I've got four children.是何意思,为何要用have got?

I've got four children.是何意思,为何要用have got? 扩写）I've got= he's got= 还能写出更多的么?我的意思是：例：I've got=I have got那 英语句子“I've got so much to do.”中为何要加“got”? have you got a ticket?yes,i've got _ I've got she in me 中文意思是? I"ve got a new friend 中的 got 的意思 I've got a new friend中的got的意思 I've got a violin?中文意思 I’ve got two tickes.’ve是不是have的缩写? I‘ve got him I've got a I've got 造句