This document discusses the present perfect simple and present perfect progressive tenses in Thai. [1] Both tenses are very similar, with the present perfect simple using "have/has + past participle" and the present perfect progressive using "have/has been + present participle". [2] The present perfect simple tends to emphasize completion or results, while the present perfect progressive emphasizes ongoing action without completion. [3] Examples are provided to demonstrate the proper uses of each tense.