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1、让步状语从句e.g.Youngthough/asheis,hecanreadandwriteinseveralforeignlanguage.（表语提前）Childthough/asheis,heknowsalot.（表语名词提前并常省去冠词）Muchthough/asIadmirehisfather,Idon’tlikeJohn.（副词提前）though引导的让步状语从句可顺装也可以倒装，although只能顺装，as只能倒装Trythough/asyoumay,youmightfailaswell.(实义动词提前)Borrowthebookthough/asyoumay,youm
2、ustreturnitontime.(实义动词有宾语和状语提前)Thoughhewasasmallchild,heknewwhatwastherightthingtodo.=Childas/thoughhewas,heknewwhatwastherightthingtodo.as/though引导的让步从句必须表语或状语提前（形容词、副词、分词、实义动词提前）。注意:a.句首名词不能带任何冠词。b.句首是实义动词，其他助动词放在主语后。如果实义动词有宾语和状语，随实义动词一起放在主语之前。while引导的让步状语从句时相当although但while从句只能置于句首，且不可倒装。e.
3、g.WhileIamnotoptimistic,Ihavenotgivenuphope.Althoughheworkshard,hemakeslittleprogress.=Thoughheworkshard,hemakeslittleprogress.=Hardthoughheworks,hemakeslittleprogress.=Hardasheworks,hemakeslittleprogress.他虽然已经精疲力竭了，但仍然继续工作Althoughhewasachild,heknewwhatwastherightthingtodo.Thoughhewasachild,hek
4、newwhatwastherightthingtodo.Childthoughhewas,heknewwhatwastherightthingtodo.Childashewas,heknewwhatwastherightthingtodo.虽然他是一个孩子，但他知道该做什么though能与even连用，但although不能。eventhough等同于evenif，表示“即使，尽管，虽然….也”其所表达的意思比although更强烈We'llmakeatripeventhoughtheweatherisbad.I’llgoevenif(though)itrainstomorrow即使
5、明天下雨，我也要去。evenif/eventhough引导的状语从句中，动词用虚拟语气和陈述语气时要表达的意义不同。EvenifIwereill,Iwouldattendthemeeting(即使我生病了，我也要参加会议）EvenifIamill,Iwillattendthemeeting.（虽然我生病了，我也要参加会议）虚拟语气，事实上我没有生病陈述语气，我现在的确生病了whateverwhoeverwhicheverwheneverwhereverhoweverwh-everNomatterwhoNomatterwhichNomatterwhereNomatterwhenNoma
6、tterwhereNomatterhownomatter+疑问词/wh－ever*nomatter+wh-与wh-ever有何区别1.引导让步状语从句，nomatterwhat/when/where/who/which/how就相当于whatever,whenever,wherever,whoever,whichever和however,表示“无论什么/无论何处/无论谁/无论哪一个/无论如何”。e.g.Nomatterwho/whoeveryouare,youaretoobeythelaw.2.nomatter+wh-只能引导让步状语从句，不能引导名词性从句。3.wh-ever结构中
7、：whenever,wherever和however只能引导让步状语从句；而whatever,whoever和whichever除了可以引导让步状语从句外，还可以引导名词性从句。e.g.①Wheneversheseesanyoneintrouble,shewillhelphimwithouthesitation.(让步状语从句)②Whateverhappens,hemanagestostaycalm.(让步状语从句)③Whateverisworthdoin
