新概念二Lesson16 if条件状语从句.ppt

If you go to the party, youll have a great time!,If I get up at 7:00, I will be late.,If I am late, the teacher will be angry with me.,If the teacher is angry with me, I will be sad.,If you get up late, you will be late for school. ,if 从句,主句,由if引导的从句叫条件状语从句，if意思为“如果”。,例如：We will go to the park if it _ _ (rain) tomorrow.,Grammar,含if条件状语从句的主从复合句,1. if 条件状语从句中，主句用一般将来 时，if从句用_表示将来, _原则。,doesnt,主将从现,rain,一般现在时,It is going to rain tomorrow.,I will stay at home.,If it _ tomorrow, I _ _ at home.,rains,will,stay,If it _ sunny tomorrow, they _ _ a trip.,It will be sunny tomorrow.,They will have a trip tomorrow.,is,will,have,He wont study hard.,He will fail in the exam.,“If he _study hard. He _ _ in the exam.”,doesnt,will,fail,She will be late.,If she _ to school, she _ _late.,She is going to walk to school.,walks,will,be,If I have much money, I will buy a big house.,travel all over the world.,buy lots of delicious food.,If I have a lot of money , I will buy a car. If I buy a car , I will travel everywhere. If I travel everywhere, I will be happy. If I am happy, I will be healthy.,She must see a dentist if she has a toothache. You can go shopping with your sister if you have time this afternoon.,2. if 条件状语从句中，主句可以是 must，can，may 等情态动词，if从 句用_。,例如：You must stop if the traffic light _ (be) red.,is,一般现在时,“主情从现”,If you feel hungry, you should eat something.,If you feel tired, you must have a rest.,If you are ill, you must go to see a doctor.,If you are riding a bike , you must be careful.,Call me if Tina comes. Have a good rest if you are tired.,例如：Don t wait for me if I _ (be) late.,3. if 条件状语从句中，主句可以是祈使句，从句用_表示将来。 _原则。,am,主祈从现,一般现在时,2. If it _ (be) cold tomorrow, I will wear my sweater.,3. He can go home if he _ (finish) his homework.,finishes,1. Put up your hands if you _ (have) any questions.,have,is,趁热打铁,*If you are happy, what will you do?,If I am happy, I will smile/sing.,* If you become sad, what will you do?,If I become sad, I will cry.,*What will happen if you do too much work?,If I do too much work, I will get tired.,Competition,VS,if will she, call me, I, tell her about it,If she calls me, I will tell her about it.,he ,come, next weekend, I ,tell you,If he comes next weekend, I will tell you.,not rain , go hiking ,this afternoon,If it doesnt rain, I will go hiking this afternoon.,it, be sunny, she, fly a kite,If it is sunny, she will fly a kite.,he,have free time, go to Shanghai ,If he has free time, he will go to Shanghai.,she, study hard, she, get good grades,If she studies hard, she will get good grades.,( ) 1. If it _ sunny tomorrow, I _ boating. A. is go B. will be, go C. is, will go D. will be, will go ( ) 2. - what will you do if it _ tomorrow, -Ill stay at home and watch TV. A. rain B. rains C. will rain D. is raining,C,B,( ) 3. If he _, I _ him the time. A. comes, tell B. will come, will tell C. comes, will tell D. will come, tell ( ) 4. If it _, it _cold. A. snows, will be B. snows, is C. will snow, will be D. will snow, is ( )5. If you _a stone into water, it _. A. put, sinks B. put, will sink C. will put, sinks D. will put, will sink,C,B,A,Translate the following sentences: 1. 如果你请他帮忙,他会帮你的。 If you ask him, he will help you. 2. 如果你考试不及格,你会让他失望的。 If you fail in the exam, you will let him down. 3. 如果你作业做完了,就可以回家了。 If you have finished the homework，you can go home 4. 如果周六你去购物，我就去。 If you go shopping on Saturday, I will go. 5. 如果我早早地到那里，我就可以快点看病。 If I get there early，I can see the doctor quickly.,See you !,