介词宾语就是在介词后的名词,数词,代词等,如,My sister looks after the boy every afternoon. the boy 就是look after 这个短语的宾语,因为look 是 介词所以,the boy 是它的宾语。
介词的宾语从句就是一个句子做介词的宾语,如,I didn't listen to what my mother said because my brother was making a noise.这里what my mother said 是 个句子 作listen to 的宾语,这里to 是介词,所以 what my mother said 是listen to宾语从句。