Unit2PoemsPeriod3　GrammarWriting课件（人教版选修6）.ppt

Period 3　Grammar Writing;二、错综条件句 有时，虚拟条件句中，结果主句和条件从句的谓语动作若不是同时发生，这种条件句叫错综条件句。主句和从句的谓语动词要依照假设的时间而定。 1．从句的动作与过去事实相反，而主句的动作与现在或现在正在发生的事实不符。 If I had worked hard at school，I would be an engineer，too. 如果我在学校学习刻苦的话，我现在也会成为一个工程师了。 If they had informed us，we would not come here now. 如果他们通知过我们的话，我们现在就不会来这里了。 ;2．从句的动作与现在事实相反，而主句的动作与过去事实不符。 If he were free today，we would have sent him to Beijing. 如果他今天有空的话，我们会已经派他去北京了。 If he knew her，he would have greeted her. 要是他认识她的话，他肯定会去问候她了。;三、含蓄条件句 非真实条件句中的条件从句有时不表达出来，只暗含在副词、介词短语、上下文或其他方式表示出来，这种句子叫做含蓄条件句。 1．用without，with，but for等介词所引起的介词短语来表示隐含的条件。 Without your help，we wouldnt have achieved so much. 没有你的帮助，我们不可能取得这么大的成绩。 But for your help，I would not have succeeded in the experiment.如果没有你的帮助，我的实验就不会成功。;2．用连词or，otherwise，but，however等表示隐含的条件。 We didnt know his telephone number; otherwise we would have telephoned him. 我们不知道他的电话号码，否则我们就会给他打电话。 She would have come here, but she was too busy with her homework. 她本来早就要到这里来，但是她当时太忙于做作业了。 ;3．if it be not for...，也是一种条件虚拟语气从句。 If it had not been for the help of our teacher，we should not have made so much progress. 要是没有老师的帮助，我们就不会取得那么多的进步。 If it had not been for me，you would not be free. 要不是我的话，你就得不到自由了。 4．相关动词分词或短语充当连词 过去分词provided，动词原形suppose (that)，现在分词supposing等。 Suppose (that) I were you. 要是我是你多好。;5．条件暗含在上下文中。 I would not have done it that way. 我是不会??么做的。(可能暗含if I were you) You might come to join us in the discussion. 你可以参加我们的讨论。(可能暗含if you wanted to) I would have bought the DVD player. 我是会买下那台影碟机的。(可能暗含if I had the money) It would cause great trouble not to lubricate the bearing immediately. 不立即润滑轴承就会引起很大的故障。(暗含条件是not to lubricate the bearing immediately) ;【感悟高考】 ①Jack is a great talker.Its high time that he________something instead of just talking.(2012·辽宁，33) A．will do B．has done C．do D．did 解析　句意：杰克是一个大空谈家，到他该做事情而不是空谈的时候了。考查虚拟语气。根据虚拟语气句型It is high time that sb did sth 或It is high time that sb should do sth 到某人该做某事的时候了，选D项。 答案