It is tom ,who plays footbal well ,that helped the drowing person.为什么要用that如果是强调句的话 也是可以用who的啊？
问题描述：
It is tom ,who plays footbal well ,that helped the drowing person.为什么要用that
如果是强调句的话 也是可以用who的啊？
答
是It is ．．．that 从句啊
答
It is tom that helped the drowing person。 是tom救了那个溺水的人！
It is ……that 强调句型，此处强调主语Tom
who plays footbal well 为插入语 题中句子可划为两个句子
It is tom that helped the drowing person
Tom plays football well.
答
It is ……that 是强调句型,本句强调的是主语