片语
prepf present perfect tense现在完成式
present perfect tense 1现在完成时
The Present Perfect Tense现在完成时
Simple Present Perfect Tense现在完成时
Present Perfect Progressing Tense现在完成进行时
present perfect future tense现在完成将来时
present perfect tense 5现在完成时
present perfect continuous tense现在完成进行时
present perfect tense 3现在完成时