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现在完成进行时 collapse




翻译: 倒, 倒塌, 垮台, 失败, 崩溃, 瓦解, 病倒, 衰败, 倒坍, 坍塌, 溃, 溃陷

现在完成进行时




现在完成进行时 (Present perfect continuous)

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


不定式

collapse









规则动词 & 不规则动词