注意: 固定动介词组不可分割,介词不能提前.例如:look after,look at …
关系代词与介词: 介词放在关系代词的前面时,介词宾语只能用which代物, 用whom代人。(介词在末尾时,关系词可以省略)
定语从句中需注意事项 有些情况下只用关系词that,而不宜用which 1.从句所修饰的词又被形容词最高级或序数词修饰时 This is the most interesting story( that )I have ever heard. The first meeting( that) we will take part in will be held in the afternoon. 2.先行词是 something, nothing, anything等不定代词时 Here is something( that) I will tell you.
2)The room (that) I live in is very big. The room (which) I live in is very big. The room in which I live is very big. The room where I live is very big.
which 指物,作主语或宾语 (作宾 语可省略,如介词提前则不能省)
These are the trees which were planted last year.
The TV set (which) he bought yesterday is made in Japan.
Is this the library (which) you borrow books from?
然后,要确定关系词在从句中的成分。请看下表