沒
沒 – Mei2 – Have Not
Earlier I mentioned a way to ask questions using 不. In sentences with the verb 有 – You3 – Have, you use 沒 instead.
你會不會寫? – Ni3 Hui4 Bu4 Hui4 Xie3? – Do you know how to write?
你有沒有筆? – Ni3 You3 Mei2 You3 Bi3? – Do you have a pen?