"He is very productive at home" 是表示他在家很能干的英文表达。
"Productive" 是形容词，意思是有生产力的、有成效的、有效率的。"At home" 是副词，表示在家的位置。
例句：
He is always very productive at home. (他在家始终很有效率。)
She has been able to be more productive at home since the pandemic started. (自从疫情爆发，她能在家里更有生产力了。)
Despite the distractions, he is still able to be productive at home. (尽管有很多干扰，他仍然能在家里有效率工作。)