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1、WordstudyIsitformaltowearcausaldressesataformalwesterndinnerparty?Isitpolitetospeakloudlyatadinnerparty?informalimpoliteWordstudyTheprefixes,in-,im-,non-andun-，allchangethemeaningofawordtoitsopposite.Otherexamples:non+smoker=non-smoker(meaning“peoplewhodon’t
2、smoke”)un+usual=unusual(meaning“notusual,strange”)Whichofthefollowingwordshavenegativeprefixes?nonstopunfoldincorrectimportantunderstandinviteunluckyimpossibleuniforminterestingReview1.TheoldmanisourEnglishteacher.Heisstandingatthegate.Theoldmanwhoisstanding
3、atthegateisourEnglishteacher.2.Theyplantedalotoftrees.Thetreesdidn'tneedmuchwater.Theyplantedalotoftreeswhichdidn'tneedmuchwater.3.I’mlookingforayoungman.HisnameisJeff.I’mlookingforayoungmanwhosenameisJeff.TheRestrictiveAttributiveClauseGrammarTheRestrictive
4、AttributiveClauseAndTheNon-restrictiveAttributiveClauseWhatdifferencescanyoufind?Shehasason,whoisnowaprofessorinakeyuniversity.Shehasasonwhoisnowaprofessorinakeyuniversity.她有个儿子，现在是一所重点大学的教授。（非限制性定语从句）她有个在一所重点大学当教授的儿子。（限制性定语从句）Theyoungmansaidnothingthatmadeh
5、erangry.Theyoungmansaidnothing，whichmadeherangry.这个年轻人没有说使她生气的话。（限制性定语从句）这个年轻人什么也没有说，这使她很生气。（非限制性定语从句）限制性定语从句和非限制性定语从句:(1)限制性定语从句对先行词起限制、确定的作用，是先行词不可缺少的定语，如果省去，主句的意思就会不完整，不明确或不合逻辑。这种定语从句和主句之间不能用逗号隔开。((2)非限制性定语从句和先行词关系松散，只是对先行词作附加说明，如果省去，主句的意思仍然完整或清楚。这种定语从句和主
6、句之间须用逗号隔开。R.A.C限制性定语从句N.R.A.C非限制性定语从句逗号无有从句不可省可省关系代词和关系副词that/which/who/whom/whose/when/where…which/who/whose/when/where/whom/as…（无that）Conclusion:Group1A.ThisnotewasleftbyTom,whowashereamomentago.B.Beijing,whichisthecapitalofChina,isaverybeautifulcity.C.Mym
7、other,whomyoumetlastmonth,keepstellingmetoworkharder.D.Thewriter,whosebooksarepopularwithus,willvisitourschooltomorrow.由第一组例句可知，关系代词which,who,whom,whose等可以引导非限制性定语从句。注意：非限制性定语从句不能用关系代词that引导。Group2A.HewillcometoseemenextJuly,whenhewon’tbesobusy.B.Wewenttothe
8、playground,wherelotsofstudentswerehavingsports.由第二组例句可知，关系副词when,where等可引导非限制性定语从句。Group3A.Thefamilylivedinabighouse,infrontofwhichstoodmanytalltrees.B.ShetalkedalotaboutMr.Smith,withwhomshehads
