This is the present that he gave me for my birthday2. 作宾语：She is the person that I met at the school gate yesterday.
The book that my grandmother gave me is called “The Great Escape”. I’ll never forget the day when I first came to Beijing.
1. who 指人，在定语从句中作主语。例如：
The person who broke the window must pay for it.
The boy who is wearing the black jacket is very clever.3. whose 指人，在定语从句中作定语。例如：The girl whose mother is ill is staying at home today.
I know the boy whose father is a professor.
A dictionary is a book which gives the meaning of words.
Here is the book (which) the teacher mentioned yesterday.
I’ve read the newspaper that(which) carries the important news.
Who is the person that is reading the newspaper over there?
6. when 指时间，在定语从句中作状语。例如：I’ll never forget the time when we worked>He arrived in Beijing>
7. where 指地点，在定语从句中作状语。例如：
This is the house where we lived last year.
The factory where his father works is in the east of the city.
四. 关系代词 whom， which 在定语从句中作介词宾语时，可以和介词一起放于先行词与定语从句之间，有时为了关系紧凑也可以将 whom 与 which 与先行词紧挨着书写，而将介词置于定语从句的后面，如：
That was the room in which we had lived for ten years. = That was the room
which we had lived in for ten years.
1. 只能使用that,不用which 的情况：
(1) 先行词是all, few, little, nothing, everything, anything 等不定代词时。例如：
All that he said is true.
(2) 先行词被only, no, any, all,等词修饰时。例如：
He is the>
He was the second (person) that told me the secret.
This is the best book (that) I have read this year.
He talked about the people and the things he remembered.
2. 只能用which，不用that 的情况：
The meeting was put off, which was exactly what we wanted.
The thing about which he is talking is of great importance.考查的主要形式是单项填空、完型填空、短文填空和完成句子。阅读理解和书面表达肯定也要用到定语从句。