最新英语sci写作的万能句型.docx
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最新英语sci写作的万能句型.docx
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最新英语sci写作的万能句型
文献简介
1.RecentlyinvestigatorshaveexaminedtheeffectsofXonY.
2.Inthepasttwodecadesanumberofresearchershavesoughttodetermine......
3.Previousstudieshavereported......
4.AconsiderableamountofliteraturehasbeenpublishedonX.Thesestudies......
5.Smith(1984:
217)showshow,inthepast,researchintoXwasmainlyconcernedwith.......
6.SurveyssuchasthatconductedbySmith(1988)showedthat......
7.ThefirstseriousdiscussionsandanalysesofXemergedduringthe1970swith......
8.Recentevidencesuggeststhat.......
9.Severalattempshavebeenmadeto......
10.Anumberofresearchershavereported......
11.XswerereportedinthefirstmodelsofY(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......
3.LackofXhasexistedasahealthproblemformanyyears.Despiteitssafetyandefficacy,Xsuffersfromseveralmajordrawbacks:
4.However,researchhasconsistentlyshownthatfirstyearstudentshavenotattainedanadequateunderstandingof......
5.ThereisincreasingconcernthatsomeXsarebeingdisadvantaged......
6.Despiteitslongclinicalsuccess,Xhasanumberofproblemsinuse.
7.Questionshavebeenraisedaboutthesafetyofprolongeduseof......
强调研究领域存在的争议
1.Todatetherehasbeenlittleagreementonwhat......
2.Morerecently,literaturehasemergedthatofferscontradictoryfindingsabout.....
3.Oneobserverhasalreadydrawnattentiontotheparadoxin......
4.InmanyXsadebateistakingplacebetweenYsandZsconcerning......
5.ThecontroversyaboutscientificevidenceforXhasragedunabatedforoveracentury.
6.Debatecontinuesaboutthebeststrategiesforthemanagementof......
7.Thisconcepthasrecentlybeenchallengedby.......studiesdemonstrating.......
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.Thisindicatesaneedtounderstandthevariousperceptionsofpovertythatexistamong......
7.However,theevidenceforthisrelationshipisinconclusive......
8.WhatisnotyetclearistheimpactofXon......
9.TheneurobiologicalbasisofthisXispoorlyunderstood.
10.However,muchuncertaintystillexistsabouttherelationbetween......
11.Untilrecently,therehasbeennoreliableevidencethat......
12.However,therehavebeennocontrolledstudieswhichcomparedifferencesin......
13.SeveralstudieshaveproducedestimatesofX(Smith,2002;Jones,2003),butthereisstillinsufficientdatafor.....
14.NopreviousstudyhasinvestigatedX
15.Althoughextensiveresearchhasbeencarriedouton....,nosinglestudyexistswhich......
强调前人研究的不足之处
1.MoststudiesinthefieldofXhaveonlyfocussedon......
2.MoststudiesinXhaveonlybeencarriedoutinasmallnumberofareas.
3.Thegeneralisabilityofmuchpublishedresearchonthisissueisproblematic.
4.Theexperimentaldataarerathercontroversial,andthereisnogeneralagreementabout......
5.Suchexpositionsareunsatisfactorybecausethey.....
6.However,fewwritershavebeenabletodrawonanystructuredresearchintotheopinionsandattitudesof......
7.TheresearchtodatehastendedtofocusonXratherthanY.
8.TheexistingaccountsfailtoresolvethecontradictionbetweenXandY.
9.ResearchershavenottreatedXinmuchdetail.
10.PreviousstudiesofXhavenotdealtwith......
11.Halfofthestudiesevaluatedfailedtospecifywhether......
12.However,muchoftheresearchuptonowhasbeendescriptiveinnature....
13.AlthoughextensiveresearchhasbeencarriedoutonX,nosinglestudyexistswhichadequatelycovers......
14.However,theseresultswerebasedupondatafromover30yearsagoanditisunclearifthesedifferencesstillpersist.
15.X'sanalysisdoesnottakeaccountof.....nordoesheexamine......
重申研究目的
1.PartoftheaimofthisprojectistodevelopsoftwarethatiscompatiblewithXoperatingsystem.
2.Themainpurposeofthisstudyistodevelopanunderstandingof......
3.Therearetwoprimaryaimsofthisstudy:
1.Toinvestigate......2.Toascertain......
4.Theaimofthisresearchprojecthasthereforebeentotryandestablishwhat......
5.Theaimofthisstudyistoinvestigatethedifferencesbetween......
6.Themainaimofthisinvestigationistoassessthedosesandrisksassociatedwith......
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