1)which 引导的定语从句结构
• which是关系代词,which后面应该加缺主语或者宾语的句子,在这个句子中,which要作成分,作主语或者宾语
2)in which+完整的句子,which在定语从句中作in的宾语,所以不能作后面句子的主语
3)名词+of which+谓语动词,of which来修饰名词,名词在定语从句中作主语,所以后面直接跟谓语动词
I have five books three of which are borrowed from Mary.
4)介词+ which +to do 其功能相当于定语从句。The key with which to open the door is lost.
5)定语从句的省略结构:
• 如果that / which在定从中作 宾语,可以省略.
sub.+ vt.+ n.+ (which / that) + sub.+ vt.→s.+ vt.+ n.+ s.+ v.
• 当做题时,若发现两个名词在一起,但是似乎连不上,则一定省略that/which,则动词为vt,做谓语。
6)定从的特殊省略
• the way (in which) + 句子
• the reason (why that)+句子
• the time (that / when)+句子
• By the time省that+句子,句子。