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现在完成进行时 sing




翻译: 唱, 唱歌, 演唱, 啼, 鸡叫

现在完成进行时

I have been singing


您是网页 不规则动词 sing

现在完成进行时 (Present perfect continuous)

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


不定式

sing







不规则动词