passive perfect present participle现在分词完成式的被动
present perfect passive voice现在完成被动
A Present perfect passive现在完成时的被动语态
PERFECT PASSIVE PARTICIPLE分词;完成时被动态分词
perfect passive infinitive完成时不定式被动态
Present perfect passive现在分词被动
the present perfect passive voice现在完成时的被动语态