he has 2 sons,___work as chemists.为什么用BOTH OF THEM,不用BOTH OF WHOM?选项是two of whom ,both of whom,both of which,all of whom.从这里面选，选什么，为什么？以上的BOTH OF THEM用法对吗？

He has 2 sons .One is a teacher,the other is a workerHe has 2 sons .One is a teacher,the other son is a worker He has 2 sons .One son is a teacher,the other son is a worker这三句都对吗 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 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 英语翻译He has two sons,___is a doctor,____is a teacher 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 two sons,both of whom work as chemists.这里的as做什么成分? He has two sons.One son is a doctor .The other son is a teacher He has two sons, ( )of them lives with him. A .each B.neither C.either he has two sons and both are teachers这句话对吗? Mr.White has two sons ,and each of them has a sister.how many childen does he have? He has 2 sons .One is a teacher .The other is a worker 这里的one 和 the other是不是代词He has 2 sons .One son is a teacher .The other son is a worker 这里的one 和 the other是不是形容词 Alice has two sons.is Tim and is Tim.A.One,the other B.One,one C.He,he He has two sons,both of whom are teachers.和He has two sons both of them are teachers.第二句中没有and ,是不是对的?第一句的语法讲下, He has two sons,and ( ) are collage students.为什么能用both of them,and前后可以用两个主语么如果是he has two sons,___are college students.逗号前后只能有一个主语， He has two sons,both of whom are workers.此句中whom可以换成them吗?