表原因的常见词有：because,for,since,now,that,becauseof,dueto,owingto,onaccountof,thatiswhy,cause,giveriseto,leadto.
表因果的常见词有：so,sothat,inorderthat,therefore,asaresultof,suchthat.
II条件关系;要注意判断是真实条件句还是虚拟条件句
A.Herroommatestaysawakeallnight.
C.Shewantstoplaythepiano.
D.Thepresentapartmentistooexpensive.
B.Heturnedtoofastatacorner.
D.Hewentthroughazebracross.
A.Shebelievesthemanisjoking.
B.Shewantstoknowwhoistellingthetruth.
C.Shethoughttherewouldn’tbeanyawards.
D.Shefindstheresultunbelievable.
B.Topleasethewomanandhersister.
C.Topleasethewoman’ssister.
D.Topleasetheman’sgirlfriend.
A.Shehasnocomputeratthemoment.
C.Shewilllendthemanhercomputer.
D.Hercomputerhasbrokendown.
A.Hehasfailedthegrammarexam.
B.Hehaspassedthegrammarexam.
C.Histeacherhasn’tofferedhelptohim.
D.HisteacherfeelssorryforhisEnglish.
A.He’sunabletoappearincourt.
B.He’snotsoenthusiasticaboutacademics.
C.Shewisheshecouldbeabetterstudent.
D.Heplaystennisbetterthanothers.
11.
A.Thewomanistalkingwithherboss.
12.
A.Henryagreestogoonpicnictomorrow.
B.Henrydoesn’tenjoygoingonpicnic.
C.Henrywillnotgoonpicnictomorrow.
D.Henryhasnothinginthehousetoeat.
13.
A.Playthemusicmorequietly.
C.Turnthemusicalittlelouder.
D.Paymoreattentiontothemusic.
14.
A.Thewomanshouldn’tbetakingthetraintomorrow.
B.Thewomanshouldseethegameafterward.
C.Thewomanshouldstepoverthevolleyball.
D.Thewomanshouldn’tbeplayingsosoon.
16.
A.Hewaslateforschoolonthefirstday.
C.Hewasthefirstpersonhemetatschool.
D.Helikedtoshowoffinclass.
18.
A.Hewillonlybeavailableintheafternoon.
C.Hedoesn’thavetimerightnow.
D.Heistootiredafterclass.
19.
A.Shorthairlooksfashionable.
B.Shorthairismorecomfortable.
D.Shedoesn’thaveanairconditioner.
20.
A.Hetakesitasakindofexercise.
C.Helovesdoinganythingthatisnew.
21.
A.Thewomanhastroublegettingalongwiththeprofessor.
B.Thewomanregretshavingtakenupmuchoftheprofessor’stime.
C.Thewomanknewtheprofessorhadbeenbusy.
D.Thewomanknowstheprofessorhasrunintotrouble.
22.
A.ThemanisplanningatriptoAtlanta.
B.ThemanhasbeentoAtlantabefore.
C.Themandoesn’tliketovisitAtlanta.
D.ThemanknowsnothingaboutAtlanta.
23.
A.Hegothomebefore9o’clock.
24.
A.ThewomanwouldunderstandifshedidMary’sjob.
B.ThewomanshoulddothetypingforMary.
C.ThewomanshouldworkashardasMary.
D.Maryisn’taskillfultypist.
25.
A.Cleanhishousewhileheisaway.
B.Buyhimsomeplantsandtakecareofthem.
C.Waterhisplantswhileheisaway.
D.Waterhisplantswhensheisnotatwork.
26.
A.Hedoesn’tlikethebooksthewomanbought.
B.Therewasn’talargeselectionatthebookstore.
C.Thewomanboughtalotofbooks.
D.Hethinksthewomanwantstoownthebookstore.
27.
A.Thewomanisaclosefriendoftheman.
B.Thewomanhasbeenworkingtoohard.
C.Thewomanisseeingadoctor.
D.Thewomanistiredofherwork.
28.
A.Hemusthandinareportaboutthemuseum.
B.Hehasalreadyvisitedthemuseum.
C.Heisnotinterestedinherproposal.
D.Heistoobusytogowithher.
29.
A.Sheisunhappywiththeman’spromises.
B.Shebelievesthemanwillkeephispromise.
C.Sheplayedtenniswiththemanyesterday.
D.Sheforgottoplaytenniswiththeman.
