选if 如果是what,那么从句主语(即something)重复 如果是that,那么引导的就不会是表示疑问的从句 如果是which,同样造成从句主语重复 if表示是否,句子可以写成The boy's father asked the doctor,"Is there something could be done?"
The boy's father asked the doctor (B ) something could be done. A,what B,if C,that D,which 先从语法上看, ask sb. sth.问某人某事,可见从句整体就是sth. 再看从句sth. could be done是个完整的句子,有主...