限制性定语从句与非限制性定语从句一、限制性定语从句 1、形式上:不用逗号“,”与主句隔开。2、意义上:是先行词不可缺少的定语,如删除,主句则失去意义或意思表达不完整。3、译法上:译成先行词的定语:“...的”4、关系词的使用上:A.作宾语时可省略 B.可用 that C.可用 who 代替 whom5、限制性定语从句举例:The teacher told me that Tom was the only person that I could depend on. 老师告诉我说汤姆是我唯一的可以依靠的人。China is a country which has a long history. 中国是一个历史悠久的国家。In the street I saw a man who was from Africa. 在街上我看到一个来自非洲的人。二、非限制性定语从句1、形式上:用逗号“,”与主句隔开。2、意义上:只是对先行词的补充说明,如删除,主句仍能表达完整的意思。3、译法上:通常译成主句的并列句。4、关系词的使用上:A.不可省略 B.不用 that C.不可用 who 代替 whom5、非限制性定语从句举例 :His mother, who loves him very much, is strict with him. 他妈妈十分地爱他对他要求很严格。China, which was founded in 1949, is becoming more and more powerful. 中国是 1949 年成立的, 现在正变得越来越强大。Last summer I visited the People’s Great Hall, in which many important meetings are held every year. 去年夏天,我参观了人民大会堂,在那儿每年都要进行许多重要会议。注意:as 和 which 引导的非限定性定语从句的比较:1)非限定性定语从句位于句未,而且 as 和 which 在从句中作主语、宾语、表语时可互换。He is a farmer, as/which is clear from his manner.This elephant is like a snake, as/which anybody can see.2)which 引导的非限定性定语从句一般放在句未,而 as 引导的非限定性定语从句可放在句未,也可放在句中、句首。 放在句首时不能用 which 替换,只能用 as。Crusoe lost his dog, which made him very sadTaiwan is part of China, as/which is known to all.As we have seen, oceans cover more than 70 percent of the earth.3)as 引导非限定性定语从句时,意为“这一点、这件事” “正如…”,常与 see, hope,expect,know,guess 等动词搭配;而 which ...