北京四合院,实际就是合院建筑之一种,所谓合院,即是一个院子四面都建有房屋,四合房屋,中心为院,这就是合院。合院在北京的胡同中,以东西方向的胡同为例,南面一大排,为南面的合院;北面一大排,为北面的合院,一户一宅,一宅有几个院。合院以中轴线贯穿,北房为正房,东西两方向的房屋为厢房,南房门向北开所以叫作倒座房,人口多时,可建前后两组合院南北相连。有钱的人家摆阔气,可以建设三个或四个合 Beijing Siheyuan, is actually a courtyard building, the so-called courtyard, that is, a courtyard built on all sides houses, Sihe house, the center for the hospital, which is the compound. The courtyard in Beijing’s alley, with the east-west direction of the alley, for example, south of a large row for the south of the courtyard; north of a large row, north of the courtyard, a house, a house has several homes. The courtyard runs through the central axis, the north room is the main house, the east-west two-way house is the wing, and the southern one is northwardly open, so it is called the inverted house. Rich people spend their time, you can build three or four together