She had three sons,all of whom became doctors.这里面的连词为什么用whom,从句中缺少主语,不是wo og从句中缺少主语,不是应该用who么,如果是whom的话,它在句子中作什么cheng dem

She had three sons,all ___ became doctors.A.who B.whose C.of which D.of whom求思路. （1）She had three sons,all____became doctors.A of which B which C who D of whom (2) The pencil__（1）She had three sons,all____became doctors.A of which B which C who D of whom(2) The pencil___I wrote is gone.A that B by which C with it D with w once upon a time there lived an old man.He had three sons .One day ,he called them together and once there was a king who had three sons .是什么句式?所关系到什么语法?详解一下.谢谢! She had three sons,all___became doctors.a.of whichb.whichc.of whomd.who请问这题是考什么知识点的?要选择哪一项?请说明原因,谢谢!那主语是she谓语是had宾语是？all___became doctors在句中是充当宾语吗？ The man had ( ) and he loved all of them.A.a horse B.a house C.no money D.three sons选填A、B、C、D 英语翻译There was once a man who had three sons.He had no fortune but the house.Each of the three sons wanted it after his death;but the father loved each one the same,and did not know how to treat them all fairly.At last,he said to his sons,”G A king had three sons whom he loved equally well,and he did not know which of them to appoint as 的中文意思 121.he doesn’t like __his mother treats him.A the way which B the way of which C the way in that D the way122.she had three sons,all__became doctors.A of which B which C of whom D who为何选DC she had a toothache three days age怎么对three days age提问（ ）（ ）she ( )a toothache The old man had three sons,all of____died during war为什么不能填them she thought she?to nanjing at least three times.a:was b:had been c:would be ;d:had been She has three sons,two of______died in battles横线上填什么先行词? 英语翻译The story happened during the Second World War.An old man lived in a small town of Germany.He had three sons and they all worked in the same factory where he had worked.After the war had begun,his sons were all made to join the army one a She had three favorite films的意思 （）three years,she had a baby.A.In B.After C.On she had come to teach the three brothers a lesson in cooperation翻译 定于从句问题① He has three sons, none of __A___ is a doctor. ② He has three sons, but none of ___B_ is a doctor. ③ He