语法是英语的基础，贯穿于整个英语四级考试题型中，新东方网英语四级频道为了帮助考生自测英语四级语法薄弱环节，整理了九类英语四级语法自测练习题，希望对英语四级考生有所帮助。
1.Thefluisbelieved________byvirusesthatliketoreproduceinthecellsinsidethehumannoseandthroat.
A.causeB.beingcausedC.tobecausedD.tohavecaused
2.Theflowers________sweetinthebotanicgardenattractthevisitorstothebeautyofnature.
A.tosmellB.smellingC.smeltD.tobesmelt
3.Thedisc,digitally________inthestudio,soundedfantasticatthepartythatnight.
A.recordedB.recordingC.toberecordedD.havingrecorded
4.Havingbeenattackedbyterrorists,________.
A.doctorscametotheirrescueB.thetallbuildingcollapsed
C.anemergencymeasurewastakenD.warningsweregiventotourists
5.Robertissaid________abroad,butIdon’tknowwhatcountryhestudiedin.
A.tohavestudiedB.tostudyC.tobestudyingD.tohavebeenstudying
6.Themanagersdiscussedtheplanthattheywouldliketosee________thenextyear.
A.carriedoutB.carryingoutC.carryoutD.tocarryout
7.I’veworkedwithchildbefore,soIknowwhat________inmynewjob.
A.expectedB.toexpectC.tobeexpectingD.expect
8.________suchheavypollutionalready,itmaynowbetoolatetocleanuptheriver.
A.HavingsufferedB.SufferingC.TosufferD.Suffered
9.Havingatripabroadiscertainlygoodfortheoldcouple,butitremains________whethertheywillenjoyit.
A.toseeB.tobeseenC.seeingD.seen
10.Theresearchissodesignedthatonce________nothingcanbedonetochangeit.
A.beginsB.havingbegunC.beginningD.begun
311.ItissaidthatinAustraliathereismorelandthanthegovernmentknows________.
A.itwhattodowithB.whattodoitwith
C.whattodowithitD.todowhatwithit
12.Acookwillbeimmediatelyfiredifheisfound________inthekitchen.
A.smokeB.smokingC.tosmokeD.smoked
13.I’mgoingtothesupermarketthisafternoon.Doyouhaveanything________?
A.tobebuyingB.tobuyC.forbuyingD.bought
14.Thepilotaskedallthepassengersonboardtoremain________astheplanewasmakingalanding.
A.seatB.seatingC.seatedD.tobeseating
15.Victorapologizedfor________toinformmeofthechangeintheplan.
A.hisbeingnotableB.himnottobeable
C.hisnotbeingableD.himtobenotable
