… which …

结构︰

主语＋动词＋名词（物）＋关系代名词（which）＋动词…。

说明︰

which 可作主格或受格<关系代名词>，引导<形容词子句>，前面的先行词接“动物”或“事物”，后面接<动词>，必须和先行词保持一致。

Here is a book, which is very interesting.
这里有一本非常有趣的书。
I like to watch TV programs which are about sports.
我喜欢观赏有关运动的电视节目。
They want to sell the house, which has only one door.
他们想卖掉那幢只有一扇门的房子。