北师大选修7-混合虚拟语气.pptx

混合虚拟语气;一、虚拟条件句 ;① If I were you, I would not go there with him. ② If you came tomorrow, we would have the meeting. ③If you had taken my advice, you would not have failed in the exam.;二、混合虚拟语气 有时虚拟条件从句表示的动作和主句表示的动作在发生的时间上不一致，这种从句就叫做混合条件句。这种虚拟情况，就要根据不同的时间概念，适当调整主句和从句动词的形式，即根据所指的时间来选用动词形式，一般有以下几种情况： ①现在时与过去时的混合虚拟 If you had followed my advice just now, you would be better now. ; ②现在时与将来时的虚拟 If he were a skillful player, he would win the competition. ③过去时与将来时的混合虚拟 If he had arrived this morning, he might attend my wedding tomorrow. ;二、if省略句 在条件句中，可省略if, 把were, had, should 提到句首，变成倒装句式 If I were at school again, I would study harder. = If you had come earlier, you would catch the bus. = If it should rain tomorrow, we should not go climbing. = ;三、用介词或介词短语代替条件状语从句。 常用的有with,without,but for, otherwise等 ①what would you do with a million dollars? ②We couldnt have finished the work ahead of time without your help ③But for the rain, we would have finished the work. ;练习 1、If you ____________(ask) him yesterday, you ____________(know) what to do now 2、If something __________（go）wrong with the equipment today, we ____________(have) a terrible time tomorrow. 3、Amy would be alive today if the doctor ___________(come) sooner last night.