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选什么,说原因After the earthquake,some doctors were sent to the ar

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选什么,说原因
After the earthquake,some doctors were sent to the area ( )needed medical workers A who B which C where
选什么,说原因After the earthquake,some doctors were sent to the ar
B
定语从句缺主语,指地点用关系代词which
地震以后,一些医生被派往那个需要医疗人员的地区
( which主语 )needed medical workers 是定语从句,修饰the area
再问: where 不是指地点吗?怎么不选C?
再答: where 指地点没错, 但是它在从句中是作地点状语的。 而这个定语从句中缺的是主语。 where 作为关系副词是不能做主语的。 which主语 )needed(谓语) medical workers (宾语)