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现在完成进行时 demonstrate




翻译: 演示, 示范, 表明, 表示, 论证, 证实, 证明, 示威, 说明

现在完成进行时




现在完成进行时 (Present perfect continuous)

I
have been demonstrating 
you
have been demonstrating 
he/she/it
has been demonstrating 
we
have been demonstrating 
you
have been demonstrating 
they
have been demonstrating 


不定式

demonstrate









规则动词 & 不规则动词