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1、Unit 3 Language in use再識再識if從句從句 在上一模塊我們結(jié)識了在上一模塊我們結(jié)識了“if條件狀條件狀語從句語從句 + 祈使句祈使句”結(jié)構(gòu)。今天我們繼結(jié)構(gòu)。今天我們繼續(xù)學習續(xù)學習if從句，請看下面的例句。從句，請看下面的例句。A. You must see the doctor if you are ill. 如果你生病了，你必須去看醫(yī)生。如果你生病了，你必須去看醫(yī)生。B. I will go there with you if it doesnt rain tomorrow. 如果明天不下雨如果明天不下雨, 我將和你一起去那。我將和你一起去那。C. If you don

2、t study harder, you wont pass the exam. (= Study harder, and you will pass the exam.) 如果你再努力些，你就會通過考試。如果你再努力些，你就會通過考試。D. If you dont hurry, youll miss the plane. (= Hurry up, or youll miss the plane.) 如果你不快點兒如果你不快點兒, 你就趕不上飛機了。你就趕不上飛機了?！練w納【歸納】一、從呼應中看時態(tài)一、從呼應中看時態(tài) 1. 如果主句是一般現(xiàn)在時如果主句是一般現(xiàn)在時(包括含有情包括含有情態(tài)動詞態(tài)動

3、詞can, may, must等等), 從句也可用一從句也可用一般現(xiàn)在時。般現(xiàn)在時。 2. 如果主句是一般將來時如果主句是一般將來時, if條件狀語條件狀語從句不用將來時態(tài)從句不用將來時態(tài), 而要用一般現(xiàn)在時。而要用一般現(xiàn)在時。二、從轉(zhuǎn)換中看同義二、從轉(zhuǎn)換中看同義 “祈使句祈使句 + and / or + 簡單句簡單句”是一個是一個固定結(jié)構(gòu)，這里祈使句相當于一個由固定結(jié)構(gòu)，這里祈使句相當于一個由if 引導的條件狀語從句。用引導的條件狀語從句。用and引導的簡引導的簡單句常表示一個較好或理想的結(jié)果；單句常表示一個較好或理想的結(jié)果；用用or 引導的簡單句常表示一個不愉快引導的簡單句常表示一個不愉快

4、或不理想的結(jié)果；簡單句中的謂語動或不理想的結(jié)果；簡單句中的謂語動詞常用一般將來時。詞常用一般將來時?！具\用【運用】I. 請用括號內(nèi)所給動詞的適當形式填空。請用括號內(nèi)所給動詞的適當形式填空。1. If she _ (study) harder, she will catch up with us soon. 2. Sally _ (see) a film if she _ (be) free next Sunday. 3. If you _ (drive) too fast, you may have an accident.drive studieswill seeisII. 同義句轉(zhuǎn)換同義句

5、轉(zhuǎn)換, 每空一詞。每空一詞。1. If you cross the bridge, youll find the park. _ _ _ , _ youll find the park. 2. If you dont take a taxi, youll miss your plane. _ _ _ , _ youll miss your plane.orCross the bridgeandTake a taxiREWRITE THE SENTENCES, USING IF.Example:Listen in class, or you wont understand what to do.

6、 If you dont listen in class, you wont understand what to do.1. Eat some breakfast, or youll get hungry at school. _ _2. Hurry up! Well be late! _If you dont eat some breakfast, youll get hungry at school.If you dont hurry up, well be late.3. Read the instructions carefully. Then youll know what to

7、do. _If you read the instructions carefully,you will know what to do.COMPLETE THE SENTENCES. GIVE ADVICE WITH THE CORRECT FORM OF THE WORDS.Example:- I want to get high scores.- If you work hard, you will get high scores. (work hard/ get high scores)1. -How can I remember my friends birthdays? - If

8、_ _. (keep a note in your diary/not forget) you keep a note in your diary, you wont forget2. - Its late, but I dont want to go to sleep. - If _ _. (not get enough sleep/ feel tired at school) you dont get enough sleep, you will feel tired at school3. - I dont like speaking English outside the classr

9、oom. - If _ _. (not practice/ not improve) you dont practice, you wont improve4. -Should I tell my teacher I dont understand the work? - If _ _ (not tell her/ she not able to help you) you dont tell her, she wont be able to help you.5. - Is it OK if I watch TV for six hours? - If _ _. (you watch too

10、 much TV/ eyes hurt) you watch too much TV, your eyes will hurt.COMPLETE THE SENTENCES SO THAT THEY ARE TRUE FOR YOU.1. Ill be really happy if _.2. Well do well in English if _.3. My parents will be disappointed if _.4. If it rains next Saturday, _.5. If I get some money for my birthday, _.Complete

11、the conversation with the words and expressions in Activity 4.Answers:1. _ 2. _3. _ 4. _ 5. _ 6. _ 7. _ 8. _terriblepocket moneyproblemrefusedkeepproudmendhonestComplete the passage with the correct form of the phrases in Activity 5.Answers:1. _ 2. _3. _ 4. _ 5. _ 6. _ 7. _angry withgood atspend tim

12、eAt leastbe proud ofat the end ofAfter all1. feel sorry for sb. 同情某人同情某人2. find+sth.sb.+adj. 發(fā)現(xiàn)發(fā)現(xiàn)怎么樣怎么樣3. copy ones homework 抄作業(yè)抄作業(yè)4. instead of 代替代替5. see sb. doing 看到某人正在做看到某人正在做6. steal sth. from sb. / sp. 從某人從某人/某地偷某地偷7. tidy up 整理整理Choose one of the problems and write a reply. Say what will or

13、wont happen in each possible situation.Possible answer for problem C.You are quite right when you say that copying is dishonest and you shouldnt let Peter copy your work for that reason.However, there is another good reason for not doing it: if Peter really is yourfriend and you really do want to he

14、lp,copying will do the opposite. He will learn nothing and never get any better at maths. If you want to help him, why dont you spend some time explaininghow to do the problems, and helping him to work them out? You say he workshard help him to do so in the right way, and your friendship will be str

15、onger, and you will respect each other more.Listen to the conversations. Do the speakers give the same advice as you?What do the speakers think will happen if1. Kate doesnt tell the manager about the boy stealing?Shell lose her job.2. The manager finds out that Kate was doing her homework instead of

16、 tidying the shelves?3. Susan tells the teachers what Linda wants her to do?The manager will be angry.Linda will lose her part and Susan will lose her friend.4. Susan refuses the biggest part in the play?Shell lose the chance to make her parents proud of her.5. Helen lets Peter copy her work?6. Hele

17、n tells Peters parents about his problem?Shell be dishonest herself.Theyll be able to help him.1. An “agony aunt” is a helpful person.2. In the past, an “agony aunt” was usually an old woman.請閱讀請閱讀Around the world部分，判斷下部分，判斷下列各句正列各句正(T)誤誤(F)。TT3. An “agony aunt” only appears on magazines or newspape

18、rs.4. Actually, all the problems and answers are not real.5. Readers can help each other by giving advice on the Internet now.TFFExercisesI. 請根據(jù)句意用括號內(nèi)所給單詞的適請根據(jù)句意用括號內(nèi)所給單詞的適當形式填空。當形式填空。1. I had a bad day yesterday because someone_ (steal) my purse.2. If you want to say somebody is not honest, you can

19、use the word “ _ (honest)”.stoledishonest3. Put the books back onto those _ (shelf) if you have finished reading them.4. My shoes were _ (break) when I fell down from my bike. 5. If you dont tell him the truth, he will be even _ (angry) with you.angriershelvesbrokenII. 連詞成句。連詞成句。1. Linda, make, refu

20、sed, friends, him, to, with _2. if, forget, notes, soon, you, dont, you, will, take, it _ _Linda refused to make friends with him.If you dont take notes, you will soon forget it.3. a, pity, that, pass, you, the, didnt, its, exam _4. my, virus, computer, goes, has, because, it, a, wrong _Its a pity t

21、hat you didnt pass the exam.My computer goes wrong because it has a virus. 請用請用 if 合并下列句子。合并下列句子。1. We will have a picnic tomorrow. It wont rain tomorrow. _2. You are not tired. Lets go for a walk._We will have a picnic if it doesnt rain tomorrow.If you are not tired, lets go for a walk.3. Hurry up!

22、 You will be late. _4. He will leave for New York. It will be fine tomorrow. _If you dont hurry up, you will be late. He will leave for New York if it is fine tomorrow. 5. You sleep late tonight. You will feel tired tomorrow. _ _If you sleep late tonight, you will feel tired tomorrow.Writing a problem page for a magazine Work in pairs. Think of and write a problem. Work in groups. Read your problem to the group. Discuss advice for each problem.