Subject + 怎么办
怎么办 (zěnme bàn) means "what should we do" or "what if," used to express concern or ask for a solution when facing a problem. It conveys worry about a situation and seeks advice or expresses helplessness.
要是明天下雨怎么办?
Yàoshi míngtiān xià yǔ zěnme bàn?
What do we do if it rains tomorrow?
钥匙丢了怎么办?
Yàoshi diū le zěnme bàn?
What do we do if the key is lost?
他不同意的话我们怎么办?
Tā bù tóngyì de huà wǒmen zěnme bàn?
What do we do if he doesn't agree?