介词+关系代词其实就 等于关系副词 when/where/why还有whose
when=on/at inwhich
where=to/on/against等 which
why=for which
whose=of whom
高中基本就这么多
选which的方法是根据从句中的动词来选.如
the book is the one for which I look 是根据动词搭配look for 来选的,还有就是根据先行词来选的,如the days on which people work by hand have gone 这是根据先行词的搭配 on the days 选的,考题就是上面2种选词方法,你要牢记
我尽量讲的很详细了,希望你好好玩味玩味,不懂了就再问.
有way/time /place这3个后的介词,一般可以省,但不省也不算错,你记住只要是从句不缺成分,就必须加介词,这样才等于when/where/why