《【教案】Unit 4 Space exploration Discovering Useful Structures 教学设计-2021-2022学年高中英语人教版（2019）必修第三册.docx》由会员分享，可在线阅读，更多相关《【教案】Unit 4 Space exploration Discovering Useful Structures 教学设计-2021-2022学年高中英语人教版（2019）必修第三册.docx（3页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、Book3Unit 4 Space explorationDiscovering Useful StructuresTeaching aims：1. Identify the uses of infinitives as adverbials and attributes 2. Use infinitives to describe space facts and efforts to explore space 3. Make use of infinitives as adverbials and attributes in specific situations Important an
2、d difficult points:1. Help students identify the uses of infinitives as adverbials and attributes2. Lead students to use infinitives to describe space facts and efforts to explore space3. Design specific situations for students to make use of infinitives as adverbials and attributes4. How to use inf
3、initives as adverbials and attributes in real situationsTeaching procedures：STEP1:Pre-class 1. Greeting2. Leading-inRead the following sentences and focus on the italicised infinitives. Then figure out their functions and meanings. 1. I trained for a long time to fly airplanes as a fighter pilot. _2
4、. As we all know, an astronaut needs to be healthy and calm in order to work in space. _STEP2: Presentation 动词不定式作定语和状语一、动词不定式作状语1. 目的状语：可用在句首或句末，置于句首时常表示强调，常用结构：to do; in order to do, so as to do, l I said that to encourage him.l I walked quietly so as not to disturb the baby.l In order to help him
5、, we would do everything we can. 2. 原因状语：多用于“sb.+be+adj.+to do”句型中,此类形容词多是happy, sad, glad, excited, disappointed, shocked等表示喜怒哀乐的形容词他苏醒过来发现自己住院了。l Im glad to see you./She was disappointed to hear the news.l She is proud to have won the first place. 3. 结果状语：用于“too.to”常与only , enough 或too连用；“enough t
6、o.（足够.而能做.）”；“only to do（不料.;结果却.）”,so/such as to（那么.，以至于.） 句型中。l She is too tired to do the job. l He arrived at the train station, only to find the train had already left. l He is old enough to go to school.l She is so proud as to look down upon others.4. 作评论性状语有些不定式用于修饰整个句子，表明说话者的观点或态度，我们称之为评论性状语
7、。l To be honest，I dont like her.说实话，我不喜欢她。二、动词不定式作定语动词不定式作定语常用来修饰名词或不定代词，放在所修饰的词的后面。作后置定语。如：l Please make an effort to catch the bus.l He was the first one to think of the idea.l Do you have anything to say?动词不定式作定语，它与所修饰的名词或代词可能是主动关系，也可能是被动关系。如果是被动关系，且句中含有不定式动作的执行者时，不定式要用主动表示被动。He was the last one
8、to leave school yesterday.We have much homework to do everyday.动词不定式（短语）作定语修饰名词且与其所修饰的词之间为被动关系时，如果不定式中的动词为不及物动词，那么其后应加上一个含义上所需要的介词。如：I have no chair to sit on. He has no house to live in， STEP3: Practice:Complete the passage with the correct forms of the verbs in brackets. Sending people to other pl
9、anets or even beyond the solar system is not an easy goal _ (achieve). One of the problems is that the trip would take long time. For example, _ (use) the current technology, it would take over two years _ (get) to the planet, Mars. Although light is the fastest thing _ (know) in the universe, it ta
10、kes more than four years_ (reach) the star system. Will scientists figure out a way _ (store) sufficient food and water? No one knows the answers. _, space scientists never give up. They are experimenting with growing crops so as _ (help) astronauts get enough food on longer journeys through space.S
11、TEP4: ConsolidationComplete the sentences using the correct forms of the words.1. _ (make) it easier to get in touch with us, youd better keep this card at hand. 2. Anxiously, she took the dress out of the package and tried it on, only _ (find) it didnt fit. 3. Group activities will be organized aft
12、er class _ (help) children develop team spirit. 4. George returned after the war, only _ (tell) that his wife had left him. 5. With time （go） by, it spread all over the country.6. We were astonished _ (find) the temple still in its original condition. STEP5: Summary and HomeworkSummary:不定式（to do）的功能和意义：可作状语，表目的或结果，多可转化为 in order that/so that引导的状语从句；为强调目的，可用 in order to/so as to 。可作定语，起修饰或限定作用，可转化为定语从句。 Homework:同步练习学科网（北京）股份有限公司学科网（北京）股份有限公司学科网（北京）股份有限公司