一、虚拟语气在条件句中的使用用心 爱心 专心1[注意] (1)用介词 with,without,but for 等替代条件句。But for your advice,I could not have done it so successfully.要是没有你的建议,我就不会那么成功。The changes could not have taken place without the open door policy.要是没有开放政策,就没有这些变化。(2)省略 if 的虚拟条件句。if 引导的虚拟条件句的谓语动词中含有 had,should,were 时,可将 if 省略。而将had,should,were 置于句首,采用倒装语序,而句意不变。Had he worked harder,he would have got through the exams.如果他学习刻苦些,他就会通过考试了。Were she younger,she would do it.如果她再年轻点,她会做这件事的。Should it rain next week, the farmers would have a good harvest.倘若下周下雨,农民就会有好收成。二、混合(时间)错综型虚拟条件句 通常情况下,在非真实条件句中主句和从句的谓语动词所指的时间是一致的,但有时也可能指不同的时间,这时要根据上下文的意思采用不同的谓语动词形式。即:从句和主句根据各自谓语动作发生的时间不同,采用相应的谓语动词形式。1.从句表示过去,主句表示现在 If they had started the early morning yesterday,they would be here now. 如果他们昨天一大早出发的话,他们现在该到这里了。2.从句表示将来,主句表示过去 If I were not to make a preparation for my experiment this afternoon,I would have gone to see the film with you last night.如果不是准备今天下午的实验,我昨晚就和你一块 去看电影了。3.从句表示过去,主句表示将来用心 爱心 专心2 If we hadn't made adequate preparations,we shouldn't dare to do the experiment next week. 如果我们没有做好充分准备,下周我们就不敢做此实验。4.从句表示将来,主句表示现在 If we shouldn't have an exam this afternoon,I would go shopping now.如果今天下午我们不考试,我现在就去购 物了。5.从句表示现在,主句表示过去 If I were you,I would have gone to her birthday party. 如果我是你,我就去参加她的生日聚会了。6.从句表示过去,主句表示过去和现在 If you hadn‘t lent me some money,I couldn’t have ...