高二unit8wordsstudygrammerppt

高二unit8wordsstudygrammerppt内容摘要：

u, he, they)＋had＋过去分词的形式；主句的谓语用 should（第一人称）/would（第二、三人称） /could/might have ＋动词过去分词。 如果你仔细一点， 这个错误是可以避免的。 If you had been more careful, the mistake might have been avoided. 昨晚如果有时间，我就会来看你的。 If I had time last night, I should have e to see you. 假如受过良好的教育，他就不会表现成那样。 He would never have behaved like that if he had had a good education. 假如我的表不停，我就会准时的。 If my watch had not stopped, I should have been on time. 3 与将来事实相反 从句的谓语用 If I (we, you, he, they) ＋动词过去式或 were to do 或 should do 形式，主句谓语用 should（第一人称）/would（第二、三人称） /could/ might ＋动词原形。 假如他来了， 我们对他说什么呢。 If he were to e, what should we say to him. 假如他看见我， 就会认识我。 If he should see me, he would know me. 假如我们爬上山顶，我们能有一个好的视野吗。 If we climbed to the top of the mountain, should we get a good view? 5 当条件状语从句表示的行为和主句表示的行为所发生的时间不一致时，被称为“错综时间条件句”，动词的形式要根据它所表示的时间作出相应的调整。 如果他早点出发，他现在已到家了。 If he had set out earlier, he would be home now. 假如我不忙，我家会来了。 If I were not busy, I would have e. 假如你接受了我的意见，你现在就会好的多。 You would be much better now if you had taken my advice. 6 用介词短语代替条件状语从句。 常用的介词由 with, without, but for等。 What would you do with a million dollars?=if you had a million dollars 4 If从句中若含有 should, had 或者 were，那么就可以把它们放在句首，与主语颠倒形成倒装，但动词过去式不可以与主语倒装。 如果他在，他会来帮助我们。 Were he here, he would e to help us. 假如你刚才在这里，你就会遇见她。 Had you been here just now, you would have met her. 假如我明天看见他，我就会告诉他关于这一切。 Should I see him tomorrow, I would tell him about it. 假如你按照我说的去做，你就会成功。 Had you done as I told you, you would have succeeded. We couldn’t have finished the work ahead of time without your help. (＝ if we hadn’t got your help) But for rain(=If it hadn’t been for the rain), we would have finished the work. 7 含蓄条件句 有时为了表达的需要，在虚拟语气中并不总是出现 if引导的条件句，而通过其他手段代替条件句。 I was ill that day. Otherwise, I would have taken part in the sports meet.（副词） He telephoned to inform me of your birthday, or I would have known nothing about it .（连词） A man who stopped drinking water would be dead in about seven days. （定语从句） Everything taken into consideration, they would have raised their output quickly.（独立主格结构） 二、虚拟语气在宾语从句中的用法 1 在动词 wish后的宾语从句中，表示与现在或过去的事实相反，或对将来的主观愿望，从句通常省略连词 that。 （ 1）表示对现在情况的虚拟：从句动词用过去式或过去进行式（ be动词一般用 were）。 我希望知道这个问题的答案。 I wish I knew the answer to the question. 但愿北京全年是秋天。 I wish it were autumn in Beijing all the year aro。