What are you doing now? (informal)
Tuṁ hamaṇāṁ śuṁ karē chē?
What are you doing now? (formal)
Tamē hamaṇāṁ śuṁ karō chō?
I am charging my phone now
Huṁ hamaṇāṁ phōna cārja karuṁ chuṁ
I am recharging my batteries right now
Huṁ hamaṇāṁ mārī bēṭarī ricārja karuṁ chuṁ