Unit 10 If you go to the party, youll have a great time! Section B 语法课件：If引导的条件状语从句（22张PPT））.ppt

Ifyoumissmyparty,youwillbesorry.ifclause从句mainclause主句Ifsentencesif引导的条件状语从句

FIRSTSECONDTHIRDZERO

IfIamlateforschool,myteachergetsangry.IfclauseMainclauseIf+PresentsimplePresentsimple

IfIoversleep…

Imissthebus.

IfImissthebus,Iamlateforschool.

IfIamlateforschool,myteachergetsangry.

IfIgotoLondon,IwillseetheBigBen.IfclauseMainclauseIf+Presenttensewill/can/may/must+verb

IfIgotoLondon…

IwillseetheBigBen.

IfIgotoBuckinghamPalace,IcantakeaphotooftheRoyalGuard.

IfyougotoLondon,youmustlookrightbeforecrossingastreet

if引导的条件状语从句

WatchandlearnWhattensesdothesentencesuse?一般现在时一般将来时

Watchandlearn这些句子都表示对事情的结果进行预测。Canyoutelltheconjunction(连词)thatconnectsthetwopartsofthesentences?Whatdoesitmean?

WatchandlearnWhat’sthemeaningofthe“do”here?Ifyoutakethebustotheparty,you’llbelate.Ifyoustayathome,you’llbesorry.

时态：1.如果主句是一般将来时，从句常用一般现在时。即应遵循“主将从现”的原则，Ifshecomestoseemetomorrow,I’llbehappy.Ifitsnowstomorrow,Iwillnotgotothepark.won’t主将从现

2.如果主句含有must/can/may等情态动词，从句一般用___________。Youmuststopifthetrafficlight____(be)red.is一般现在时3.如果主句是祈使句，从句也常用___________。一般现在时Pleasestayathomeifit_____(rain)tomorrow.rains主情从现主祈从现

用if…will造句ifIjoinlions.IwilltravelaroundtheworldIfIhavealotofmoney,Iwillbuyabighouse.

中考预热1.YoucansurftheInternet______youwanttoknowaboutthe2020WorldMiddleSchoolGames.A.UntilB.AfterC.ifD.Unless2.IfI_____atwo-weekholidaynextyear,IwilltakepartinashortstudytourtoBeijingUniversity.A.took???B.take???C.willtake???D.aretakingCBC

()4.Ifit______sunnytomorrow,I____boating.

A.isgoB.willbe,go C.is,willgoD.willbe,willgo

()5.--whatwillyoudoifit______tomorrow,

--I’llstayathomeandw