不是,有时可以替换,当关系代词在从句中做主语和宾语的时候,可以用that代替.
That's the place that we went before.
关系代词在从句中作宾语,where是做状语的,所以用that.
I don't know the reason why he left here.
关系副词在从句中做原因状语,不能用that.
不是,有时可以替换,当关系代词在从句中做主语和宾语的时候,可以用that代替.
That's the place that we went before.
关系代词在从句中作宾语,where是做状语的,所以用that.
I don't know the reason why he left here.
关系副词在从句中做原因状语,不能用that.