a big family were crowded in a small house.为什么用were?怎样分辨何时用单

a big family were crowded in a small house.为什么用were?怎样分辨何时用单 a family of mice were in the kitchen为什么用were It will be a little crowded in the small house 虚拟语态if i were rich,i would buy a downtown house.为什么用were 29.They once lived in a house ____ windows were very small. there were stairs in the house on Mango Street_____ a small There were two small rooms in the beach house,______served a there is a family in a small country house. 1They have a big house in a small town. His family live in a small house () only two rooms got /Have/ or/ you / a small family?/ a big family 怎么用这些单词组成 i wish you were a fish in my dish 为什么用were?