He has three sons .( )is a doctor.( )is a worker.( )is a teacher 怎样填

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 he has three sons,all of whom____(die)during the war== He has three sons .( )is a doctor.( )is a worker.( )is a teacher 怎样填 He has three sons ,and all of them are docHe has three sons ,and all of them are doctors.这个句子中为什么of后用的是them而不是they? 不定代词一定要放从句句首吗?He has three sons.All of them are doctor.两个句子合成一个.He has three sons,____________________.是All of whom are doctor还是 Whom all of are doctor?改错：China has many islands，of them Taiwan i He has three baseballs.(对three提问) He has three brothers.对 three提问 He has three children now the old man has three sons,two of ___areworking in the hospital是填WHO She has three sons,two of______died in battles横线上填什么先行词? 求详细讲解1、Mr.Brown has three sons.One is in England.________is in Australia. Mr Brown has three sons,two of them are doctors,______is a postman. 1 .He has two sons.Both of 应该填whom还是who are teachers .2.He has two sons,both of 应填whom还是who are teachers. He has two sons,who in the same company He has two sons who in the same company这俩个句子有什么区别 He has two sons,who in the same company He has two sons who in the same company这俩个句子有什么区别 once upon a time there lived an old man.He had three sons .One day ,he called them together and he has three watches 改为疑问句 He has three pencils改为一般疑问句