福建省2015年初中英语微课一等奖——if引导的条件状语从句.ppt

If引导的条件状语从句 主讲：吴永萍 单位：漳州实验中学 学段：初二年 What can we learn from the traffic accident? If引导的条件状语从句 We must obey the traffic rules. If we dont obey the traffic rules, we will hurt ourselves. break the traffic rules / get a fine If you . If you break the traffic rules, you will get a fine. If引导的条件状语从句 cross a busy road / be in danger You will be in danger if you cross a busy road. If引导的条件状语从句 If引导的条件状语从句 If you break the traffic rules, you will get a fine. You will be in danger if you cross a busy road. 当if 解释为“如果, 假如”， 引导条件状语从句。 一、位置 (可前可后, 从句在前用逗号和主句隔开) If he is at home, please call me. =Please call me if he is at home. 如果你骑车马虎，你会受伤。 If you ride carelessly, you will get hurt 如果我有时间，我会去看电影。 I will go to see a film if I have time. 1. If从句是一般现现在时时，主句是一般将来时时。 主将从现 二、结构与时态 如果你生病的话话,你一定要去看医生。 If you are ill, you must go to see a doctor. 如果你努力学习习，你会通过过考试试的。 If you work hard, you can pass the exam. 2. If从句是一般现现在时时，主句用情态动词态动词 。 二、结构与时态 如果你需要我的帮助，请告诉我。 Please tell me if you need my help. 如果你很累就休息一下。 If you are tired, have a rest. 3. If从句是一般现现在时时，主句为为祈使句。 以动词原 形开头 二、结构与时态 1) If you work harder, you can learn English well. = Work harder, _ you can learn English well. 2) If you dont hurry up, you will miss the train. = Hurry up, _ you will miss the train. 重难点突破 and or 主语为you的条件状语从句可与 “祈使句+ and / or +简单句”相互转换。 表顺承 表转折 一、改错 1. If everyone will obey the traffic rules, there will be fewer accidents. 2. Run faster, or you will catch the bus. 3. I come to see you, if I have time. 4. Well travel to Shanghai if it will be fine next week. 5. Works harder, or youll fail in the exam. obeys and you will catch the bus. will come to see you if I have time. is Work harder Find out the mistakes 6._ to the party, and youll have fun. A. Will goB. To go C. GoD. Going 7. I _ her the answer if she _me. A. can tell, will ask B. will tell, will ask C. would tell, ask D. will tell, asks 8. -Well go to the library tomorrow if it _. A. isnt rainB.