which引导的定语从句在英语语法中，尤其是在定语从句中是比较常见的，经常在做题或者阅读过程中会遇到。那么which引导的定语从句有哪几种呢？下面我们来总结一下：
1.表达主从句因果关系
如：A Jew. Albert Einstein had to flee Germany. Which then was ruled by Hitler
爱因斯坦只得逃离德国,因为当时的德国是在希特勒的统治之下)
2.表达主从句目的关系
如：The Southern States set up a separate state of their own, in which they would be free to keep Negroes as slaves
南方各州却反叛建立一个独立王国,以便好继续维持奴隶制度
3.表达主从句让步关系
如：He gave up his cause in which he had been very successful and joined in our project
他的事业尽管干得很出色,他还是放弃了,加入到我们的课题研究中来
4.表达主句动作产生的结果
如：European football is played in 80 countries, which makes it the most Popular sport in the world
欧式足球有30个国家在踢,因之成为全世界最流行的一项体育运动
5.表示主从句条件关系
如：The past experience, which is not forgotten, is the guide for the future
前事不忘,可为后事之师
6.表示主从句时间关系
如：He was born on October 1,1949, which saw the foundation of the People’s Republic of China
他出身在一九四九年十月一日,恰好是中华人民共和国成立的那一天
7.对主句内容作补充说明
如：Inspite of his glorious past, he has fallen into the people’s enemy at last, which is a good lesson for all of us
尽管有着辉煌的过去,他最终还是堕落为人民的敌人,这对我们大家是个很好的教训
如：The sentence was announced on Nov. 8 following trials, which started in Sept.
审判于九月开始.多次审判后,判刑才于十一月八日宣布
8.用于主从句对比关系
如：He idled away his youth which he should have spent in leaning
他的青春年华本应用于增长才干,而他却虚度过去了
9.用于表示世界上独一无二的人或事物；或当事人认为是独一无二的事物
如：All the books here, which have beautiful pictures in them, were written by him
这里所有的书都是他写的,里面都有精美的插画
10.表示与主句或先行词的同位关系
如：The speed of sound in air at ordinary temperature is about 1,100 feet per second, which is about 700 miles per hour
常温下声在空气中的速度是大约每秒1,100英尺,即大约是小时传播700英里远.
