ConditionalsConditionals条件句条件句1. If the weather is good, we will go out tomorrow.2. If I were you, I would study hard.3. If you heat the ice, it turns to water.First conditional: 真实从句 , 条件有可能实现的 Second conditional: 非真实从句 , 不可能实现的 , 与现在事实相反 Zero conditional: 零条件从句 , 客观事实 , 有先后次序 123If 从句 : 一般现在时，主句：将来时条件从句为： If + 主语 + 动词过去式；主句为：主语 + would/should+ 动词原形If 从句 : 一般现在时，主句：一般现在时Review: If 引导的条件状语从句 :1.First conditional: 真实从句 , 条件有可能实现2.Second conditional: 非真实从句 , 不可能实现的 , 与现在事实相反 3.Zero conditional: 零条件从句 , 客观事实 ,4.Third conditional: 虚拟语气条件从句 , 与过去事实相反If sb. + _________ , sb. ________ ___________ + third form of the verb. had donewouldhave done1. 1. ifif we we chewchew our food until it is soft in our our food until it is soft in our mouths and then swallow it, it mouths and then swallow it, it willwill help our help our bodies digest it better.bodies digest it better. 2. 2. ifif it it hashas green plants materials added to it, green plants materials added to it, helpshelps to stop tooth decay. to stop tooth decay. 3. 3. if if people people werewere to chew sugar-free gum to chew sugar-free gum after a meal, it after a meal, it wouldwould helphelp prevent tooth prevent tooth trouble .trouble . 4. 4. ifif you you hadhad chewedchewed sugar-free gum regularly sugar-free gum regularly for the last year, it is possible that you for the last year, it is possible that you wouldwould havehave lostlost up to 5 kilos by now. up to 5 kilos by now. 02135. 5. if if people people chewed chewed 100 times per minute100 times per minute for 12 minute for 12 m...
