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1、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thatC．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 coun
2、try 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thatC．不可用who 代替whom5、非限制性定语从句举例 ：His mother, who loves him
3、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
4、年都要举行许多重要会议。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。Heisafarmer,as/whichisclearfromhismanner.Thiselephantislikeasnake,as/whichanybodycansee.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。Crusoelosthisdog,wh
5、ichmadehimverysadTaiwanispartofChina,as/whichisknowntoall.Aswehaveseen,oceanscovermorethan70percentoftheearth.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引导非限定性定语从句时与主句有一种因果关系，可译为“所以……”。Thecolor,asyouallknow,isdarkred.Bambooishollow,whi
6、chmakesitverylight.二、综合练习（一）先行词是人的定语从句：1.Ishetheman__________wantstoseeyou?2. Heistheprofessor____________Imetyesterday.3. Thefamousfilmstar,_______hasplayedmanyroles,willactasablindwomaninhernextfilm.4. Theman__________IwouldturnwhenIamintroubleismyChineseteache
7、r.5. Thisisthestudent_________Iliketoplay.6. Thegirl_________Ididn’tagreeisoneofthestudents________studyhardinourclass.7.Heistheteacher______sonisasoldier.8. Heistheteacher__________sonweoftenliketoargue.9 Heistheteacher__________classmysonstudy.10.Thereareabou
8、t15teachersinourgrade,some_________arewomenteachers.11. Sheisoneofthestudents___________(know)mysecret.12.Sheistheonlyoneofthestudents___________
