片语
present perfect continuous tense现在完成进行时
present progressive现在进行时
present perfect continuous tense 2现在完成进行时
present perfect continuous tense 1现在完成进行时
The Present Continuous Tense现在进行时
present perfect continuous tense 4现在完成进行时
be doing做;现在进行时;表达当时的行动(状态)
present perfect continuous tense 3现在完成进行时
present continuous past tense当前连续的过去时