1、Module 4New technology,Objectives：,帶有if的條件狀語從句。,Grammar,if 還可以當(dāng)“是否”講，主要用于賓語從句，相當(dāng)于whether，從句的時態(tài)根據(jù)語境來確定。 而if當(dāng)“如果”講，引導(dǎo)的是條件狀語從句。,If you want to turn on the recorder, press the blue button. If you like great music, please welcome Sally Maxwell!If the red light doesnt come on, wait for thirty seconds.,Exa

2、mples in this module,if 從句+祈使句,If 引導(dǎo)的條件狀語從句(1),1. If 從句的構(gòu)成,如果想去的話，請告訴我。 If you want to go, please tell me. 如果綠燈沒有亮，就等一下。 If the green light isnt on, wait a minute.,如果你想回放的話，按綠色按紐。 If you want to playback, press the green button. 如果要錄音的話，按紅色按紐。 If you want to record, press the red button. 如果你有空的話，我們?nèi)?/p>

3、散步吧。 If you are free, lets go out for a walk.,從以上例句中可以看出，If 所引導(dǎo)的從句是一個完整的句子，一定要有主語。,2. If 從句的位置,If 從句表示如果，可以放在主句之前， if從句+, 主句；也可以放在主句之后， 如：,如果喜歡這張照片就把它打印出來。 Print the photo if you like it. 如果照相機出故障就到我們網(wǎng)站上查看。 Look at our website if the camera does not work.,If I play well, Ill play the solo. If the te

4、acher chooses Kylie, shell play the dance music. If she becomes a star, her parents wont send her away.,Examples in this module,由 if 引導(dǎo)的從句叫條件狀語從句，if 意為“如果”。若主句是一般將來時，從句要用一般現(xiàn)在時。,If 引導(dǎo)的條件狀語從句(2),“主將從現(xiàn)”,時態(tài)“主將從現(xiàn)”,1. 主句一般將來shall/will/must/should(肯定/否定）+v.原形時，從句一般現(xiàn)在時,1. 如果你努力工作，你的夢想將會實現(xiàn)。,If you work hard,

5、 your dream will come true.,2. 如果明天下雨，我不會出去散步。,If it rains tomorrow, I wont go out for a walk.,2. if 從句用一般現(xiàn)在時，表示未來的一種條件，從句+時間狀語。,If you cant come tomorrow, we can hold the party a little later. 明天你如果不能來，我們可以遲一點舉行宴會。 If it doesnt rain tomorrow, well go to the Great Wall. 明天如果不下雨，我們就去長城。,Look and say,

6、用 if 從句描述圖片。,If the telephone , I it.,If you late, you late for school.,ring, answer,get up, late,rings,will answer,get up,will be,If you feel hungry, you should eat something.,If you feel tired, you must have a rest.,hungry, eat,tired, have a rest,If you are ill, you must go to see a doctor.,If you

7、 ride a bike in the street, you must be very careful.,ill, see a doctor,ride a bike, be careful,1. Ill call you if he _. A. come B. comes C. coming D. to come,I. 選擇填空。,QUIZ,2. If someone comes here, _ yourself behind the tree. A. hid B. hidden C. hide D. hiding,3. Be careful! If you _, an accident m

8、ay happen to you. A. wont B. dont C. arent D. cant,Complete the sentences with the correct form of the words,1. If you _ (receive) a text message, _ (answer) it. 2. If you _ (do) some work on your computer, _(save) it.,receive,answer,do,save,3. If a photo _(be, not ) good, _ (not show ) it to your f

9、riends. 4. If you _ (want) more information, _ (look) on a website. 5. If you _ (cant do ) something the first time, _ (try) again.,is not,dont show,want,look,cant do,try,If they _ _ (be free) free, I will go shopping with them. 2. What will youdo if you_ (find) a panda in danger?,用括號內(nèi)所給動詞或詞組的正確形式填空

10、。 注意 if 引導(dǎo)的條件狀語從句的用法。,3. If he doesnt study hard, he _ _ _ (not catch up) with his classmates. 4. If it _ _ (not rain) tomorrow, we will go there by bike. 5. If Mike _ _ _ (drop) out of school, we wont go and help him anymore.,are free,find,wont catch up,doesnt rain,drops out of,1. If it _ (rain) to

11、morrow, I wont be happy. 2. If it is _ (sun) next Sunday, I will go traveling. 3. If she _ (understand), she will put up her hand.,rains,sunny,understands,II. 用單詞的正確形式填空。,4. If he _ (work) hard, he will pass the exam. 5. _ , you must wait for the green light.,If you want to (across) a street,cross,w

12、orks,Complete the sentences with the correct form of the words.,1 If you _ (want) to listen to music, _ (choose) a CD. 2 If you _ (buy) a new camera, _ (get) a good one. 3 If the light _ (not come) on, _ (wait) for one minute.,want,choose,buy,get,doesnt come,wait,4 If you _ (want) to keep the picture, _ (save) it on your computer. 5 If it _ (not work), _ (wait) a minute and then _ (try) again. 6 If you _ (need) to send an email, _ (use) my computer.,doesnt wor