如果你想询问你家里有没有玩具熊，你可以说："Is there a stuffed bear in my house?"

如果你想描述你家里有一只玩具熊，你可以说："There is a stuffed bear in my house."

如果你想问别人家里有没有玩具熊，你可以说："Do you have a stuffed bear in your house?"

希望这些例句能帮到你。