你说的是先行词在从句中做宾语的定语从句,如 this is the book that i want .先行词book做从句的宾语.其实定语从句的先行词可做很多成份.再如 this is all that can be done .
this is the city where I grew up .
I will never forget the days when we worked together.
The reason why he didn't go to school is that he was ill.