if条件状语市公开课金奖市赛课一等奖课件

1、If 引导条件状语从句 第1页一、定义二、详细使用方法三、练习四、拓展五、总结目录：第2页定义：if “假如, 假如” 它引导句子表示某事发生所需条件，即“在条件下，某事才能发生”，在句子中充当状语，所以称之为条件状语从句。（ If引导条件状语从句表示假如有从句动作发生，就会有主句动作发生 ）一、什么是条件状语从句？第3页位置：从句可放在主句之前或之后，不过放在主句之前须有逗号隔开eg:假如我有足够钱，我就去周游世界If I have enough money, I will travel around the world =I will travel around the world if

2、I have enough moneyIf it rains tomorrow ,I will stay at home.从句主句第4页二、条件状语从句使用方法If I get up late, I will be late for school.If I dont finish my homework, I wont go to bed.If you join the band(乐队), you will be famous.Lets look at some sentences first第5页使用方法1：If条件句：条件句用于陈说语气，表示未来可能性，能力， 允诺，命令，要求，请求，提议

3、时，假设情况可能发生，其中 if 是“假如，假如”意思。主句普通未来时 ，从句用普通现在时。“主将从现”标准。 构成条件从句主句时态If普通现在时主语shall/will+动词原形例句If he comes,he will take us to the zoo.第6页 使用方法2： 假如主句含有must, may, can 等情态动词，从句也要用 普通现在时。 You must stop if the traffic is red. 假如是红灯，你必需停下来。 If you finish the homework， you can go home 假如你作业做完了就能够回家了。 If you

4、want to lose weight, you must/should eat less bread. 假如你想减肥，你必须少吃面包。第7页使用方法3： 假如主句是祈使句，从句一样要用普通现在时。Dont go and play football if you dont finish your homework.假如没有完成家庭作业，就不要去踢足球。Please call me if he comes next Sunday.假如他下周日来话，请打电话给我。第8页使用方法4：表示科学常识、事实、 经常性动作或倾向 自动会发生事If 从句 （普通现在时），主句 （ 普通现在时 ）。1.If w

5、ater is heated, it turns to steam. 假如水加热，就会蒸发。2. If people dont get enough sleep, their thinking ability is reduced .假如人们睡眠不足，他们思维能力就会下降。3. If I need a haircut, I usually go to the barbers near my house.假如我要剪头发，我通常是去附近那一家剪发店。4. People often dont go out on Sundays if it rains.假如周日下雨话，人们普通不出门。第9页三、练一练

6、：1。假如她早点儿起床，就有时间在家里吃早餐 If she_ _a little earlier, shell have time to eat breakfast at home.2。假如你参加聚会，你将会过得很开心。If you_ the party ,you_ _ a great time.3。假如明天下雨，我们将不去野餐If it _tomorrow, we _ _ for a picnic.4。假如你经常听英文歌，你将会喜欢英语If you often _ _English songs, you_ _English.gets upjoin will haverains wont go

7、listen to will like第10页1.If 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 be

8、lievedoesnt dowill do用所给单词正确形式填空：第11页6 I _(stay) at home if it _( rain).7.If it _(not ,rain) ,I _( go) out.8. we _(play) football if it is _(sun) .9.If she _(become) a star ,her parents _ (be) proud of her. 10.He _(watch) TV if he _(be) free.will stayrainsdoesnt rainwill gowill playsunnybecomeswill

9、bewill watchis第12页四、拓展除了if之外，是否还有其它连词能够引导条件状语从句呢？ 最常见还有：so/as long as只要 unless除非，若不第13页1. as ( so ) long as. “只要， 就 ” 表示 一个前提条件Youll succeed as (so ) long as ( if only ) you try hard.只要你努力，你就会成功。As long as you are happy, it doesnt matter what you do.只要你高兴，你做什么都没相关系You may borrow my books as long as

10、you keep it clean.只要你保持书清洁，你就能够借我书。第14页2unless 除非；若不；假如不；除非在时候 You will fail to arrive there in time unless you start earlier假如你不早点动身，你就不能及时赶到那儿。 Unless bad weather stops me，I go for a walk every morning除非天气不好，我天天早晨都要去散步。 I wont loan you unless you are in extreme need of money若不是你急需用钱，我不会借钱给你。 第15页中

11、考真题：（安徽）1.If the rain _(stop) tonight, we will go to the cinema.（黑龙江）2.Ill buy a computer if I _(have) enoug money.（内蒙古）3.You _(not get) nervous if you _(do ) enough exercise. （浙江）4.If she _ (be) kind to me , I _(not argue) with her. stopshave wont getdo iswont argue 第16页分析试题特点及做题思绪：1.考连词-做题思绪：分析句子-

12、 判断关系- 选择正确连词：1.You wont get nervous _you do enough exercise.A.if, B, unless C, whether2. _ you hurry up, you will miss the early bus.A. if, B, unless C, whether分析试题特点及做题思绪：第17页 2.Youmay _ (pass)theexamifyou_ (study)hard. 2.考时态-做题思绪：认字- 判断语境提供时态特点-选择正确时态A. rain ,stay B. rains, stay C. rains, will st

13、ay D. rain ,will stay 1.If It_ (rain) tomorrow, I_(stay) at home.A.pass,study B.will pass ,study C.pass,will study D.passes ,study第18页If Im ill,_. I will see a doctorLook and sayIf Im late,_.I will say sorry 条件状语从句在日常生中应用：第19页If Im hungry,I will_. If Im tired, I will_. Look and sayeat some foodhave a rest第20页 If it rains tomorrow,I_.will watch TV at homeIf it _ tomorrow,_.Ill play basketballdoesnt rain第21页 if 条件句不普通, 几个关键点记心间;