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1、If引导的从句【精讲精练】A jokeA 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)3.I a
2、sked 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 comeIf 与whether 的区别1. I dont know _ he will come or not.2. I dont care of _ he is handsome.3. He wonder
3、ed _ to stay here the next week.4. _ 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whetherLets do some exercises.If引导的宾语从句练习题1 I dont know _ they have passed the exam. A.what B. if C. when D. where 2. The girls asked if they _ some food and drink with them
4、. 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 comeBABDII. 按要求转换 句型。 1. Does Mr. Brown enjoy living in China
5、? 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/whetherenjoysif/whethercameMy dreamWhat will you be if you grow up?A: What will you be if you grow up? B:
6、 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 workIf 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 around the world if I have
7、 enough money.if 引导的条件状语从句u主将从现 u祈使句 u情态动词I will sing a song if I am happy.Dont cross the road if the light is red. You must stop if the traffic light is red.语法1：if（如果）引导的条件状语 从句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 go/go/goes) to Europe if she (will pass/pass/passes) the ex
8、ams .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 _ (have) to have a rest.2. Where _ he _(see) the film if he _(
9、have) time?3. If there _(be) fewer trees, there _( be) more pollution.4. He _(dress) more casually if he _ ( not work) on weekends.feelwill havewillseehasarewill bewill dressdoesnt workPart1:If 的用法1.I want to know if he will go to a park with us.2. We will have a picnic if it doesnt rain.3. Can you
10、tell me if there will be a concert tomorrow? 4. If you feel tired, you, you must have a resthave 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 You will fail to arrive there in time unless you start earlier.time unless you start earlier.If you dont start earlier, If you d
11、ont start earlier, you will fail to arrive there in timeyou will fail to arrive there in time. .unless = if.not unless = if.not 除非除非, ,若不若不, , 除非在除非在的时候的时候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
12、in Beijing.What if you do when he makes mistakes?My dreamI want to bea millionaire 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 ha
13、d a million dollars?Pair workMany students (In Grade 9) dont like to answer teachers questions in class.Teachers problemsIf I were one of those students, I would_.If I_, I would _.If I _ , I would _ If I _, answered most questions in every classanswer most questions in every classpractice morepracti
14、ced morelearn betterWriting in groups If I were a teacher/movie star/bird learned better3-5 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.You may _ (pass) the exam if you _ (study) hard. 4. If it rained, they _ (stay) at home.5.We wont go to the park if it_(rain) tomorrow.rainswill staypassstudy3. If you want to record, _(press)the red light.press1.If It_ (rain) tomorrow, I _ (stay) at home.Fill in the blankets with the proper form would stayrains5. What _ you _ (do )if you had a lot of money? 6. What would
