"This is the novel()is written by ."像这种前一句已经有宾语novel的时候用that 来指代已经提到的novel
如果是"This is ()is written by ." 前一句没有提到宾语,就用what来指代
"This is the novel()is written by ."像这种前一句已经有宾语novel的时候用that 来指代已经提到的novel
如果是"This is ()is written by ." 前一句没有提到宾语,就用what来指代