that和it代替前面的事时,有什么区别?在“His mother has told him many times,but( )did not help"括号中填哪个?

来源：学生作业帮助网 编辑：作业帮 时间：2024/04/24 18:08:49
that和it代替前面的事时,有什么区别?在“His mother has told him many times,but( )did not help
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that和it代替前面的事时,有什么区别?在“His mother has told him many times,but( )did not help"括号中填哪个?
that和it代替前面的事时,有什么区别?
在“His mother has told him many times,but( )did not help"括号中填哪个?

that和it代替前面的事时,有什么区别?在“His mother has told him many times,but( )did not help"括号中填哪个?
应该用it,可以做形式主语,指代一个句子.
that用来引导一个特定的词或短语,如果用that,则应该改为
,but that suggestion did not help.

it
that一般在定语从句里才指前面的事，或者特定语境中就非要专门指“那个”才用

it

that指前面已经提过，又提到。或是那个，那些。特指。it是代指