定語從句連接詞

　　定語從句的連接詞不可以用what.

　　一.定語從句及相關術語

　　1.定語從句：修飾一個名詞或代詞的從句稱為定語從句，一般緊跟在它所修飾的先行詞后面。

　　2.關系詞：引導定語從句的關聯詞成為關系詞

　　關系詞有關系代詞和關系副詞。關系代詞有that, which, who, whom, whose, as等; 關系副詞有where, when, why等。

　　關系詞常有3個作用：1，引導定語從句。2，代替先行詞。3，在定語從句中擔當一個成分。

　　二.關系代詞引導的定語從句

　　1.who指人，在從句中做主語

　　(1) The boys who are playing football are from Class One.

　　(2) Yesterday I helped an old man who lost his way.

　　2. whom指人，在定語從句中充當賓語，常可省略。

　　(1) Mr. Liu is the person (whom) you talked about on the bus.

　　(2) Mr. Ling is just the boy whom I want to see.

　　注意：關系代詞whom在口語和非正式語體中常用who代替，可省略。

　　(3) The man who/whom you met just now is my friend.

　　3. which指物，在定語從句中做主語或者賓語，做賓語時可省略

　　(1) Football is a game which is liked by most boys.

　　(2) This is the pen (which) he bought yesterday.

　　4. that指人時，相當于who或者whom;指物時，相當于which。在賓語從句中做主語或者賓語，做賓語時可省略。

　　(5) The number of the people that/who come to visit the city each year rises one million.

　　(6) Where is the man that/whom I saw this morning?

　　5. whose通常指人，也可指物，在定語從句中做定語

　　(1) He has a friend whose father is a doctor.

　　(2) I once lived in a house whose roof has fallen in.

　　whose指物時，常用以下結構來代替

　　(3) The classroom whose door is broken will soon be repaired.

　　(4) The classroom the door of which is broken will soon be repaired.

　　(5) Do you like the book whose cover is yellow?

　　(6) Do you like the book the color of which is yellow?

　　三.介詞+關系代詞引導的定語從句

　　關系代詞在定語從句中做介詞賓語時，從句常由介詞+關系代詞引導

　　(1) The school (that/which) he once studied in is very famous.

　　(2) The school in which he once studied is very famous.

　　(3) Tomorrow I will bring here a magazine (that/which) you asked for.

　　(4) Tomorrow I will bring here a magazine for which you asked.

　　(5) We”ll go to hear the famous singer (whom/that/who) we have often talked about.

　　(6) We”ll go to hear the famous singer about whom we have often talked.

　　注意：1.含有介詞的動詞短語一般不拆開使用，如：look for, look after, take care of等

　　(1) This is the watch which/that I am looking for. (T)

　　(2) This is the watch for which I am looking. (F)

　　2.若介詞放在關系代詞前，關系代詞指人時用whom，不可用who或者that;指物時用which，不能用that;關系代詞是所有格時用whose

　　(1) The man with whom you talked is my friend. (T)

　　(2) The man with who/that you talked is my friend. (F)

　　(3) The plane in which we flew to Canada is very comfortable. (T)

　　(4) The plane in that we flew in to Canada is very comfortable. (F)

　　3.“介詞+關系代詞”前可有some, any, none, both, all, neither, most, each, few等代詞或者數詞

　　(1) He loved his parents deeply, both of whom are very kind to him.

　　(2) In the basket there are quite many apples, some of which have gone bad.

　　(3) There are forty students in our class in all, most of whom are from big cities.

　　四.關系副詞引導的定語從句

　　1. when指時間，在定語從句中做時間狀語

　　(1) I still remember the day when I first came to the school.

　　(2) The time when we got together finally came.

　　2. where指地點，在定語從句中做地點狀語

　　(1) Shanghai is the city where I was born.

　　(2) The house where I lived ten years ago has been pulled down.

　　3. why指原因，在定語從句中做原因狀語

　　(1) Please tell me the reason why you missed the plane.

　　(2) I don”t know the reason why he looks unhappy today.

　　注意：關系副詞引導的從句可以由“介詞+關系代詞”引導的從句替換

　　(1) The reason why/ for which he refused the invitation is not clear,

　　(2) From the year when/in which he was going to school he began to know what he wanted when he grew up.

　　(3) Great changes have taken place in the city in which/where I was born.

　　五.限制性定語從句和非限制性定語從句

　　限制性定語從句舉例：

　　(1) The teacher told me that Tom was the only person that I could depend on.

　　(2) China is a country which has a long history.

　　非限制性定語從句舉例：

　　(1) His mother, who loves him very much, is strict with him.

　　(2) China, which was founded in 1949, is becoming more and more powerful. 要注意區分以下幾個句子的不同

　　(1) His brother who is now a doctor always encourages him to go to college. 他那當醫生的哥哥常鼓勵他要考上大學。(他還有其他的哥哥)

　　(2) His brother, who is now a doctor, always encourages him to go to college. 他的哥哥是當醫生的，常鼓勵他要考上大學。(他只有一個哥哥)