英语论文SCI写作的万能句型

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1、....文献简介1.RecentlyinvestigatorshaveexaminedtheeffectsofXonY.2.Inthepasttwodecadesanumberofresearchershavesoughttodetermine......3.Previousstudieshavereported......4.AconsiderableamountofliteraturehasbeenpublishedonX.Thesestudies......5.Smith(1984:217)showshow,inthepast,researchintoXwas

2、mainlyconcernedwith.......6.SurveyssuchasthatconductedbySmith(1988)showedthat......7.ThefirstseriousdiscussionsandanalysesofXemergedduringthe1970swith......8.Recentevidencesuggeststhat.......9.Severalattempshavebeenmadeto......10.Anumberofresearchershavereported......11.Xswerereportedi

3、nthefirstmodelsofY(e.g.,Smith,1977;Smith,&Patel,1977).12.WhatweknowaboutXislargelybaseduponempiricalstudiesthatinvestigatehow......StudiesofXshowtheimportanceof.....强调研究领域存在的问题1.However,theserapidchangesarehavingaseriouseffect......2.However,amajorproblemwiththiskindofapplicationis....

4、..3.LackofXhasexistedasahealthproblemformanyyears.Despiteitssafetyandefficacy,Xsuffersfromseveralmajordrawbacks:4.However,researchhasconsistentlyshownthatfirstyearstudentshavenotattainedanadequateunderstandingof......5.ThereisincreasingconcernthatsomeXsarebeingdisadvantaged......6.Desp

5、iteitslongclinicalsuccess,Xhasanumberofproblemsinuse.7.Questionshavebeenraisedaboutthesafetyofprolongeduseof......专业....强调研究领域存在的争议1.Todatetherehasbeenlittleagreementonwhat......2.Morerecently,literaturehasemergedthatofferscontradictoryfindingsabout.....3.Oneobserverhasalreadydrawnatte

6、ntiontotheparadoxin......4.InmanyXsadebateistakingplacebetweenYsandZsconcerning......5.ThecontroversyaboutscientificevidenceforXhasragedunabatedforoveracentury.6.Debatecontinuesaboutthebeststrategiesforthemanagementof......7.Thisconcepthasrecentlybeenchallengedby.......studiesdemonstra

7、ting.......强调研究领域的知识差距1.Sofar,however,therehasbeenlittlediscussionabout......2.LittleisknownaboutXanditisnotclearwhatfactors.......3.However,fartoolittleattentionhasbeenpaidto......4.Inaddition,noresearchhasbeenfoundthatsurveyed.......5.Sofarthismethodhasonlybeenappliedto......6.This