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：Apolicemansawthisman还是Apolicemansawtheman..还有：Apolicemanfollowedthisman..还是Apolicemanfollowedthemanthe和this是不是都

　　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：Apolicemansawthisman还是Apolicemansawtheman..还有：Apolicemanfollowedthisman..还是Apolicemanfollowedtheman

　　the和this是不是都可以用...this比the是不是更加明确句子中是说谁啊?还是都一样?知道的请回答我...