Step 1: Some practical explanations of Attributive Clause
一、经常使用定语从句的场合:
1.先行词为独一无二的物体时。如：The sun, which rises in the east, gives us heat and light.太阳从东边升起，给我们发出光和热。
2.先行词是指物的专有名词时。如：
The Great Wall, which is called in Chinese “The Ten Thousand Li Great Wall”, is actually more than 6,000 kilometers long.
长城，中国人称作“万里长城”，实际上 6,000多公里。
3.先行词指物且被指示代词或人称代词所修饰时。如：This is her house, which was built last year. 这是她的房子，是去年建的。
4.定语从句修饰整个主句时。如：He is from America, which I know from his accent. 他是美国人，这一点我从他的口音可以断定。
