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高中英语知识点大全
(13)as/which引导定语从句异同
1、as/which引导定语从句异同as/which都能引导限制性或非限制性的定语从句1在引导限制性定语从句时;
①which从句修饰的先行词是名词(词组),which可与that换用,作宾语时可省去如Thengrowsometomatoesinoneboxwhichhasplantfoodinthesoilandsomeinanotherboxwhichdoesn’t.Butthestudioswhichhestartedarestillbusytodayproducingmoreandmoreinterestingfilms.
②as从句的先行词是thesame/such或被thesame/such修饰;as可作主、宾、表语,一律不可省略如Manyofthesportswerethesameastheyarenow.(as作表语)HeusesthesamemapasIuse.他和我用的是同一份地图(as作宾语)Suchasbeautifulparkasisbeingbuiltwasdesignedbytwoyoungengineers.正在建造的如此漂亮的公园是由两个年轻的工程师设计的(as作主语)Theprintednewspaperwasnotsuchasthechiefeditorhadexpected.印好的报纸并非如主编原来所期望的那样(as作宾语)2在引导非限制性定语从句时,aswhich都可作主、宾、表语,都不可省去
①which从句补充说明先行词的用途、性质、状态、特征等如AtpresentthebiggestnatureparkformiludeerinChinaisintheNanhaiziMiluParkwhichisabout20kilometressouthofBeijing.位置ChinaDailyhasplentyofadvertisementswhichhelptocut thecostsofmakingthenewspaper.用途OneofCharileChaplin’smostfamousfilmswas“TheGoldRush”whichwasmadein
1925.时间Nowhoweverthematersofthisgreatlakewhichisalsothe World’sdeepestover1740metreshavebeendirtiedbywaste fromachemicalfactory.特征
②which从句还可表示说话人的看法,也可对主句作意义上的补充;which=andit/this/that/they;which代表的是先行词、主句或主句的一部分;which从句只能放在先行词或主句后如Hesaidshecouldspeak4foreignlanguageswhich=anditisnottrue.他说她会四门外语,这是不可能的(说话人看法,which代表宾语从句部分)比较Hesaidshecouldspeak4foreignlanguageswhich=andthatsurprisedeveryoneofus.他说她会四门外语,这使我们每个人都很惊讶(补充主句,which代表主句)Leavesareturningyellowwhichmeansautumniscoming. 树叶正在变黄,这意味着秋天就要来了
③as也可代表先行词、主句或主句一部分但as有“正如”的意义,其从句可放在主句前或后,如TheNanjingChangjiangRiverBridgeasweallknowwascompl-etedin
1969.我们都知道南京长江大桥,它建成于一九六九年(as代表先行词)Toshutyoureyestofactsasmanyofyoudoisfoolish.如你们许多人(所做的那样)对事实视而不见是愚蠢的(as代表主语部分)Asweknowtheearthisround. 我们知道,地球是圆的
2、keepoutof=keepsth.sb.outofkeepoutof=keepsth.sb.outof不使入内;不牵涉进去
①Warmclothingwillkeepthecoldout.保暖的衣服可御寒
②Keepoutoftheirquarrels.不要参与他们争吵
3、attention 短语payattentiontosth. 注意某事drawone’sattentiontosth. 引起某人的注意beworthone’sattention 值得某人注意bringone’sattentiontosth. 叫某人注意某事。