这题怎么选 Water,which seems so simple and common,is what makes life possible.Water,which seems so simple and common,is ___ makes life possible.A what B which 为什么不选B which也可以做主语啊?
问题描述：
这题怎么选 Water,which seems so simple and common,is what makes life possible.
Water,which seems so simple and common,is ___ makes life possible.
A what B which
为什么不选B which也可以做主语啊?
答
应该选A。what 引导表语从句，翻译成‘...的东西’，在从句中作主语。which引导表语从句时翻译成‘哪一个’，表疑问。
答
which是有选择范围的 题目只给了个water 没有选择范围 所以不选这个 貌似是这样
答
中间的那部分which seems so simple and common是个插入语,可以省略,整个句子就是Water is _what___makes life possible.
what在此处作主语.
"is"后面是个表语从句,虽然which可以引导表语从句,但是不能充当从句的主语,通常充当定语和表语,表示“其中哪一个”
所以此处选择答案A what.