If引導(dǎo)的條件狀語從句課件

If引導(dǎo)的條件狀語從句大慶市第51中學(xué)賀東輝If在狀語從句中的位置If引導(dǎo)的條件狀語從句，如下列的例子：Ifyouknowtheanswer,pleasetellme.Iftheycomehere,wewillpickthemup.ShewillsendmeanemailifInoticeher.*由此可以看出，if引導(dǎo)的句子放在句首，后面的句子連接中用“，”

.如果放在句子當(dāng)中，兩個(gè)連接的句子不需要加“，”.eg:1)如果你看見Tom,請(qǐng)立刻通知我。2)如果比賽結(jié)束了，請(qǐng)給我打電話。1)IfyouseeTom,pleasenoticemeatonce.1)PleasenoticemeatonceifyouseeTom.2)Ifthegameisover,pleasecallme.2)Pleasecallmeifthegameisover.exercise：句子改寫WewillgotoHarbinifitisfinetomorrow.

*Ifitisfinetomorrow,wewillgotoHarbin2)Ifhehasthebook,pleaseletmeknow.*Pleaseletmeknowifhehasthebook.3)Iftheycomehere,wewillbehappy.*

Wewillbehappyiftheycomehere4)Katewillwatchamovieifsheisfree.*IfKateisfree,shewillwatchamovie.*question:if在狀語從句中的位置是怎樣的呢主從句的區(qū)分Eg:Iwillbringanumbrellaifitrainsoutside.Ifthecarisred,Iwillbuytwo.Ifthegroundisdry,wewillplayfootballthisafternoon.*上述句子中，我們把if后面引導(dǎo)的句子叫做從句，句子的另外一部分叫做主句。If叫引導(dǎo)詞。判斷下列句子中的主句和從句Ifyouhaveenoughmoney,wewillbuyacar.IfKateisangry,Tomwillbeveryscared.Wewilllaughathimifhegetspoorscore.Pleasegohomeifyouhaveanyproblem.Turnleftifyouseetheredstone.*1)從+主2）從+主3）主+從4）主+從

5）主+從

Question:if引導(dǎo)的句子叫什么？另外一部分叫什么？If引導(dǎo)的條件狀語從句1IfyouseeTom,pleasetellhimthenews.IfIcan’tgothere,pleasechooseanotherone.Handinyourpaper

iftimeisup.Gobackrightnow

ifyoufeeltired.Question:這幾個(gè)if引導(dǎo)的條件狀語從句有什么特點(diǎn)？If引導(dǎo)的狀語從句之祈使句上述的例子概況為

If+從句+主句（祈使句）或者

主句（祈使句）+if+從句即：在主句和從句都是一般現(xiàn)在時(shí)態(tài)的情況下，主句用祈使句，從句用一般現(xiàn)在時(shí)。Eg:Passmetherulerifyouarefree.Ifthecarischeap,buyme2.ChoosethebestanswerIfMary____(want)toeatsth,_____(give)heratonce.A.want,giveB.wants,giveC.wants,givesD.want,gives2.IfTony___(have)time,____(go)shoppingwithhim.A.have,goB.has,goC.has,goesD.have,goes3.__(remember)allthewordsifhe___(find)thebook.A.Remember,findB.Remembers,findsC.Remembers,findD.Remember,findsFillintheblankIfIcan’t____(get)upontime,_____(call)meplease.IfKate______(be)singing,_____(notice)hertogetdownatonce.Ifshe_____(know)theanswer,_____(copy)meone.______(cut)thewatermelonifalltheguests______(be)ready.______(turn)offthelightifshe____(go)out.getcallisnoticeknowscopyCutareTurngoesIf引導(dǎo)的狀語從句之主將從現(xiàn)

看下面的句子,Ifyoucancomehere,

bringmeabook.

表示的是一種可能的情況。在這個(gè)句子中，主句用祈使句，從句用一般現(xiàn)在時(shí)態(tài)?？墒侨绻渥诱f，“如果你不能來，我會(huì)自己去取”，該怎么表達(dá)呢？*Ifyoucan’tcomehere,Iwillbringitmyself.

像這種從句用一般現(xiàn)在時(shí)，主句用將來時(shí)態(tài)的句子，就是if引導(dǎo)的第二種條件狀語的情況，簡(jiǎn)稱“主將從現(xiàn)”。Eg:Ifyoutellmethetruth,Iwillbecrazy.Ifshecomeshere,Iwillhavelunchwithher.Wewilltakeyouhomeifourcarisworking.Hewillsmokeifthereisnobody.Choosethebestanswer.IfMary____(fly)toShanghai,she____(see)myuncle.A.fly，willseeB.flies,willseeC.willfly,sees,D.flies,see2.IfTom____(open)thebox,father____(be)angry.A.opens,willbeB.willopen,beC.opens,isD.willopen,willbe3.Daming____(cook)themealhimselfifmum____(be)notathome.cook,isB.willcook,willbeC.willcook,isD.cook,willbeFillintheblankIfI_______(see)them,I_______(tell)themtheresult.Ifit________(snow),we_______(go)skating.Tony_______(play)footballifit_______(be)notcold.We_______(get)thefirstplaceifnobody________(catch)us.They__________(win)ifthegame________(be)over.Question:什么叫“主將從現(xiàn)”？seewilltellsnowswillgowillplayiswillgetcatcheswillwinis主將從現(xiàn)練習(xí)IfI____(have)enoughmoney,I_____(buy)anicecar.A.have,buyB.willhave,willbuyC.willhave,buy.D.have,willbuy.Ifshe_____(read)thenotice,she______(notmake)themistake.A.read,doesn’tmakeB.willread,won’tmakeC.willread,won’tmakeD.reads,won’tmakeMary_____(notgo)thereifnobody_____(tell)hertheaddress.A.doesn’tgo,tells.B.won’tgo,tellsC.doesn’tgo,willtellD.won’tgo,tell改錯(cuò)Iftheyknowtheanswer,theytellmehowtodo.Iwillcookmyselfifshewillgoout.WewillflytoShanghaiifthedaywasfine.Mikewillgohomeifthereisnothomework.Shecopiesitagainifthebossgoesback.Davidwilleatalotofwatermelonsifhefeelhungry.

1.willtell2.goes3.is4.no5.willcopy6.feelstranslation如果你看到Tom，你就會(huì)知道真相了。如果有人跟我撒謊，我就揍他。如果你飛到月球上，你就會(huì)看到藍(lán)色的地球。如果你在倫敦，你就會(huì)看奧運(yùn)會(huì)了。如果你能早點(diǎn)到，我們就不會(huì)錯(cuò)過