现在完成进行时:The present perfect continuous是这样写的嘛?
现在完成进行时:The present perfect continuous是这样写的嘛?
present continuous tense 跟present perfect continuous tense的混
The future Perfect Continuous Tense 用法 .过去完成进行时 the past per
请问present simple,the present continuous,the present perfect这
现在进行时是present progressive tense 还是 present continuous tense
past continuous/present continuous/present perfect continuou
present perfect progressive 现在完成进行 和present perfect 有什么区别
present perfect simple and present perfect continuous
The present perfect of be is contrasted with the continuous
什么是PRESENT PERFECT CONTINUOUS啊?
present perfect continuous和present perfect simple的区别与用法
英语问题,求解释present perfect 和 present perfect continuous.