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1、If引導(dǎo)的條件狀語從句引導(dǎo)的條件狀語從句If you re happy and you know it Clap Your handsIf you re happy and you know it Clap your handsIf you re happy and you know itNever be afraid to show itIf you re happy and you know it Clap your handsIf you re happy and you know it Stomp your feetIf you re happy and you know it Sto

2、mp your feetIf you re happy and you know itNever be afraid to show itIf you re happy and you know it Stomp your feetIf you re happy and you know it Wink your okIf you re happy and you know it Wink your okIf you re happy and you know itNever be afriad to show itIf you re happy and you know it Wink yo

3、ur ok1什么是狀語？什么是狀語？He speaks English very well.You are very beautiful.（動(dòng)詞動(dòng)詞）（形容詞形容詞）（程度副詞程度副詞）主語謂語賓語狀語2 用來修飾用來修飾動(dòng)詞動(dòng)詞，形容詞形容詞，副詞副詞以及全句的句子成分，叫做以及全句的句子成分，叫做狀語狀語。用作狀語的通常是用作狀語的通常是副詞副詞，介詞短介詞短語語，不定式不定式和和從句從句等。等。3狀語從句u在復(fù)合句中表示的狀語在復(fù)合句中表示的狀語u可以用來修飾謂語（包括非謂語可以用來修飾謂語（包括非謂語動(dòng)詞）、定語、狀語或整個(gè)句子。動(dòng)詞）、定語、狀語或整個(gè)句子。4狀語從句狀語從句 分類分

4、類5位置位置：從句從句可放在可放在主句主句之之前前或之或之后后，但是放在，但是放在主句之主句之前前須有須有逗號(hào)隔開逗號(hào)隔開eg:如果我有足夠的錢，我就去環(huán)游世界。如果我有足夠的錢，我就去環(huán)游世界。If 引導(dǎo)條件狀語從句 定義定義：If“如果如果,假如假如”它引導(dǎo)的句子它引導(dǎo)的句子表示某事發(fā)生所需的表示某事發(fā)生所需的條件，即條件，即“在在條件下，某事才能發(fā)生條件下，某事才能發(fā)生”，在句子中充當(dāng)狀語，在句子中充當(dāng)狀語，因此稱之為條件狀語從句因此稱之為條件狀語從句。（。（If引導(dǎo)的條件狀語從句表示假引導(dǎo)的條件狀語從句表示假如有從句的動(dòng)作發(fā)生，就會(huì)有主句動(dòng)作的發(fā)生如有從句的動(dòng)作發(fā)生，就會(huì)有主句動(dòng)作的發(fā)

5、生）If I have enough money,I will travel around the world.=I will travel around the world if I have enough money.6If條件句：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，條件句用于陳述語氣，表示假設(shè)的情況可能發(fā)生，其中其中if是是“如果如果”的意思。的意思。主句主句一般將來時(shí)一般將來時(shí)，從句用一般現(xiàn)在時(shí)。，從句用一般現(xiàn)在時(shí)。構(gòu)構(gòu)成成條件從句條件從句主句主句時(shí)時(shí)態(tài)態(tài)If一般現(xiàn)在時(shí)一般現(xiàn)在時(shí)主語主語shall/will+動(dòng)詞原形動(dòng)詞原形例例句句Ifhecomes,hewilltak

6、eustothezoo.71.如果主句是一般將來時(shí)，從句則用一般現(xiàn)在時(shí)。如果主句是一般將來時(shí)，從句則用一般現(xiàn)在時(shí)。Ifitrains（從句），（從句），Iwillstayathome.Illgowithyouifyoudontwanttogoalone（從句）（從句）.2.如果主句含有如果主句含有must,may,can等情態(tài)動(dòng)詞，從句也要用等情態(tài)動(dòng)詞，從句也要用一般現(xiàn)在時(shí)。一般現(xiàn)在時(shí)。If you drive too fast,you may have an accident.You must stop if the traffic is red.If you finish the home

7、work，you can go home如果你作業(yè)做完了就可以回家了。如果你作業(yè)做完了就可以回家了。If you want to lose weight you must/should eat less bread.如果你想減肥，你必須少吃面包。如果你想減肥，你必須少吃面包。83.3.如果主句是如果主句是祈使句祈使句，從句同樣要用一般現(xiàn)在時(shí)。，從句同樣要用一般現(xiàn)在時(shí)。Dont go and play football if you dont finish your homework.Please call me if he comes next Sunday.9If 引導(dǎo)的條件狀語從句的基本用

8、法引導(dǎo)的條件狀語從句的基本用法:主主 句句從從 句句一般將來時(shí)一般將來時(shí)一般現(xiàn)在時(shí)一般現(xiàn)在時(shí)祈使句祈使句一般現(xiàn)在時(shí)一般現(xiàn)在時(shí)含情態(tài)動(dòng)詞含情態(tài)動(dòng)詞一般現(xiàn)在時(shí)一般現(xiàn)在時(shí) 10Summary:ifif 引導(dǎo)的條件狀語從句引導(dǎo)的條件狀語從句，如果如果主句主句是是_,那if引導(dǎo)的從句用_表示將來可能發(fā)生的動(dòng)作或存在的狀態(tài)，也就是所謂的_主將從現(xiàn)主將從現(xiàn)一般將來時(shí)一般將來時(shí)一般現(xiàn)在時(shí)一般現(xiàn)在時(shí)11把下列句子組成主將從現(xiàn)的句子把下列句子組成主將從現(xiàn)的句子If If she,call meshe,call mewillI,tell her about itIf she calls me,I will tell

9、 her about it.12IfIfit,not rainit,not rainwillwillgo hiking,this go hiking,this afternoonafternoonIf it doesnt rain,I will go hiking this afternoon13IfIfshe,not exercise enoughshe,not exercise enoughWill Will heavierheavierIf she doesnt exercise enough,she will be heavier14IfIfI,happyI,happywillwill

10、I,go shoppingI,go shoppingIf I am happy,I will go shopping15IfIfshe,study hardshe,study hardwillwillget good gradesget good gradesIf she studies hard,she will get good grades16If you,eat too muchwillhave a stomachacheIf you eat too much,you will have a stomachahe17Summary:含含if if 條件狀語從句中，如果主句用條件狀語從句

11、中，如果主句用一般將來時(shí)，從句用一般將來時(shí)，從句用_表表將來，將來，_原則原則主將從現(xiàn)主將從現(xiàn)一般現(xiàn)在時(shí)一般現(xiàn)在時(shí)18練習(xí)練習(xí)1.We will go to the park if it _(not rain)2.If you are free,we _(dance)tomorrow3.You _(have)a great time if you go to the party.4.If you _(take)the bus to the party,you _(be)late.5.What _(happen)if they _(have)the party.6.If we _(ask)peo

12、ple to bring food,they _(bring)potato chips7.If she_(get)up late,she _(miss)the bus.8.If Tom _(watch)TV every day,he _(not have)enough time to study.doesnt rainwill dancewill havetakewill bewill happenhaveaskwill bringgetswill misswatchesdoesnt have19練一練：1。如果她早點(diǎn)兒起床，就有時(shí)間在家里吃早餐。如果她早點(diǎn)兒起床，就有時(shí)間在家里吃早餐Ifsh

13、e_alittleearlier,shellhavetimetoeatbreakfastathome.2。如果你參加聚會(huì)，你將會(huì)過得很開心。如果你參加聚會(huì)，你將會(huì)過得很開心。Ifyou_theparty,you_agreattime.3。如果明天下雨，我們將不去野餐。如果明天下雨，我們將不去野餐Ifit_tomorrow,we_forapicnic.4。如果你經(jīng)常聽英文歌，你將會(huì)喜歡英語。如果你經(jīng)常聽英文歌，你將會(huì)喜歡英語Ifyouoften_Englishsongs,you_English.getsupjoinwillhaverainswontgolistentowilllike201.If

14、 he_(not,do it),I_(do)it.2.If you _(be)late for school,my teacher _(be)angry.arewill be3 If she_(win)the prize,we _(be)happy.winswill be4.If I _ (not,eat)so much,I _(get)thinner.5.If you _(tell)them,they _ (not,believe)you.dont eatwill gettellwont believe6 I _(stay)at home,If it _(rain).7.If it _(no

15、t,rain),I _(go)out.8.we _(play)football,If it is _(sun).9.If she _(become)a star,her parents _(not,send)her away 10.He _(watch)TV,if he _(be)free.will stayrainsdoesnt rain will gowill playsunnybecomeswont sendwill watchisdoesnt dowill do211.Imsureifhe_(go)totheparty,he_(have)agreattime.2.Iftherain_(

16、stop)tonight,wewillgotothecinema.3.IllbuyacomputerifI_(have)enoughmoney.4.You_(notget)nervousifyou_(do)enoughexercise.6.Iwanttoknowifhe_(come)tomorrow,ifhe_(come),I_(give)themassagetohim.goeswillhavestopshavewontgetdocomeswillcomewillgive221.I_(record)theCDforyoutomorrow.2.Doessheoften_(lend)moneyto

17、herbrother?3.Thesnake_(notappear)ifyoumakenoise.4.Inthefinalexam,I_(get)goodmarks.willrecordlendwontappearwillget232.Youmay_(pass)theexamifyou_(study)hard.rainswillstaypassstudy3.Ifyouwanttorecord,_(press)theredlight.press1.IfIt_(rain)tomorrow,I_(stay)athome.Fillintheblanketswiththeproperform24用括號(hào)內(nèi)所

18、給詞的正確形式填空用括號(hào)內(nèi)所給詞的正確形式填空1.Iftherain_(stop)tonight,wewillgotothecinema.2.IllbuyacomputerifI_(have)enoughmoney.3.You_(notget)nervousifyou_(do)enoughexercise.4.Ifshe_(be)kindtome,I_(notargue)withher.5.Iwanttoknowifhe_(come)tomorrow,ifhe_(come),I_(give)themassagetohim.stopshavewontgetdoiswontarguewillcomecomeswillgive25IfImill,_.I will see a doctorLook and sayIfImlate,_.I will say sorry 26IfImhungry,Iwill_.IfIm tired,Iwill_.Look and sayeat some foodhave a rest27Ifitrainstomorrow,I_.will watch TV at homeIfit_tomorrow,_.Ill play basketballdoesnt rainIwont_.play basketball28