present perfect continuous和present perfect simple的区别与用法

present perfect continuous和present perfect simple的区别与用法 present perfect simple and present perfect continuous Present simple,present continuous,present perfect simple,pre present simple和present continuous 的用法 请问present simple,the present continuous,the present perfect这 英语问题,求解释present perfect 和 present perfect continuous. present continuous tense 跟present perfect continuous tense的混 past continuous/present continuous/present perfect continuou 什么是PRESENT PERFECT CONTINUOUS啊? 英语present perfect simple跟past perfect simple 有什么区别? Present simple和Present continuous分别是什么意思? present perfect