2019届语法系列--状语从句2

Adverbs&AdverbialClauses2Grammar3一、时间状语从句2.表示时间先、后时,即主句的谓语动作发生在从句之前或之后。连词有：after(在……之后),before(在……之前)。Afterthechildrenhadgonetobed,shebegantoprepareherlessons.HehadlearnedEnglishforthreeyearsbeforehewenttoLondon.32.表示时间先、后时,即主句的谓语动作发生在从句之前或之后主要连词有：after(在……之后),before(在……之前)。Afterthechildrenhadgonetobed,shebegantoprepareherlessons.HehadlearnedEnglishforthreeyearsbeforehewenttoLondon.注意before引导状语从句的多种含义1.“……才”强调从句中谓语动作发生慢:Thebigfirelastedfourhoursbeforethefiremenbroughtitundercontrol.2.“还没来得及……就……”强调主句中谓语动作发生快:BeforeIcouldfigureoutwhathadhappened,heforcedmeintothecar.3.趁……1.You'dbetterwritethephrasesdownbeforeyouforgetthem.考点讲练33一、时间状语从句2.表示时间先、后时,即主句的谓语动作发生在从句之前或之后主要连词有：after(在……之后),before(在……之前)。Afterthechildrenhadgonetobed,shebegantoprepareherlessons.HehadlearnedEnglishforthreeyearsbeforehewenttoLondon.注意before引导状语从句的多种含义4.不知不觉多少时间已过去了Hewassoabsorbedinhisworkthatfourhourshadpassedbeforeheknewit.5.before常用于“Itwas/willbe…before…(要)过多久才……”和“Itwasn't/won'tbe…before…没有过多久就……”句型中Itwillbeanotherfivedaysbeforewefinishthistask.ItwasnotlongbeforeIforgotitall.考点讲练33一、时间状语从句3.表示习惯性、经常性,即从句描述的不是一次性动作,而是经常发生的习惯性动作。连词有everytime(每次),eachtime(每次),whenever(每当)等。Wheneverwemetwithdifficulties,theycametohelpus.Eachtimehecametotownhewouldvisitourschool.EverytimeIwenttohishouse,hewasout.3Thingswentwelluntil/tillonenightanaccidenthappened.Iknewnothingaboutituntil/tillhetoldme.34.表示持续性或瞬间性主要连词有：since(自从),eversince(自从),until(直到……才/为止),till(直到……才/为止)常用句型:Itis/was…since…Thingswentwelluntil/tillonenightanaccidenthappened.Iknewnothingaboutituntil/tillhetoldme.注意1until与till及not…until/till…的用法1.until和till都可表示“直到……为止”,与持续性动词的肯定式连用。Hewaiteduntil/tillwefinishedourmeal.2.当until和till表示“直到……才……”时,通常与短暂动词的否定式连用,这时,until和till含有before的意思。Ididn'tleaveuntil/tillshecameback.考点讲练334.表示持续性或瞬间性主要连词有：since(自从),eversince(自从),until(直到……才/为止),till(直到……才/为止)常用句型:Itis/was…since…Thingswentwelluntil/tillonenightanaccidenthappened.Iknewnothingaboutituntil/tillhetoldme.注意13.until引导的从句可以放在主句之前或主句之后,但till从句一般不放在句首。Untilhetoldme,Iknewnothingaboutit.4.当notuntil位于句首时,用倒装语序：NotuntilshecamebackdidIleave.=Ididn'tleaveuntilshecameback.5.在强调句型中一般用until,不用till。ItwasnotuntilshetookoffherdarkglassesthatIrealizedshewasafamousfilmstar.考点讲练3Itwasfiveyearsafterthewarbeforethecountrytookonaprosperouslook.战争结束5年后国家才开始复苏。Itwillbe3yearsbeforethesetreesbegintobearfruits.要过3年这些果树才能结果。注意2句型区别：It…before…;It…when…;It…since…A.Itwas+long/时间段+before…(did)…过了多久才…Itwillbe+long/时间段+before…(do/does)…要过多久才…否定式：Itwasnot+long/时间段+before…(did)…没过多久就…Itwillnotbe+long/时间+before…(do/does)…不要过多久就…Itwasn’tlongbeforehefinishedthework.Itwon’tbelongbeforewesaygoodbyetotheteachersandclassmatesandgotouniversity.句型区别：It…before…;It…when…;It…since…b.Itis+时间段+since…(did)…自从……以来，有多久了ItismorethantwoyearssinceIcametostudyinthisschool.我来这个学校上学已经有两年多了。c.Itwas+时间点+when…当……的时候，时间是……Itwasmidnightwhenhecamebackfromtheparty.他聚会结束回到家时已经是半夜了。选用适当的词填空3能力练习before1.Iexplainedthesentenceforthreetimes______heunderstoodme.2.Twoweeks_____shegotdivorced,sheleftherhometowntostartanewlife.3.Heswallowedthetablets________Icouldstophim.4.Getdowntostudying______itistoolate.5.Don'tleave_____therainhasstopped.after,before,untilbeforebeforeafteruntil3一、时间状语从句4.表示持续性或瞬间性。连词有：since(自从),eversince(自从),until(直到……才/为止),till(直到……才/为止)常用句型:Itis/hasbeen…since…Itisjustaweeksincewearrivedhere.YouhavebeenreadingtomeeversinceJameswentout.Thebigclockwhichusedtostrikethehoursdayandnightwasdamagedduringthewarandhasbeensilenteversince.(eversince可以放在句末,since则不能)1.Ricegrowswellwherethereisplentyofrainandsunshine.在阳光水分充足的地方，稻谷生长良好。2.Hankoulieswheretworiversmeet.汉口处于两江交汇处。3.Whentravellingwherethecustomsareforeigntoyourown,doasRomansdo.到风俗习惯有别于家乡的地方去旅行，要入乡随俗。4.Putitwhereitbelongs.把它放在原来的位置。5.Makeamarkwhereveryouhaveanyquestion.在有疑问的地方做个记号。二、地点状语从句where(在……的地方),wherever(无论哪里)区别where引导的定语从句、名词性从句、状语从句Tellmetheaddresswherehelives.告诉我他的住址。It’swhereyouputit.它就在你刚才放的地方。You’llfinditwhereitwas.你可以在刚才放它那地方找到它。注意(定语从句)(名词性从句)(地点状语从句）3练练口WuhanlieswheretheYangtzeandtheHanRivermeet.You'dbettermakeamarkwhereyouhaveanyquestions.Hewouldkeepintouchwithuswhereverhewas.Wherethereiswater,thereislife.Wherethereislove,thereisalsowealthandsuccess.•请你判断以下哪个是定语从句,哪个是地点状语从句。•A．ShallwehaveapartywherewemetlastSunday?•B．Haveyoubeentotheislandwheretherearemanymonkeys?•C．Pleaseputallthesebookswheretheyusedtobe.•D．Wewillgowhereweareneededmost.状语从句定语从句状语从句状语从句3三、原因状语从句常见连词as(由于),because(因为),since(既然),now(that)(既然)。偶见consideringthat(顾及到),seeingthat(由于)，inthat,giventhat（鉴于）,等连词引导。IdoitbecauseIlikeit.(because不能与so连用)Nowthat/Sinceyouareallhere,let'stryandreachadecision.Asshewasill,shedidn'tcometotheparty.Consideringthattheyarejustbeginners,theyaredoingquiteagoodjob.Seeing(that)quiteafewpeoplewereabsent,wedecidedtoputthemeetingoff.3because,as,for,since用法辨析类别用法例句becausebecause语气最强。下列情况下只能使用because:①在回答why的问句时;②在用于强调句型时;③被not所否定时。—Whydidyouleaveinsuchahurry?—BecauseIhadsomethingurgenttodealwith.考点讲练33because,as,for,since用法辨析类别用法例句forfor的语气不及because,since,as强,为