i haven't had a key这句话在语法上正确吗?

i haven't had a key这句话在语法上正确吗? I haven't any butter.这句话在语法上有错误吗?错在哪? I haven't had any change yet!在这句话中had是什么意思,起什么作用? I have a key和 I have got a key这两句话都正确吗? I haven't key 和 I haven't got key!有什么区别吗?这两句句子都对吗? i haven't had mango,have you ?我没吃过芒果,你吃过吗?这句英文语法正确吗? 过去完成式这句话对吗I haven't had a meal all day I haven't had a haircut I haven't got my bag.这句话如何翻译?haven't got是什么意思又是什么语法? I haven't had any vegetables.这句话该怎么翻译! They had been talking when I arrived.这句话在语法上怎么解释? 这句话语法正确吗i just wanna love you but you don't give me even a c