高中英语语法.虚拟语气.ppt

2. It’s (about/high) time +that —— 过去时 should +v. （1）你该走了。 It’s high time that you went. It’s high time that you were going. It’s high time that you should go. （2）我们该去睡觉了。 It’s time that we went to bed. It’s time that we should go to bed. 3. without和but for 构成虚拟。but for要不是 Without sunlight, people’s life would be different from today. But for your help, I wouldn’t have finished the work. Without your help, I would have failed. But for water, it would be impossible to live in the desert. 4. If only (1) 要是……就好了 = I wish ①If only our parents could live with us! 要是我们的父母能和我们住在一起就好了。 ②If only I hadn’t missed the train! 要是我没错过火车就好了！ (2) = as long as 常用陈述语气. We can surely overcome these difficulties if only we are closely united.如果我们紧密团结就一定能战胜一切困难。 5.It’s necessary /strange/ natural/ important + that-Clause 从句中的动词要用虚拟，即（should）+动词原形 如： It is important that we ( should ) master a foreign language. It is strange that she refuse to come to the party. It’s necessary that we should study hard. 6. otherwise 和supposing也可以引导虚拟语气。例如： （1）The storm stopped, otherwise the sailors would have fallen into the sea. （2） I’m getting cold, otherwise I would keep her. （3）Suppose (Supposing) your friends knew how you are behaving here, what would they think? 7. so that 与in order that 二者引导的目的状语从句谓语部分应该用may/might/can /could, etc.+动词原形 如： （1） She stayed at home for a few days so that she might have more time to study it. （2） She listened carefully in order that she might discover exactly what he wanted. （3） He went to the station in a taxi so that he should not miss the train. 8.用 “may+动词原形”表示祝愿，但愿，此时may须置于句首 May good luck be yours!祝你好运！May you be happy!祝你快乐！May you do even better!祝你取得更大成就！ Long live the people! 人民万岁！“God bless you,” said the priest.牧师说：“愿上帝保佑你！” 含蓄条件句 非真实条件句中的条件从句有时不表现出来，只暗含在上下文中，这种句子叫做含蓄条件句。含蓄条件句大体有三种情况: 1.条件暗含在短语中。如： （1）What would I have done without you? (条件暗含在分词短语without you中) （2）It would be easier to do it this way. (条件暗含在