this that有时和THE的用法一样,为什么不是定冠词

this that有时和THE的用法一样,为什么不是定冠词 this 和that用法的区别 this,that的用法 THE 和THIS用法 this和that的用法,有什么不同和相同? 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 问this that these those there 的用法和区别~ that is why和 this is why用法的区别 Just then的用法和at that moment的用法一样吗? 求英语THE和THIS的区别和用法 in spite of the fact that和regardless of the fact that?用法,他俩一样吧举例说明（带翻译） 请问this beverage was discovered over three thousand yearsdefore that中that的含义和用法 连词it、that 、this 、its 的用法 this that these those的用法 same的用法the same as 和 the same that 的用法有什么区别. 请问the one和that的不同用法 this和the的用法this和the的意思一样..到底是怎样区分..用在哪里...例如：A policeman saw this man 还是A policeman saw the man..还有：A policeman followed this man ..还是A policeman followed the manthe 和this 是不是都