托福考试语法指导：从属连词及真题要点解析托福考试语法指导：从属连词及真题要点解析复合句是TOEEL考题的基本句子结构，因而连接主句和从句的连接词就成为重要的命题焦点。TOEEL常考的从属连词分三类：(1)关系代词(that，which，whatwho.Whose)(2)关系副词(wherewhenwhyhow)(3)状语从句连接词(where，when，if，though，because…)有关从属连词的试题大部分集中在Structure(1-15题中)掌握命题规律，这类题目并不复杂。从属连词常考题型及解题要点1.主句与从句之间必须有从属连词全真例题分析(1)Thespiralthreadsofaspider*swebhaveastickysubstanceonthem-------insects。(A)traps(B)trapits(C)whichtraps(D)whichittraps(92.1)［答案］C定语从句关系代词which引导从句，且在从句中作主语。(2)Angiospermsinhabitrelativelydiverseenvironmentsandmaybefound-------higherplantscansurvive。(A)there(B)wherever(C)somewhere(D)then(92.5)［答案］B空格前后为两个完整的句子，这里应填入连接词联系主从两句。四个选择只有wherever是连词，引导地点状语从句。(3)DukeWellingtonwasacomposer.Conductor，andpianist------rankedasoneofthegreatestofalljazzfigures。(A)him(B)although(C)or(D)who(92.10)［答案］D关系代词who引导定语从句，并作从句的主语。(4)-------。SomeoftheEarth*sinteriorheatescapestothesurface。(A)Avolcanoerupts(B)Avolcanowhethererupts(C)Avolcanoeruptsit(D)Ifavolcanoerupts(93.5)［答案］D从属连词引导条件状语从句。2.关系代词who与which混淆错用解题要点：在writtenExpression(16-40题)中的四个选择答案中出现who或者which，应确认它所指代的是人还是物。全直例题分析(1)FossilremainsindicatethatsquidlikecreaturescalledbelemnitesswamintheseawhocoveredtheNorthAmericancontinent70millionyearsago.(94.5)［答案］C关系代词who指代的是sea，因此应用指物的which或that。(2)Vaccinesforsomerarediseasesaregivenonlytopersonswhichriskexposuretothedisease.(93.1)［答案］B关系代词which指代前面的persons，应改为人称关系代词who。(3)AnneElizabethMcDowellisbestrememberedforaweeklyjournal，theWoman*sAdvocate，whoshelaunchedinJanuary1855.(91.8)［答案］D关系代词who指代杂志thewoman*sAdvocate，故应改为which。(4)TheattorneygeneraloftheUnitedStatesadvisesthePresidentonanyquestionsoflawwhomayariseintheconductofadministrativeaffairs.(90.10)［答案］B关系代词who指代前文的questionsoflaw，故应改为which或that。3.介词＋关系代词which结构解题要点介词＋which作用相当于一个关系副词，在从句作状语。可表示时间(＝when)，地点(=where)，原因(＝why)等等。全真例题分析(1)InreorganizingthecurriculumofMt.HolyokeCollegeinthelate1800*sElizabethMeadlaidthefoundation-------themoderncollegerests。(A)iswhich(B)onwhic