比方说Do you know the man whom I met和This is a man whom I talked about .第一句whom是做整个定语从句的宾语,而第二句的whom是做介词about的宾语,注意是介词,那么”关于定语从句中关系代词作宾语可省略“

Do you know the way? do you know the mean do you know the time lunchDo you know the time_____lunch? Do you know the to the question? Do you know that I'm Do you know I'm not? Do you know the girl i__red? Do you know the girl ___ red what do you know about the Do you know the girl over Do you know the girl for yellow? Do you know the pizza girl? Do you know () the rain come from? Do you know the girl（ ） glasses The game came over do you know Do you know the boy ()(name) David Do you know what c___ the fire Do you know the question n___ three?