专题01 动词不定式（精讲课件）-2021高考英语非谓语动词考点透析微专题(共36张PPT)

2021高考英语总复习之 动词不定式 动词不定式 不定式的时态 不定式的被动式 不定式的否定形式 不定式主动表被动 学习重点： 不定式的时态 不定式常用的时态有：一般式、完成式、进行式和完成进行式 　　 时态 构成 一般式 完成式 进行式 完成进行式 to do to have done to be doing to have been doing 1) 一般式表示的动作, 有时与谓语动词表示的动作同时发生, 有时发生在谓语动词表示的动作之后。 He seems to know this. I hope to see you again. It seems that he knows this. I hope that I’ll see you again. 2)不定式的完成式有两种用法 He seems to have caught a cold. 很抱歉给你带来这么多麻烦 I’m sorry to have given you so much trouble 他似乎感冒了 I’m sorry that I have given you so much trouble. It seems that he has caught a cold. A. 表示的动作发生在谓语动词表示的动作之前。 B. 在intended, expected, hoped, promised, wanted, wished, thought，would love后用不定式的完成式表示过去没有实现的愿望、期待或计划等。 我本打算来看望你 I intended to have come to see you. 我原本希望早点儿完成工作 I hoped to have finished the work earlier. She seemed to have heard about it already. 1.It is said that he has written a new book about workers. 不定式的完成式构成复合谓语，如： He is said to have written a new book about workers. 句型转换 2.It was reported that the enemy had surrendered. The enemy was reported to have surrendered. 3.It seemed that she had already heard about it. He seems to be eating something. 3) 如果不定式表示一个正在发生的动作，则用进行式。如： It seems that he is eating something. 他似乎正在吃东西 不定式的进行式构成复合谓语，如： They are said to be building another bridge across the river. They seem to be getting along quite well. I happened to be going that way too. 4) 如果不定式所表示的动作在谓语所表示的时间之前开始进行，到谓语动作发生时可能停止，也可能会继续持续下去就需要用完成进行式，如： She is known to have been working on the problem for many years. They are said to have been collecting folk songs in Yunnan. She wished to have been training as hard as the others. It’s a great pleasure to have been working with you 据说他已经出了国。但是我不知道他现在正在哪一个国家学习。 Practice He is said to have gone abroad, but I don’t know in which country he is learning now. 他似乎在写一篇文章。但是我不知道是关于什么的。 He seems to be writing an article. But I don’t know what it is about. 据说他的作品被译成了多种文字. His works are said to have been translated into many languages. 不定式的被动式 如果动词不定式的逻辑主语是这个不定式所表示的动作的承受者，不定式一般要用被