if條件狀語市公開課金獎市賽課一等獎課件

1、If 引導條件狀語從句 第1頁一、定義二、詳細使用方法三、練習四、拓展五、總結目錄：第2頁定義：if “假如, 假如” 它引導句子表示某事發(fā)生所需條件，即“在條件下，某事才能發(fā)生”，在句子中充當狀語，所以稱之為條件狀語從句。（ If引導條件狀語從句表示假如有從句動作發(fā)生，就會有主句動作發(fā)生 ）一、什么是條件狀語從句？第3頁位置：從句可放在主句之前或之后，不過放在主句之前須有逗號隔開eg:假如我有足夠錢，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.從句主句第4頁二、條件狀語從句使用方法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(樂隊), you will be famous.Lets look at some sentences first第5頁使用方法1：If條件句：條件句用于陳說語氣，表示未來可能性，能力， 允諾，命令，要求，請求，提議

3、時，假設情況可能發(fā)生，其中 if 是“假如，假如”意思。主句普通未來時 ，從句用普通現(xiàn)在時。“主將從現(xiàn)”標準。 構成條件從句主句時態(tài)If普通現(xiàn)在時主語shall/will+動詞原形例句If he comes,he will take us to the zoo.第6頁 使用方法2： 假如主句含有must, may, can 等情態(tài)動詞，從句也要用 普通現(xiàn)在時。 You must stop if the traffic is red. 假如是紅燈，你必需停下來。 If you finish the homework， you can go home 假如你作業(yè)做完了就能夠回家了。 If you

4、want to lose weight, you must/should eat less bread. 假如你想減肥，你必須少吃面包。第7頁使用方法3： 假如主句是祈使句，從句一樣要用普通現(xiàn)在時。Dont go and play football if you dont finish your homework.假如沒有完成家庭作業(yè)，就不要去踢足球。Please call me if he comes next Sunday.假如他下周日來話，請打電話給我。第8頁使用方法4：表示科學常識、事實、 經常性動作或傾向 自動會發(fā)生事If 從句 （普通現(xiàn)在時），主句 （ 普通現(xiàn)在時 ）。1.If w

5、ater is heated, it turns to steam. 假如水加熱，就會蒸發(fā)。2. If people dont get enough sleep, their thinking ability is reduced .假如人們睡眠不足，他們思維能力就會下降。3. If I need a haircut, I usually go to the barbers near my house.假如我要剪頭發(fā)，我通常是去附近那一家剪發(fā)店。4. People often dont go out on Sundays if it rains.假如周日下雨話，人們普通不出門。第9頁三、練一練

6、：1。假如她早點兒起床，就有時間在家里吃早餐 If she_ _a little earlier, shell have time to eat breakfast at home.2。假如你參加聚會，你將會過得很開心。If you_ the party ,you_ _ a great time.3。假如明天下雨，我們將不去野餐If it _tomorrow, we _ _ for a picnic.4。假如你經常聽英文歌，你將會喜歡英語If you often _ _English songs, you_ _English.gets upjoin will haverains wont go

7、listen to will like第10頁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用所給單詞正確形式填空：第11頁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頁四、拓展除了if之外，是否還有其它連詞能夠引導條件狀語從句呢？ 最常見還有：so/as long as只要 unless除非，若不第13頁1. as ( so ) long as. “只要， 就 ” 表示 一個前提條件Youll succeed as (so ) long as ( if only ) you try hard.只要你努力，你就會成功。As long as you are happy, it doesnt matter what you do.只要你高興，你做什么都沒相關系You may borrow my books as long as

10、you keep it clean.只要你保持書清潔，你就能夠借我書。第14頁2unless 除非；若不；假如不；除非在時候 You will fail to arrive there in time unless you start earlier假如你不早點動身，你就不能及時趕到那兒。 Unless bad weather stops me，I go for a walk every morning除非天氣不好，我天天早晨都要去散步。 I wont loan you unless you are in extreme need of money若不是你急需用錢，我不會借錢給你。 第15頁中

11、考真題：（安徽）1.If the rain _(stop) tonight, we will go to the cinema.（黑龍江）2.Ill buy a computer if I _(have) enoug money.（內蒙古）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頁分析試題特點及做題思緒：1.考連詞-做題思緒：分析句子-

12、 判斷關系- 選擇正確連詞：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分析試題特點及做題思緒：第17頁 2.Youmay _ (pass)theexamifyou_ (study)hard. 2.考時態(tài)-做題思緒：認字- 判斷語境提供時態(tài)特點-選擇正確時態(tài)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頁If Im ill,_. I will see a doctorLook and sayIf Im late,_.I will say sorry 條件狀語從句在日常生中應用：第19頁If Im hungry,I will_. If Im tired, I will_. Look and sayeat some foodhave a rest第20頁 If it rains tomorrow,I_.will watch TV at homeIf it _ tomorrow,_.Ill play basketballdoesnt rain第21頁 if 條件句不普通, 幾個關鍵點記心間;