【精讲精练】if引导的从句(共33张PPT).ppt

1、If引导的从句,【精讲精练】,A joke,A man liked a girl very much and asked if the girl could marry him. But the girl didnt agree. She said ,“even if（即使） there is only one man left, I wont marry you.”,If 引导宾语从句,My dream,宾语从句 1.Can you tell me what your dream is? 2.I want to know if/whether she/he has a dream. (是否)

2、 3.I asked her/him if/whether she/he had a dream. (是否),由从属连词whether, if 引导的宾语从句,e.g. 1. I want to know _ . （他是否跟我们一起去公园） 2. Ask him _ . （他是否能来）,if (whether) he will go to the park with us,whether (if) he can come,If 与whether 的区别,I dont know _ he will come or not. I dont care of _ he is handsome. He

3、wondered _ to stay here the next week. _ he will come is not decided.,与or not 连用只能用whether,介词后只能用whether,与to do 不定式连用只能用whether,作主语只能用whether,Lets do some exercises.,If引导的宾语从句练习题,1 I dont know _ they have passed the exam. what B. if C. when D. where 2. The girls asked if they _ some food and drink w

4、ith them. A. took B. take C. takes D. will take 3 She asked Linda if_ go and get some. A. could she B. she could C. she can D. she may 4. I dont know _ the day after tomorrow. A. when does he come B. how will he come C. if he comes D. whether hell come,B,A,B,D,II. 按要求转换句型。 1. Does Mr. Brown enjoy li

5、ving in China? Could you tell us?（改写句子） Could you tell us _ Mr. Brown _ living in China? 2. Did Peter come here yesterday? Li Lei wants to know. (改为含宾语从句的复合句) Li Lei wants to know _ Peter _ here yesterday.,if/whether,enjoys,if/whether,came,My dream,What will you be if you grow up?,A: What will you b

6、e if you grow up? B: I will be a teacher. A: Why? B: If I am a teacher, I will teach some children.,A: What will you be if you grow up? B: I will be a/an. A: Why? B: If I am a/an., I will .,Pair work,If 引导条件状语从句,If 引导条件状语从句,If I have enough money, I will travel around the world. =I will travel aroun

7、d the world if I have enough money.,if 引导的条件状语从句,主将从现,祈使句,情态动词,I will sing a song if I am happy.,主句,从句,Dont cross the road if the light is red.,You must stop if the traffic light is red.,巧记、速记,语法1：if（如果）引导的条件状语从句,主祈从现 主将从现 从主有逗 主从无逗,Lets do some exercises.,if引导的条件状语从句,一 在正确的答案下划一条线。 1. Tina ( will g

8、o/go/goes) to Europe if she (will pass/pass/passes) the exams . 2. If there (will be/ are/is) a car accident, they (will call/call/calls) 110 for help at once. 3. Dont wait for me if I (am/ will be) late. 4.You must study if you (want/will want) good grades.,二、用所给词的适当形式填空 1.If you _(feel) tired, you

9、 _ (have) to have a rest. 2. Where _ he _(see) the film if he _(have) time? 3. If there _(be) fewer trees, there _( be) more pollution. 4. He _(dress) more casually if he _ ( not work) on weekends.,feel,will have,will,see,has,are,will be,will dress,doesnt work,Part1:If 的用法,1.I want to know if he wil

10、l go to a park with us.,2. We will have a picnic if it doesnt rain.,3. Can you tell me if there will be a concert tomorrow?,4. If you feel tired, you must have a rest.,宾语从句,条件状语从句,条件状语从句,宾语从句,Part2:Unless的用法,You will fail to arrive there in time unless you start earlier.,If you dont start earlier, y

11、ou will fail to arrive there in time.,unless = if.not 除非,若不,除非在的时候,You will not succeed unless you work hard. =If you dont work hard, you will not succeed.,As soon as与what if用法,I will call you as soon as he arrives in Beijing. What if you do when he makes mistakes?,My dream,I want to be a millionair

12、e like Bill Gates.,If 引导虚拟语气,1 A: Look. This old man had a million dollars, and he gave it to charity. B: Wow! What would you do if you had a million dollars? A: Id give it to medical research.,What would you do if you had a million dollars?,Pair work,Many students (In Grade 9) dont like to answer t

13、eachers questions in class.,Teachers problems,If I were one of those students, I would_. If I_, I would _. If I _ , I would _ If I _, ,answered most questions in every class,answer most questions in every class,practice more,practiced more,learn better,Writing in groups,If I were a teacher/movie sta

14、r/bird ,learned better,3-5 minutes,分析试题特点及做题思路：,考连词- 做题思路 考时态-做题思路：,分析句子- 判断关系- 选择正确的if的用法,判断语境提供的时态特点- 选择正确的时态,2.Youmay _ (pass)theexam ifyou _ (study)hard.,4. If it rained, they _ (stay) at home. 5.We wont go to the park if it_(rain) tomorrow.,rains,will stay,pass,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,would stay,rains,5. What _ you _ (do )if you had a lot of money?