1、He is the man who often helps me with my studies.
他就是那个经常在学习上帮助我的人。
2、The book which I bought last week was lost.
我上星期买的那本书不见了
3、The girl whom I was talking to just now is my sisiter.
刚刚跟我谈话的那个女孩是我姐姐。
4、I will never forget the days when we stayed together last summer.
我永远不会忘记上个夏天我们一起的日子。
5、is the most wonderful movie that I have ever seen.
《铁达尼号》是我看过的电影之中最棒的。
6、People who take physical exercise live longer.
进行体育锻炼的．人活得长些。
7、He is the man whose car was stolen.
他就是汽车被窃的那个人。
8、I have a sister who is a doctor.
我有一个医生的姐姐。
9、This is the villiage where I was born twenty years ago.
这就是我二十年前出生的村庄。
10、The reason why I was late was that I was caught in a traffic jam.
我迟到的原因是我遭遇到塞车了。
本回答被网友采纳他就是那个经常在学习上帮助我的人。
2 The book which I bought last week was lost.
我上星期买的那本书不见了
3 The girl whom I was talking to just now is my sisiter.
刚刚跟我谈话的那个女孩是我姐姐。
4 I will never forget the days when we stayed together last summer.
我永远不会忘记上个夏天我们一起的日子。
5 <Titanic> is the most wonderful movie that I have ever seen.
《铁达尼号》是我看过的电影之中最棒的。
6 People who take physical exercise live longer.
进行体育锻炼的人活得长些。
7 He is the man whose car was stolen.
他就是汽车被窃的那个人。
8 I have a sister who is a doctor.
我有一个医生的姐姐。
9 This is the villiage where I was born twenty years ago.
这就是我二十年前出生的村庄。
10 The reason why I was late was that I was caught in a traffic jam.
我迟到的原因是我遭遇到塞车了。本回答被提问者和网友采纳