科技英语3 否定、被动语态、比较等级.ppt

《科技英语3 否定、被动语态、比较等级.ppt》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、第三章否定、被动语态、比较等级§3.1否定1、全否定：一般要用“none,no,neither”来表示，意为都；均。普通的窗户均承受（withstand）不了这么大的力。Noneoftheordinarywindows[=Noordinarywindows]canwithstandsolargeaforce.2、部分否定：一般用“all,both,every”+not来表示，意为并非都。Thisparameter（参数）doesnotchangeduringalltimeintervals.Eq.(1–5)cannotbesatisfiedbyallvaluesofx.§3.1否定

2、3、否定的转移（1）主句中有表示“相信”、“认为”等臆想动词否定式时，一般汉译时否定在从句中。（在科技文中不常见）§3.1否定not+thinkfeelsupposebelieveimagine+that从句Theydon’tthinkthatthisanswertotheproblemisright.§3.1否定～3、否定的转移（2）▲appearseemhappen的否定式+主语从句动词不定式Itdoesnotappearthatthisvaluesatisfiestheequation.Thiscomputerdoesnotseemtobesogoodasthatone.§3

3、.1否定～3、否定的转移Thisdiseasedoesnotaffectmostanimalsasitdoeshumans.Theselayers（层）arenot“stretched”（能拉伸的）asarubbersheetwouldbe.（3）★主句中有not[no,ratherthan,insteadof]+as从句或短语（或theway…）：译成“并不像…那样～”。§3.1否定～3、否定的转移Thepresenceoftheminussignindicatesthatthecurrentof1.5AflowsfromCtoF,andnotfromFtoCasshown.Th

4、eHIGH-leveloutputvoltagesforbothORandNORarebetween–0.81and–0.96Vratherthan–0.8V,aspredicted（预计）byEq.(2–9).§3.1否定～3、否定的转移Themajorityofdistancecommunicationinthefuturecouldwellbecomputer-to-computer,notperson-to-personasatpresent.§3.1否定～3、否定的转移TheMaxwellrelations（关系式）arenotmodified（修正）byrelativi

5、ty（相对论）asNewton’srelationsarewhenparticle（质点）velocitiesapproachthespeedoflight.§3.1否定～3、否定的转移1、带有双宾语动词（tell,inform,convince,give,assign,deny等等）的被动语态（在谓语后存在一个“保留宾语”）Inthiscasesomeoftheuserswillbedenied（拒绝给予）permission（允许）.Eachoftheusershasbeenassignedafrequencyband.§3.2被动语态WearetoldbyOhm’slawth

6、atthecurrentinacircuitisproportionaltotheappliedvoltage.IfthereaderisnotconvincedthatPisamaximumwhenR=r,heshouldverifyitbytheused（惯常的）calculus（微积分）method.§3.2被动语态In1858Darwin（达尔文）wassentascientificpaperbyamancalledAlfredWallace.Athoroughexpositionisaccordedprinciplesofacomputerinthisbook.Weare

7、giventhatthecoefficientofslidingfriction（滑动摩擦）betweenboxandfloorisμ.§3.2被动语态2、“不及物动词+介词”=“及物动词”的被动语态Electronicradarsystemsarereliedonforasafeflightfromoneairporttoanother.§3.2被动语态Inthiscasetheworkdoneisaccountedforbyanincreaseinpotentia