It is best to travel with someone who can translate things for you.先行词是否是someone ,为什么用wh来引导定语从句,怎么不用that,that用法里不有先行词是someone用that当先行词是someone时,不只用that吗?我说的是先

It is best to travel with someone who can translate things for you.先行词是否是someone ,为什么用wh来引导定语从句,怎么不用that,that用法里不有先行词是someone用that当先行词是someone时,不只用that吗?我说的是先
It is best to travel with someone who can translate things for you.先行词是否是someone ,为什么用wh
来引导定语从句,怎么不用that,that用法里不有先行词是someone用that
当先行词是someone时,不只用that吗?
我说的是先行词someone是不定代词,这里不只能用that引导吗?为什么还用who

It is best to travel with someone who can translate things for you.先行词是否是someone ,为什么用wh来引导定语从句,怎么不用that,that用法里不有先行词是someone用that当先行词是someone时,不只用that吗?我说的是先
这个句子的先行词就是someone啊,who是关系代词.
这里的someone是指代的人,所以用who,如果是指代的物,就可以用that了

someone是指人，可用who引导，不只用that

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