感恩您的提问

宾语从句中的关系代词 有 which ,whom, that .这里不称为连词或疑问词。

由于从句修饰的是宾语，而做宾语的情况比较多，无法用一个结构来概括。

如做双宾语的时候，I  bought some apples, which(做直接宾语) I gave the two boys（间接宾语）.  (gave the two boys some apples.)

做介词的宾语， This is the person from whom I got this news. from介词，whom是from的宾语 

做非谓语动词的宾语， This is the house which we consider buying. buying 非谓语动词。 (buying the house.)

做及物动词的宾语，He did not love his wife, whom he married only a month ago.  (married his wife .)

在限定从句中，关系代词可以省略，如He did not love his wife he married only a month ago.省略了whom

希望解答了您的疑惑。