it ,this ,that,these,those 用于指代前面句子的成分的区别?

it ,this ,that,these,those 用于指代前面句子的成分的区别? these,this,that,those,it,they等的用法和区别 用适当的代词this,that,it,these,those填空. 指示代词“this,these,that,those”的用法与区别 this that these those的区别!（要具体） 问this that these those there 的用法和区别~ THIS,THAT和IT的指代用法有什么区别 THIS、THAT和IT的指代用法有什么区别? it one this that 指代上文内容时的区别 this that these those的用法 those,that,these,this的用法 this that these those 的分别