it和that代替从句的区别,在括号中

题目

it和that代替从句的区别,在括号中
1.---In fact,youneedn't get a visa through a travel agent.
---Can Ididn't know （that） before.
2.---She'salready fifty.
---You must be joking.She doesn't look （it）.

答案

首先that 和 it都是特指,而在具体语句中两者起的作用不相同.第一个方面：（单指某一词）则that与所指名词为同类,但不是同一个,而it 与所指名词为同一个.eg1:The hat you bought is bigger than that I bought.(同类...