60as引导定语从句

as引导定语从句在限制性定语从句中，如果先行词被thesame,such,as,so等词修饰时，定语从句应由as引导。as作宾语不可省略。1)Heissuchateacheraswerespect.2)Ilikethesamebookasyoudo.•Itissobigastoneasnomancanlift.在定语从句中，一般的从句关系代词是which、who、whom、that、whose,其代替主句中的人或物，在从句中做主语、宾语或定语。一、as引导限制性定语从句主要结构有：thesame…asas…assuch…asso…as1.It’sthesamepersonaswewantedtofindyesterday.我们昨天要找的是同一个人。2.SuchgirlsasheknowsaregoodatEnglish.他所认识的女孩都擅长英语。3.Doyouhavesuchbooksaswelike?你有我们喜欢那种书吗？4.Shewillmarryashealthyamanasshecanfind.她将嫁给她能找到的任何一个有钱人。5.Thereissowarmahouseaswewanttolivein.这里有如此暖和的房子，我们都想住在里面。6.Hehassodifficultaproblem,asnoneofuscansolve.他有如此难的一个问题，我们没有人能解决。二、引导非限制性定语从句⑴as引导非限制性定语从句，指代整个主句内容，从句可置于句首，句中或句尾1．Aseveryoneknows,Chinaisabeautifulcountrywithalonghistory.每个人都知道，中国是一个有着悠久历史的美丽国家。2．Theearth,asweknow,movesroundthesun.地球，我们都知道，围着太阳转。3．Tomworkshardandiswillingtohelpothers,asweallknow.汤母工作努力，并且乐于助人，这一点我们都知道。as引导非限制性从句，常意为“正如”。可出现在句首、句中、句末。常见结构有：•asisknowntoall众所周知•asisoftenthecase•asmight/couldbeexpected•ashasbeensaidbefore•ashasbeenmentionedabove•ashasbeenpointedout•ascanbeimagined正如所设想的那样•ascanbeseen(fromthesefigures)•asoftenhappens正像经常发生的那样•aswillbeshown这是常有的事正如人们所预料的正如上面所提到的正如前面所说的正如所指出的正如…所示as和which都可以指代主句中的一部分或整个句子的内容，有时可以互换，但as引导的非限制性定语从句位置比较灵活，可以位于主句前面，中间或后面，一般用逗号与主句隔开，而which所引导的非限制性定语从句只能放在主句之后。As和Which引导的非限制性定语从句的区别1.Asyouknow,TaiwanisaninseparatepartofChina.2.Taiwan,asyouknow,isaninseparatepartofChina.3.TaiwanisaninseparatepartofChina,asyouknow.4.TaiwanisaninseparatepartofChina,whichyouknow.位置不同As与which的区别1.Theyremarried,asweexpected.2.Theyremarried,whichwehadn’texpected3.Asoftenhappens,theywonthematchagain.4.Itrainedheavily,whichpreventedusgoingout..意义不同（as“正如，就像”表示符合人们的认识和事物的习惯性等意义，即从句与主句语义一致。当从句与主句语义不一致时或从句与主句之间是因果关系时用which）asanybodycansee,asweallknow,aswehadexpected,asiswellknown,ashasbeensaidbefore,asoftenhappens,asitis,asisnatural,asisthecase1.Asisknowntoeverybody,themoontravelsroundtheearth.2.Mike，asweexpected,attendedthemeeting.3.Shecameatonce,whichsurprisedmeverymuch.4.Thegirlheardaterriblenoise,whichbroughtherheartintohermouth.结构不同(as常用于一些固定结构中，类似插入语，而which常用于which+谓语+宾语/宾补结构。定语从句易混句型1.①Istillrememberthedays_______Iworkedwiththefarmers.②Istillrememberthedays_______IspentwiththefarmersA.whichB.onwhichC.whenD.what2.①Wewereontheway______itbegantorain.②Idon’tliketheway_____youspeaktoyourparents.A.whenB.thatC.howD.whichwhenwhichwhenthat3.①Theteacherdidn’tknowthereason_______shewasabsentyesterday.②Theteachercouldn’tacceptthereason______sheexplainedyesterday.A.howB.whyC.thatD.who4.①Isthisschool___youevervisited?②Isthistheschool___youeverstudied?③Isthistheschoolin__youeverstudied?A.whereB.whichC.thatD.theonewhythatDAB5.①Thisis______hesaidathemeetingyesterday.②Thisisall____hesaidatthemeetingyesterday.A.thatB.whichC.whatD.how6.①_____isreportedinthenewspapers,theyhavebeatenalltheotherteams.②____isreportedinthenewspaperthattheyhavebeatenalltheotherteams.③____isreportedinthenewspaperisthattheyhavebeatenalltheotherteams.A.ItB.AsC.WhichD.WhatCABAD7.①Thatisthehouse,______windowshasn’tbeencleanedformonths.②Thatisthehouse,______thewindowshasn’tbeencleanedformonths.③Thatisthehouse,but______windowshasn’tbeencleanedformonths.A.it’sB.itsC.whoseD.ofwhichCDA8.①Johnsaidhe’dbeenworkingintheofficeforhours,______true.②Johnsaidhe’dbeenworkingintheofficeforhours,but______true.A.hewasB.itwasC.whichwasD.whowasCB相同之处：当先行词指整个主句的意思时,这类非限制性___________只能由_________或________来引导。两者的区别在于：1.which引导的定语从句只能位于_______,而as引导的定语从句可位于________________。（位置）2.______常译作“这”;而____常译作“正如”,且多与see,expect,imagine,know,hope等动词连用。（含义）3.在定语从句中作主语时,若用_____,其谓语部分一般有be;若谓语是不含be的行为动词时,要用________。4.________引导的定语从句只表示一个众所周知或意料之中的事,而which不受此限制。5.as常用于固定搭配中:asisoftenthecase(这是常有的事),asweexpected(不出所料);asoftenhappens(正如经常发生的那样)；asisknowntoall(众所周知);ashasbeensaidbefore(正如以前所说);asismentionedabove(正如上面所提到的)等。主句后主句前、中、后whichasaswhichas定语从句whichas