A flat is usually in a building. There are usually many families living in the same flat building. People in a flat building share the stairs and lift(电梯)to go up and down.

A townhouse has two floors. In a townhouse, the kitchen, the living room and dining room are usually on the ground floor(层),and the bedrooms are usually on the first floor.

A farmhouse is a house on a farm. There are many farmers living there. There is a large yard in front of it. The field(田地)is not far from the farmhouse, so farmers always go to the field on foot.

A dormitory is a large bedroom in a school, and every four to eight students share one dormitory. Students have their own beds, and they need to share toilets (厕所).Students can learn how to get along well with each other in a dormitory.