虚拟语气,河南上海江苏北京高三学生必备

If引导的真实条件句 主将(现)从现： If it rains tomorrow,I will stay at home. When he grows up,he will understand. When:正常情况下会在将来发生 If I run into problems,I will/always turn to my dad. If:不知道是否发生 主情从现 If it doesn’t rain,I can go camping with you. 主祈从现 If you are happy,clap you hands. 一. 虚拟条件句中的虚拟语气 ——明明是假话，你还得说，就要用“虚拟语气”的形式来说。 1. 表示与现在事实相反的情况 从句：If+主语+did(be动词用were) 主句：主语+ should/would/might/could+do If I were you,I would take an umbrella. 如果我是你，我会带把伞。（事实：我不可能是你） If there were no air or water,there would be no living things on the earth. 如果没有水和空气，地球上就不会有生物。(事实：地球上既有空气也有水) If I had a billion dollar,I would buy you furniture for you house. 2. 表示与过去事实相反的情况 从句：If+主语+had+done 主句：主语+should/would/might/could+have done If I have been you,I would have accepted her offer.如果我是过去的你，我会接受她的提议。 If I had got there earlier,I should/would have met her. 如果我早到那儿，我就会见到她。（事实：去晚了） If he had taken my advice,he would not have made such