if條件狀語從句-語法第一頁，編輯于星期六：八點一分。第1頁，共37頁。WhatwillIdoifitissunnythisweekend?sleepplaycomputergamesgoshopping第二頁，編輯于星期六：八點一分。第2頁，共37頁。Part1:If的用法

1.Iwanttoknowifhewillgotoparkwithus.2.Wewillhaveapicnicifitdoesn’train.3.Ifyouboilwater,itbecomes

steam.

4.Ifyoufeeltired,you

must

havearest.賓語從句條件狀語從句第三頁，編輯于星期六：八點一分。第3頁，共37頁。巧計、速記語法1：if作為賓語從句的引導(dǎo)詞，引導(dǎo)賓語從句。（是否）語法2：if（如果）引導(dǎo)的條件狀語從句第四頁，編輯于星期六：八點一分。第4頁，共37頁。賓語從句?if用于賓語從句中原句式引導(dǎo)詞從句語序一般疑問句whether/if改為陳述句語序第五頁，編輯于星期六：八點一分。第5頁，共37頁。由從屬連詞whether,if引導(dǎo)的賓語從句e.g.1.Iwanttoknow__________________________________.

（他是否跟我們一起去公園）2.Askhim_____________________.（他是否能來）3.Ididn’tknow___________________________.（是否要下雨）

if(whether)hewillgototheparkwithus

whether(if)hecancome

whetheritwasgoingtorainornot當句末為ornot時，引導(dǎo)詞只能用whether而不能用if.第六頁，編輯于星期六：八點一分。第6頁，共37頁。If與whether的區(qū)別Idon’tknow_____hewillcomeornot.Idon’tcareof______heishandsome.Hewondered______tostayherethenextweek.____hewillcomeisnotdecided.與ornot連用只能用whether介詞后只能用whether與todo不定式連用只能用whether作主語只能用whether第七頁，編輯于星期六：八點一分。第7頁，共37頁。If引導(dǎo)條件狀語從句

第八頁，編輯于星期六：八點一分。第8頁，共37頁。Completethesentenceswiththecorrectformofthewords.1.Ifyou_______(listen)tothemusic,_____(buy)aCD.2.Ifhe______(be)lateforschool,______(notwait)forhim.3.Ifyou____(buy)anewcamera,____(get)agoodone.4.Ifthelight____________(notcome)on,____(wait)foroneminute.isbuygetdoesn’tcomewaitdon’twaitlistenbuyRevision第九頁，編輯于星期六：八點一分。第9頁，共37頁。Revision祈使句+if條件狀語從句if條件狀語從句，+祈使句（從句后加逗號）if條件狀語從句要用一般現(xiàn)在時。句型結(jié)構(gòu)時態(tài)If條件狀語從句（1）第十頁，編輯于星期六：八點一分。第10頁，共37頁。Whatwillyoudoifyou’rehappy?IfI’mhappy,Iwill____________.IfI’mhappy,Iwill____________.IfI’mhappy,Iwill____________.IfI’mhappy,Iwill______________.clapmyhandsstampmyfeetwinkmyeyesnodmyhead第十一頁，編輯于星期六：八點一分。第11頁，共37頁。IfI’mhungry,Iwill______________.IfI’m

tired,Iwill_____________.Lookandsayeatsomefoodhavearest第十二頁，編輯于星期六：八點一分。第12頁，共37頁。IfI’mill,__________________.

IwillseeadoctorLookandsayIfI’mlate,_________________.Iwillsaysorry第十三頁，編輯于星期六：八點一分。第13頁，共37頁。

Ifitrainstomorrow,I_____________________.willwatchTVathomeIfit_____________tomorrow,________________.I’llplaybasketballdoesn’trainIwon’t________________.playbasketball第十四頁，編輯于星期六：八點一分。第14頁，共37頁。Ifitissunnythisweekend,

whatwillyoudo?Ifitissunnythisweekend,I__________footballwithmyclassmates.Ifitissunnythisweekend,I__________.willplay第十五頁，編輯于星期六：八點一分。第15頁，共37頁。Ifitissunnythisweekend,

whatwon’tyoudo?Ifitissunnythisweekend,I_____________________.Ifitissunnythisweekend,I_____________________.Won’tstayathomewon’twatchtelevision第十六頁，編輯于星期六：八點一分。第16頁，共37頁。Ifyouarefreethisweekend,whatwillyoudo?IfIamfree,…sleepwatchTVplaycomputergamespractice第十七頁，編輯于星期六：八點一分。第17頁，共37頁。grammarif條件狀語從句(2)句子特點：1.if從句中用一般現(xiàn)在時，表示未來的一種條件，從句中可以加時間狀語。2.當if表示未來的條件時，主句中用一般將來時。句型結(jié)構(gòu)：主句+if條件狀語從句if條件狀語從句，+主句（從句后加逗號）3.時態(tài)：if一般現(xiàn)在時，+主句一般將來時或（can/may/must+v.)第十八頁，編輯于星期六：八點一分。第18頁，共37頁。If條件句：條件句用于陳述語氣，表示假設(shè)的情況可能發(fā)生，其中if是“如果”的意思。構(gòu)成條件從句主句時態(tài)If＋一般現(xiàn)在時主語＋shall/will+動詞原形例句Ifhecomes,hewilltakeustothezoo.第十九頁，編輯于星期六：八點一分。第19頁，共37頁。用法：1.如果主句是一般將來時，從句則用一般現(xiàn)在時。

Ifitrains（從句），Iwillstayathome.I’llgowithyouifyoudon’twanttogoalone（從句）.

2.如果主句含有must,may,can等情態(tài)動詞，從句也要用一般現(xiàn)在時。

Ifyoudrivetoofast,youmayhaveanaccident.Youmuststopifthetrafficisred.3.如果主句是祈使句，從句同樣要用一般現(xiàn)在時。

Don’tgoandplayfootballifyoudon’tfinishyourhomework.

PleasecallmeifhecomesnextSunday.第二十頁，編輯于星期六：八點一分。第20頁，共37頁。4.表示假設(shè)，表示將會發(fā)生和可能發(fā)生的事，或進行提醒警告。If+句子（一般現(xiàn)在時），+主句（主語will/may/can)+動詞）

Ifyoufinishyourhomework,youcangooutandplay.IfIhaveenoughmoneynextyear,Iwillgototravel.下列從句中的will不是將來時助動詞，而是情態(tài)動詞。翻譯為“愿意”。

Ifyouwillexcuseme,Ireallymustgotobed.如果你能原諒我的話，我真的要睡覺了。

Ifyouwillwaitaminute,I’llgoandtellmymotherthatyouarehere.

如果你愿意等一會的話，我去告訴我媽媽你來了。試比較下列句子：

Ifyouseehimtomorrow,givehimthisbook.

如果你明天去看他，給他這本書。

Ifyouwillseehimtomorrow,givehimthisbook.

如果你明天愿意去看他，給他這本書。第二十一頁，編輯于星期六：八點一分。第21頁，共37頁。if條件句不一般,幾個要點記心間。條件句放在前,逗號要放句中間。條件句表可能,主句多用將來時；條件句表事實,主句常用現(xiàn)在時。if條件句有特點,現(xiàn)在時把將來替；這個規(guī)則要牢記!if條件句歌訣第二十二頁，編輯于星期六：八點一分。第22頁，共37頁。e.g.1.Ifyoudon’tgetupearly,youwillbelateforschool.你如果不早點起床，上學(xué)就會遲到。2.IfIplaygamesonit,itwillgowrong.如果我用它玩游戲，它就會壞掉。3.Ifyoufinishthehomework，youcangohome．如果你作業(yè)做完了就可以回家了。4.Ifyouwanttoloseweightyoumust/shouldeatlessbread.如果你想減肥，你必須少吃面包。5.Ifyouheaticeitturnstowater.(也可用willturn)如果把冰加熱，它就會化成水。第二十三頁，編輯于星期六：八點一分。第23頁，共37頁。1.Ifhe____________(not,doit),I___________(do)it.2.Ifyou____(be)lateforschool,myteacher________(be)angry.arewillbe3Ifshe________(win)theprize,we_______(be)happy.winswillbe4.IfI_________(not,eat)somuch,I_________(get)thinner.5.Ifyou______(tell)them,they_____________(not,believe)you.don’teatwillgettellwon’tbelieve6I_________(stay)athome,Ifit__________(rain).7.Ifit____________(not,rain),I_________(go)out.8.we__________(play)football,Ifitis_________(sun).9.Ifshe__________(become)astar,herparents____________(not,send)heraway

10.He_________(watch)TV,ifhe______(be)free.willstayrainsdoesn’trainwillgowillplaysunnybecomeswon’tsendwillwatchisdoesn’tdowilldoExerciseTime第二十四頁，編輯于星期六：八點一分。第24頁，共37頁。()5.─Mikewantstoknowif____apicnictomorrow.─Yes.Butifit_______,we'llvisitthemuseuminstead.A.youhave/willrain

B.youwillhave/willrainC.youwillhave/rains

D.willyouhave/rains()6.Ireallydon'tknowifshe_______itwhenshe________.A.finds/arrives

B.finds/willarrive

C.willfind/willarrive

D.willfind/arrives

（）4.Thevolleyballmatchwillbeputoff(推遲）ifit______.A.willrainB.rainsC.rainedD.israining（）1.Becareful,ifyou______wanttomakemistakes.A.won’tB.don’tC.didn’tD.not（）2.Workhardifyou______togetagoodmark.A.wantedB.wantingC.wantD.willwant（）3.--Iwanttoknowifyou______tothepartytomorrow.--IwillifI_____free.A.willcome;amB.come;amC.willcome;willbeD.come;willbeexercisesBCABCD第二十五頁，編輯于星期六：八點一分。第25頁，共37頁。---I’malwaystiredinthemorning.---Ifyougotobedearly,youwon’tbetiredinthemorning.Givingsuggestions:第二十六頁，編輯于星期六：八點一分。第26頁，共37頁。---IgetthirstywhenIrun.---Ifyoutakesomewaterwithyou,youwon’tgetthirstywhenyourun.第二十七頁，編輯于星期六：八點一分。第27頁，共37頁。Iworrysomuchaboutmyschoolwork.---Ifyoualways

workhard,youwon’tworryaboutyourschoolwork.Youshould

workhard!第二十八頁，編輯于星期六：八點一分。第28頁，共37頁。Unit3activity1Rewritethesentenceswithif:Listeninclass,oryouwon’tunderstandwhattodo.Ifyoudon’t

listeninclass,youwon’tunderstandwhattodo.1)Eatsomebreakfast,oryou’llgethungryatschool.2)Hurryup!We’llbelate!3)Readtheinstructionscarefully.Thenyou’llknowwhattodo.Ifyoudon’teatsomebreakfast,you’llgethungryatschool.Ifyoudon’thurryup,we’llbelate.Ifyoureadtheinstructionscarefully,you’llknowwhattodo.第二十九頁，編輯于星期六：八點一分。第29頁，共37頁。Activity2.Completethesentences—Iwanttogethighscores.—If__________________________(workhard/dowell)youworkhard,youwilldowell.1.-howcanIremembermyfriends’birthdays?-If_______________________________________(keepanoteinyourdiary/notforget).2.-It’slate,butIdon’twanttogotosleep.-If_______________________________________(notgetenoughsleep/feeltiredatschool).youkeepanoteinyourdiary,youwon’tforget.youdon’tgetenoughsleep,you’llfeeltiredatschool.第三十頁，編輯于星期六：八點一分。第30頁，共37頁。3.-Idon’tlikespeakingEnglishoutsidetheclassroom.-If_______________________________________(notpractice/notimprove).4.-ShouldItellmyteacherIdon’tunderstandthehomework?-If_______________________________________(nottellher/shenotabletohelpyou).5.-IsitOKifIwatchTVforsixhours?-If____