如：He loved his parents deeply, both of whom are very kind to him.
In the basket there are quite many apples, some of which have gone bad.
There are forty students in our class in all, most of whom are from big cities.
词的位置非常灵活，有时放在关系代词之前，有时放在动词之后。如： when=in/on/at…+which, where=in/on/at…+which, why=for+which
如：I won’t forget the date when( on which) I was born. This is the room where (in which) I lived. = This is the room which I lived in. I don’t know the reason why (for which) he hasn’t come today.
方面）同 in 搭配 例句：The field in which I studied in
university is psychology. 4) basis ground foundation （基础）同
on 搭配
The man
The plane in which we flew to Canada is very comfortable. (√)
The plane in that we flew in to Canada is very comfortable. (F)
3).“介词+关系代词”前可有 some, any, none, both, all, neither, most, each, few 等代词或者数词
This is the
2). 若介词放在关系代词前，关系代词指人时用 whom， 不可用 who 或者 that；指物时用 which，不能用 that；关系 代词是所有格时用 whose
如：The man with whom you talked is my friend. (√) who/that you talked with is my friend. (F)
“介词+关系词”的用法 1、关系代词在从句中作介词的宾语时，介词常可以提前，但介
词提前时，关系代词只能用 which 或 whom。 如：The school (that/which) he once studied in is very famous. →The school in which he once studied is very famous. Tomorrow I will bring here a magazine (that/which) you asked for. →Tomorrow I will bring here a magazine for which you asked. We'll go to hear the famous singer (whom/that/who) we have often
Tom still remembers the days when (in which) they lived in Tianjin.
注意：ቤተ መጻሕፍቲ ባይዱ
1). 含有介词的动词短语一般不拆开使用，如：look for, look
after, take care of 等
如：This is the watch which/that I am looking for. (√) watch for which I am looking. (F)
4). 把握“介词＋关系代词”结构中介词的选用
介词的选择与主句中先行词的搭配密切相关。
如：That”s the reason for which he was late for school. book on which I spent 8 Yuan.
This is the
介词选择的三大规则： 1. 取决于从句中的谓语动词同介词的搭配。（V+ pre.） 如：He is the man whom I talked with this morning. 2. 取决于先行词同介词的常规搭配。 四组常考的搭配：1）extent degree （程度）同 to 搭配 2）price(具体多少钱时与 at; 若指价格方面 与 in 搭配) speed rate 同 at 搭配 3）field area aspect sphere （领域，
talked about. →We'll go to hear the famous singer about whom we have often
talked. 2、关系副词 when, where, why 和介词+which 之间的关系。 关系副词 when, where, why 可以用适当的介词+which 来替代。介