△状语从句讲解△第三章状语从句6.once引导时间状语从句的用法once引导时间状语从句时含有条件意味,译为“一旦”。【例12】________theydecidewhichcollegetogoto,studentsshouldresearchtheadmissionprocedures.(2010·北京)A.AsB.WhileC.UntilD.Once答案:D7.before引导时间状语从句的用法表示“在……之前”。常用的句型:Itwillbesometimebefore...意为“要过一段时间才……”。【例13】Johnthinksitwon’tbelong________heisreadyforhisnewjob.(2010·陕西)A.whenB.afterC.beforeD.since答案:C【例14】—Whydidn’tyoutellhimaboutthemeeting?—Herushedoutoftheroom________Icouldsayaword.A.whenB.untilC.beforeD.after答案:C注:before的反义词是after,两者可以转换。如:Wehadstayedherefourdaysbeforewewenthome.→Afterwehadstayedherefourdays,wewenthome.2.as引导让步状语从句的用法as引导让步状语从句时,意为“虽然”,从句中的形容词、副词、名词或动词原形置于句首。(若是名词,其前一般不用冠词。)【例37】________,hecan’tknoweverything.A.AsheiscleverB.AscleverheisC.CleverasheisD.Ateacherasheis答案:C【例38】Try________Imay,Idon’tthinkI’llsucceed.A.asB.evenifC.althoughD.though答案:A/D3.what引导方式状语从句的用法what引导方式状语从句,一般只用于AistoBwhatCistoD这一句型中,意思是“A对于B的重要性,就如同C对于D的重要性一样”。【例50】Readingistothemind________foodistothebody.A.whatB.thatC.whichD.ofwhich答案:A△状语从句测试△单击此处进入状语从句测试