《条件状语从句》PPT课件.ppt

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1、Revision,Adverbial Clause of Condition条件状语从句,If you are happy,If you are happy and you know it clap your hands,If you are happy and you know it clap your hands,If you are happy and you know it never be afraid to show it,If you are happy and you know it clap your hands,If you are happy and you know i

2、t stomp your 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 it,If you are happy and you know it stomp your feet,If you are happy and you know it wink your eye,If you are happy and you know it wink your eye,If you are happy and you kno

3、w it never be afraid to show it,If you are happy and you know it wink your eye,If 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 are hard-working,you will get good grades.,She gets good gra

4、des.,If you play computer games on weekdays,youll be very tired in class,your parents will be sad.,you wont get good grades.,your eyes will be poor,She will be late.,If she _ to school,she _ _late.,She is going to walk to school.,walks,will,be,Lead-in,位置：从句可放在主句之前或之后，但是放在主句之前须有逗号隔开,eg:如果我有足够的钱，我就去环游

5、世界,If 引导条件状语从句,定义：if“如果,假如”它引导的句子表示某事发生所需的条件，即“在条件下，某事才能发生”，在句子中充当状语，因此称之为条件状语从句。（If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）,If I have enough money,I will travel around the world=I will travel around the world if I have enough money,If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。主句一般将来时，从句用一般现在时。,用法：1.如果主句是一般将

6、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 you dont want to go alone（从句）.2.如果主句含有must,may,can 等情态动词，从句也要用一般现在时。If you drive too fast,you may have an accident.You must stop if the traffic is red.If you finish the homework，you can go home 如果你作业做完了就可以回家了。If you want to lose wei

7、ght you must/should eat less bread.如果你想减肥，你必须少吃面包。,3.如果主句是祈使句，从句同样要用一般现在时。Dont go and play football if you dont finish your homework.Please call me if he comes next Sunday.,1.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 you dont want to go alone（从句）.2.如果主句含有must,may,ca

8、n 等情态动词，从句也要用一般现在时。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。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,Revision,练一练：1。如果她早点儿起床，就有时间在家里吃早餐 If she_ _a little earlier,s

9、hell 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.,gets up,join will have,rains wont go,listen to will like,1.If he_(not,do it),I_(do)it.,

10、2.If you _(be)late for school,my teacher _(be)angry.,are,will be,3 If she_(win)the prize,we _(be)happy.,wins,will be,4.If I _(not,eat)so much,I _(get)thinner.,5.If you _(tell)them,they _(not,believe)you.,dont eat,will get,tell,wont believe,6 I _(stay)at home,If it _(rain).,7.If it _(not,rain),I _(go

11、)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 stay,rains,doesnt rain,will go,will play,sunny,becomes,wont send,will watch,is,doesnt do,will do,2.Youmay _(pass)theexamifyou_(study)hard.,rains,will stay,pass,

12、study,3.If you want to record,_(press)the red light.,press,1.If It_(rain)tomorrow,I _(stay)at home.,Fill in the blankets with the proper form,1.Im sure if he _(go)to the party,he_(have)a great time.2.If the rain _(stop)tonight,we will go to the cinema.3.Ill buy a computer if I _(have)enough money.4.

13、You _(not get)nervous if you _(do)enough exercise.6.I want to know if he _(come)tomorrow,if he _(come),I _(give)the massage to him.,goes,will have,stops,have,wont get,do,comes,will come,will give,If Im ill,_.,I will see a doctor,Look and say,If Im late,_.,I will say sorry,If Im hungry,I will_.,If Im

14、 tired,I will_.,Look and say,eat some food,have a rest,If it rains tomorrow,I_.,will watch TV at home,If it _ tomorrow,_.,Ill play basketball,doesnt rain,I wont_.,play basketball,If you are free this weekend,what will you do?,If I am free,sleepwatch TVplay computer games,practice,If you want to get

15、good marks,do what?Dont do what?,If you want to get good marks,_.If you want to get good marks,dont _.,study hard listen to teachers carefully.do homework by yourself.,copy your homework.talk in the class cheat in the exams,If you have enough pocket money,what will you buy?,If I have enough pocket m

16、oney,I _.,If you invite foreigners to China,where will you go?,I will go to _,if I invite foreigners to China.,Mount Tai,West lake,Hainan,Game Rules,Topic 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.

17、D:If I spend much money,E:.【比一比】：一分钟内，根据所给话题，看同学们能接出多少条件状语从句。【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。,If 条件句的替代形式：（1）祈使句+and/or+陈述句（谓语动词通常用将来时态）。其中，and表示句意顺承；or表示转折，意为“否则”。e.g.If you work hard,youll pass the exam easily.=Work hard,and youll pass the exam easily.If you dont work hard,youll fall behin

18、d others.=Work hard,or youll fall behind others.,very good,（2）用介词with,without的替代形式：e.g.If there is no water,the fish may die.=Fish may die without water.If you help me,Ill finish my task on time.=With your help,Ill finish my task on time.,Activity 1 Rewrite the sentences with if:,Listen in class,or

19、you wont understand what to do.,If you dont listen in class,you wont understand what to do.,1)Eat breakfast,or youll get hungry at school.2)Hurry up!Well be late!,If you dont eat breakfast,youll get hungry at school.,If you dont hurry up,well be late.,Activity2.Complete the sentences,I want to get h

20、igh scores.If _(work hard/do well),you work hard,you will do well.,1.-how can I remember my friends birthdays?-If_(keep a note in your diary/not forget).2.-Its late,but I dont want to go to sleep.-If _(not get enough sleep/feel tired at school).,you keep a note in your diary,you wont forget.,you don

21、t get enough sleep,youll feel tired at school.,If 在宾语从句中翻译为“是否”If 在条件状语从句中翻译为“如果”,Ill go to see you if I am free next week.,I want to know if he is a teacher.,whether,1.if 在句中的含义不同,2.if 在从句中的位置不同,If 引导的宾语从句放在主句之后；而if引导的状语从句可放在主句之前也可放在主句之后,=If it doesnt rain,I will go out tomorrow.,I will go out tomo

22、rrow if it doesnt rain.,I dont know if the train has arrived.,If 引导的条件状语从句放于句首时多用逗号隔开；而if引导的宾语从句则不能。,3.时态要求上有区别,If 引导条件状语从句的时态为一般现在时 记住“主将从现”,1.I want to know if there a sports meeting next month.,doesnt rain,will be,2.If it doesnt rain,well go out,If 引导的宾语从句的时态由主句及本身时态决定；,1.Can you tell me if she c

23、an come to the meeting?2.She will not go there if it is rainy tomorrow.3.I cant guess if she will be angry.4.If we help each other,we will get good results.,1 If I _(not understand）,I will ask my teacher for help.If I _(copy)your homework,I will cheat myself.3 If she _(not get)up early,shell miss th

24、e early bus.4 If your mother_(buy)the book for you,it will be good for your study.,dont understand,copy,doesnt get,buys,5.If you _(not work)hard,you _(not pass)the exam.6.If your brother _(break)the window,he will feel very sorry for that.7.If the computer(not work),mend it please.,dont work,wont pa

25、ss,breaks,doesnt work,8.If she _(not be)interested in math,she will find it very boring.9.If you _(get)high scores,your parents will be proud of you.10.If you _(be)happy,we will be happy.,isnt,get,are,.I want to know if he _(come)tomorrow,if he _(come),I _(give)the message to him.,comes,will come,wi

26、ll give,summary,if的用法,2.引导条件状语从句：译为“如果，假如”(1)if从句+祈使句(2)if从句+主句（一般将来时）(3)if从句+主句（含有情态动词）,1.引导宾语从句：译为“是否”，表示不确定的概念。,I dont know if your father can come together.Can you tell me if miss your parents?,Homework,Writing：任选一个话题，写一篇小文章。要求：不少于字数60词；尽可能多地用条件状语从句来表达。,If you are happy,If you are happy and you

27、know it clap your hands,If you are happy and you know it clap your hands,If you are happy and you know it never be afraid to show it,If you are happy and you know it clap your hands,If you are happy and you know it stomp your feet.,If you are happy and you know it stomp your feet.,If you are happy a

28、nd you know it never be afraid to show it,If you are happy and you know it stomp your feet,If you are happy and you know it wink your eye,If you are happy and you know it wink your eye,If you are happy and you know it never be afraid to show it,If you are happy and you know it wink your eye,1.If you

29、 _ to the party,youll have a great time.A.will go B.went C.go D.going2 I _ her the answer if she _me.A.can tell,will ask B.will tell,will ask C.would tell,ask D.will tell,asks,C,D,3.What are you going to do tomorrow?-Well go to the library tomorrow if it _.A.isnt rain B.rain C.wont rain D.doesnt rai

30、n4.What will you do if you _ to the old folks home visit?A.go B.went C.going D.will go,A,D,5.If I eat _ food,Ill be very fat.A.too many B.many too C.too much D.much too6.Ill give the book to him if he _ here next Sunday.A.will come B.comes C.is coming D.came,7.There _an English film in our school tomorrow.A.is going to have B.will have C.is going to be D.has8.Could you tell us where _？A.will the next Olympic Games held B.the next Olympic Games will be held C.would the next Olympic Games be held D.the next Olympic Games would be held,C,C,B,B,Thanks for listening.Goodbye.,