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现在完成进行时 grave **






现在完成进行时

I have been graving


**这个动词(各种形式的)已经过时或只在某些方言和特殊情况下使用

现在完成进行时 (Present perfect continuous)

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


不定式

grave **









不规则动词