Module 4 Sandstorms in Asia Grammar 课件 高中英语外研版必修三

1、Module 4 Sandstorms in AsiaTo learn about infinitiveTo understand the pattern of but + infinitiveLook at the examples a-f. The underlined phrases are examples of different types of infinitive.a The wind is strong enough. It can move sand dunes. The wind is strong enough to move sand dunes.b We were

2、advised,“Don t go outside.” We were advised not to go outside.c Im cycling to work in a sandstorm and its frightening. Its frightening to be cycling to work in a sandstorm.d There is nothing anyone can do. There is nothing to be done.e I am the only person in my family who has been in a sandstorm. I

3、 am the only person in my family to have been in a sandstorm.f Ive been caught in a sandstorm. It was a terrible experience. To have been caught in a sandstorm was a terrible experience.不定式的形式及含义不定式形式含义不定式的一般式to do表示的动作与谓语所表示的动作或状态同时发生或在它之后发生。不定式的进行式to be doing表示正在进行的与谓语动词所表示的动作同时发生的动作。e.g. Im glad

4、to see youre feeling better. Although it was expensive, we decided to buy it. We found the weather to be improving.不定式形式含义不定式的完成式to have done 表示的动作发生在谓语所表示的动作之前。不定式的被动式to be done / to have been done逻辑主语与不定式表示的动作之间是被动关系。e.g. Carl has recently been discovered to have bought a new car. I wish to be exc

5、used for being so late today. The book is said to have been translated into many languages.不定式在句子中充当主语、宾语、表语、补语、定语和状语。1. 作主语。表具体某次动作，谓语动词用第三人称单数；常用it作形式主语，真正的主语不定式放在谓语后面。 e.g. To answer that question is difficult. It is foolish to read such a book.2. 作宾语。若带有宾语补足语时，常用it作形式宾语，真正的宾语不定式后置。 e.g. I cant s

6、tand to see you like this. He is finding it difficult to finish the task.3. 作表语。常用来说明主语的具体内容。 e.g. My only wish is to do something for the public. 【注意】不定式作表语时，其主语除了表示意向、打算、计划等的词之外，常见的还有idea, task, purpose, duty, dream等。e.g. The purpose of the book is to provide a complete guide to the university. He

7、r dream is to make a movie.4. 作宾语补足语。补充说明宾语要干什么。 e.g. The manager asked them to leave. 5. 作定语。位于所修饰的词之后。 e.g. Whats the right way to address the Queen? 6. 作状语。表示目的、原因、结果等。 e.g. He was doing this to make me more relaxed. Jerry was very disappointed to hear it. I ran to the station only to find that t

8、he train had left.Rewrite these sentences using infinitive structures. Use the examples in Activity 1 to help you.1. Im travelling during a sandstorm. Its dangerous. It is dangerous to _2. Experts hope that they will learn more about the movement of thunderstorms. Experts hope to _ _ travel during a

9、 sandstorm. learn more about the movement of thunderstorms.3. We were told, “Dont leave the house.” We were told not _4. The men need to complete the work on the house by the end of the week. The work on the house needs to _ _5. It seems that most houses have been destroyed by the storm. Most houses

10、 seem_to leave the house be completed by the end of the week. to have been destroyed by the storm.1. It is frightening _ (walk) in the road in a sandstorm. I hope I reach home soon. 2. Experts hope _ (learn) more about the movement of sandstorms.3. Id like _ (tell) about the situation before now.4.

11、The work needs _ (complete) by the end of the week.to walk to learn Put the verbs in brackets into the correct infinitive forms. to be told to be completed5. My father was out of the city when the sandstorm came. He was very glad _ (miss) it. 6. The building has _ (finish) by the end of the year. 7.

12、 _ (see) a real sandstorm was very frightening. to be finished To see to have missed 1. The next morning he hired a boat and set out 67._ (find) the well-known painter. (2020全卷 语法填空)2. _ us prepare for the exam, the teacher suggested reading through our notes. A. To help B. Helped C. Helping D. Bein

13、g helped(2020天津卷) to findA3. Modem methods of tracking polar bear populations have been employed only since the mid-1980s, and are expensive _ (perform) consistently over a large area. (2019全国卷I 语法填空)4. Picking up her “Lifetime Achievement” award, proud Irene declared she had no plans _ (retire) fro

14、m her 36-year-old business. (2019年全国卷II语法填空)to retireto performbut+不定式的用法Look at the words and phrases in red in these sentences. Answer the questions below.a And yet we do nothing but talk about it.b I cant help but feel very concerned.c I cant but wonder what will happen1. Which word or phrase mea

15、ns except? 2. Which word or phrase means I have to? 3. What part of the verb follows the words in bold?the infinitive without “to”ab and c观察句中不定式的用法, 然后加以总结。 1. The little boy does nothing butcry.2. I had no choice butto cancelmy holiday.连词but之前如有动词do, 其后的不定式通常不带to; but之前如无do, 其后的不定式一般要带to 3. I cant

16、 butacceptthis suggestion.4. We cannot choose butobservethe rules.5. Lee cant help butagreewith her.cant but, cant choose but, cant help but之后的不定式一般不带to。 The only thing he can do now is(to) give upthe plan. 动词不定式作表语，说明实义动词do的具体内容时，既可带to也可不带to。 1. I cant help / but hope that they will succeed.2. I ca

17、nt help but think / to think that it was a mistake. 3. I cant chose / choose but do it. 4. He does nothing but complaining / complain. 5. I cant help but to love / love her.6. The workers do nothing / not but drink tea and talk to each other.Underline the correct answer. 用括动词的正确形式完成短文。AIt may be imp

18、ossible to advise my mother 1. _ (giving up / to give up) her job even though shes having health problems. We cant even get her to cut down on her working hours, because she enjoys 2. _ (working / to work) so much. I admire her for her enthusiasm (热情), but I also want her 3. _ (taking care of / to take care of) her health.to give upworkingto take care ofBTraffic has become too heavy for the Steinbergs 1. _ (going / to go) to work in the city. Theyre considering 2. _ (moving / to move) to an apartment close to their places of work. They do