条件状语从句.ppt

1、AdverbialClauseofCondition条件状语从句条件状语从句If you are happyIf you are happy and you know it clap your hands If you are happy and you know it clap your handsIf you are happy and you know it never be afraid to show itIf you are happy and you know it clap your handsIf you are happy and you know it stomp you

2、r feet.If you are happy and you know it stomp your feet.If you are happy and you know it never be afraid to show itIf you are happy and you know it stomp your feetIf you are happy and you know it wink your eyeIf you are happy and you know it wink your eyeIf you are happy and you know it never be afr

3、aid to show itIf you are happy and you know it wink your eyeIf you are happy,what will you do?If I am happy,I will smile.If you become sad,what will you do?If I become sad,I will cry.She is doing her homework.If you If you are are hard-working,hard-working,you you willwill get good grades.get good g

4、rades.She gets good grades.If you play computer games on weekdays,youll be very tired in classyour parents will be sad.you wont get good grades.your eyes will be poorShe will be late.If she _ to school,she _ _late.She is going to walk to school.walkswillbe位置：从句可放在主句之前或之后，但是放在主句之前须有从句可放在主句之前或之后，但是放在主

5、句之前须有逗号隔开逗号隔开eg:如果我有足够的钱，我就去环游世界If 引导条件状语从句 定义：定义：if “如果如果,假如假如”它引导的句子表示某事发生所需的它引导的句子表示某事发生所需的条件，即条件，即“在在条件下，某事才能发生条件下，某事才能发生”，在句子中充当状语，在句子中充当状语，因此称之为条件状语从句。（因此称之为条件状语从句。（If引导的条件状语从句表示假引导的条件状语从句表示假如有从句的动作发生，就会有主句动作的发生如有从句的动作发生，就会有主句动作的发生）If I have enough money,I will travel around the world=I will t

6、ravel around the world if I have enough moneyIf条件句：条件句用于陈述语气，表示假设的情况可能发生，其中 if 是“如果”的意思。主句主句一般将来时一般将来时，从句用一般现在时。，从句用一般现在时。构成条件从句主句时态If一般现在时主语shall/will+动词原形例句If he comes,he will take us to the zoo.用法：1.如果主句是一般将来时，从句则用一般现在时。如果主句是一般将来时，从句则用一般现在时。If it rains（从句），I will stay at home.Ill go with you if y

7、ou dont want to go alone（从句）.2.如果主句含有如果主句含有must,may,can等情态动词，从句也要用等情态动词，从句也要用一般现在时。一般现在时。If you drive too fast,you may have an accident.You must stop if the traffic is red.Ifyoufinishthehomework，youcangohome如果你作业做完了就可以回家了。如果你作业做完了就可以回家了。Ifyouwanttoloseweightyoumust/shouldeatlessbread.如果你想减肥，你必须少吃面包。

8、如果你想减肥，你必须少吃面包。3.如果主句是祈使句，从句同样要用一如果主句是祈使句，从句同样要用一般现在时。般现在时。Dontgoandplayfootballifyoudontfinishyourhomework.PleasecallmeifhecomesnextSunday.1.如果主句是一般将来时，从句则用一般现在时。如果主句是一般将来时，从句则用一般现在时。If it rains（从句），（从句），I will stay at home.Ill go with you if you dont want to go alone（从句）（从句）.2.如果主句含有如果主句含有must,may

9、,can等情态动词，从句也要用等情态动词，从句也要用一般现在时。一般现在时。If you drive too fast,you may have an accident.You must stop if the traffic is red.3.如果主句是祈使句，从句同样要用一般现在时。如果主句是祈使句，从句同样要用一般现在时。Dont go and play football if you dont finish your homework.Please call me if he comes next Sunday.if条件状语从句结构及时态条件状语从句结构及时态Revision练一练：1

10、。如果她早点儿起床，就有时间在家里吃早餐 If she_ _a little earlier,shell have time to eat breakfast at home.2。如果你参加聚会，你将会过得很开心。If you_ the party,you_ _ a great time.3。如果明天下雨，我们将不去野餐If it _tomorrow,we _ _ for a picnic.4。如果你经常听英文歌，你将会喜欢英语If you often _ _English songs,you_ _English.getsupjoinwillhaverainswontgolistentowil

11、llike1.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.donteatwillgettellwontbelieve6I_(stay)athome,Ifit_(rain).7.Ifit_(not,rain),I_(go)out.8.we_(

12、play)football,Ifitis_(sun).9.Ifshe_(become)astar,herparents_(not,send)heraway10.He_(watch)TV,ifhe_(be)free.willstayrainsdoesntrainwillgowillplaysunnybecomeswontsendwillwatchisdoesntdowilldo2.Youmay_(pass)theexamifyou_(study)hard.rainswillstaypassstudy3.Ifyouwanttorecord,_(press)theredlight.press1.If

13、It_(rain)tomorrow,I_(stay)athome.Fill in the blankets with the proper form1.Imsureifhe_(go)totheparty,he_(have)agreattime.2.Iftherain_(stop)tonight,wewillgotothecinema.3.IllbuyacomputerifI_(have)enoughmoney.4.You_(notget)nervousifyou_(do)enoughexercise.6.Iwanttoknowifhe_(come)tomorrow,ifhe_(come),I_

14、(give)themassagetohim.goeswillhavestopshavewontgetdocomeswillcomewillgiveIf Im ill,_.IwillseeadoctorLookandsayIf Im late,_.IwillsaysorryIf Im hungry,I will_.If Im tired,I will_.LookandsayeatsomefoodhavearestIf it rains tomorrow,I_.willwatchTVathomeIf it _ tomorrow,_.IllplaybasketballdoesntrainI wont

15、_.playbasketballIfyouarefreethisweekend,whatwillyoudo?IfIamfree,sleepwatchTVplaycomputergamespracticeIfyouwanttogetgoodmarks,dowhat?Dontdowhat?Ifyouwanttogetgoodmarks,_.Ifyouwanttogetgoodmarks,dont_.studyhardlistentoteacherscarefully.dohomeworkbyyourself.copyyourhomework.talkintheclasscheatintheexam

16、sIfyouhaveenoughpocketmoney,whatwillyoubuy?IfIhaveenoughpocketmoney,I_.IfyouinviteforeignerstoChina,wherewillyougo?Iwillgoto_,ifIinviteforeignerstoChina.MountTaiWestlakeHainanGameRulesTopic 1:If I am happy,A:If I am happy,I will go shopping.B:If I go shopping,I can buy some clothes.C:If I can buy some clothes,I will spend much money.D:If I spend much money,E:.【比一比比一比】：一分钟一分钟内，根据所给话题，看同学们能内，根据所给话题，看同学们能接出多少接出多少条件状语从句条件状语从句。【注意注意】在句子接龙时，主句与从句变换时，要注意在句子接龙时，主句与从句变换时，要注意从句时态的变换，从句用一般现在时。从句时态的变换，从句用一般