新教材人教版备课必备 选必三U2语法学案.docx

《新教材人教版备课必备 选必三U2语法学案.docx》由会员分享，可在线阅读，更多相关《新教材人教版备课必备 选必三U2语法学案.docx（9页珍藏版）》请在第一文库网上搜索。

1、Unit 2 Healthy lifestyleDiscover useful structuresThe Infinitive as the Subject【课标要求】该部分为语法部分，内容是动词不定式(infinitives)作主语，活动围绕本单元的 主题“健康的生活方式”展开。该部分的三个练习体现了从感知语法现象，发现语 法形式表达的意义和功能，到完成控制性的书面操练，再到真实语境中正确选用 目标语言结构的语法学习过程。【学习目标】1. Know the different forms of the infinitive;2. Master the use of the infiniti

2、ve as the subject;3. Use the infinitive as the subject in the specific context correctly.【学习重难点】1. How to summarize the forms and functions of the infinitive.2. How to use the infinitive as the subject in the specific context correctly.【课前预习案】预习课本P17并完成相应习题。【合作探究案】 Lead inTasklRead the following sen

3、tences and analyze what part does the underlined part serve as in each sentence?1. To change bad habits is never easy.2. It took the surgeon three hours to finish my mother,s lung surgery.3. Tojoin the People,s Liberation Army, it is required for men to shave off their beards.4. It was not polite to

4、 disturb your neighbors with loud music last night.Task 2Compare the following sentences and find the differences of the subjects.1. To change bad habits is never easy, even with many attempts.2. To prevent harmful habits like these from dominating a teenager,s life is essential.3. After all, it is

5、not easy to break bad habits.4. However, during this period, it can be easy for some of them to form bad habits.5. How to use the computer is a question.6. When to go there has not been decided yet. Summary动词不定式作主语有三种形式：L直接放在 作主语；2.为了保持句子平衡，用 作形式主语，放在句首，把真正的主语一动词不定式置于句后；3,和 构成短语作主语。Observe and disco

6、verObservation 11. To Soe is to believe.2. To do this is to CUt the foo to fit the shoe.3. TO Say is one thing and to do is another.4. To make a detailed PIan is a good idea to make it SUCCeSSfUL从位置上看，动词不定式作主语，通常放在句首。当句子主语和表语都是非谓 语时，通常要，例如：To see is to believe. = Seeing is believing.Observation 21.

7、For him to admit his mistakes is not easy.2. FOr US Io finish the COmPoSition in a quarter Of an hour is really difficult. Discovery 2动词不定式作主语可以带上自己的 ，一般用for/of短语来表示。但此时多使用形式主语it来引起，使得句子保持平衡。例如，第 2 句可以改为：It is really difficult for us to finish the composition in a quarter of an hour.Observation 31.

8、TO be WOrking all day Iong is a bore.2. To have made the Same mistake KWiCe is unforgivable.3. To IOVe and to bIOVed is the great happiness. Discovery 3动词不定式作主语可以有不同的 形式。Observation 41. It isn,t right to talk like that.2. It,s difficult to master English.3. It,s hard for me to answer the question.4.

9、 It is better to have loved and lost than never to have loved at all.以上四个句子有两点共同之处：L句子的真正主语都是,但都使用it作形式主语；2.句子的表语都是 oObservations1. It isn,t right for US to stop half way. = To stop half way is not right.2. It,s kind Of you to think so much of us. = You are kind to think so much of us. Discovery 5动词

10、不定式的逻辑主语常用 来表示，当形容词修饰动词不定式时,此时常用介词 O当表语形容词表示不定式的逻辑主语的性质或特征时，则用介词 OObservation 61. Ifs our duty to do that.2. It,s a mistake not to help them.3. It must be great fun to fly to the moon in a spaceship. Discovery 6以上三个句子的表语都是,它们可归纳为一个共同句式：OObservation 71. It took me more than an hour to do my homework

11、yesterday evening.2. It WilI take us a long time to walk there.3. How long does it take to get there?4. How much did it COSt you to send the package?以上四个句子是动词不定式作真正主语，由it作形式主语引导的句子，它们的 谓语是 O它们的共同句式是, 表示某人花多少时间或金钱做某事。Observations1. HOW to USe the COmPUter is a question.2. Where to PUt the bikes is be

12、ing discussed.3. When and where to have Ihe meeting has not been decided. Discovery 8和动词不定式构成不定式短语作主语。疑问词包括疑问代词Who、Whom what which、whose以及疑问副词when where和how。此外连接词whether也 适用。此时，疑问词+ to do结构可以转化为一个 o例 如 ： How to use the computer is a question. =Further thinkingComplete the following sentences and com

13、pare their usages.1 .(do) morning exercises regularly is good for your health.2 . It feels really good(do) morning exercises today. Conclusion动名词作主语表示 的行为;不定式作主语表示的动作。Practice and applyL在空白处填入1个适当的单词或括号内单词的正确形式。1. How long does it take for you(get) there by bike?2. How much did it cost you(send) the

14、 package to Beijing?3. It,s important you to walk after supper.4. It,s very rude you to turn your back to your teacher and refuse to answer.5. To make friends with these naughty boys(be) nice.6. When(hold) the meeting has not been discussed yet.7. It seemed a pity(waste) so much time on the task wit

15、hout achieving our goal.8. To change or(change) is a question We have to think about every day. .翻译句子1 .明天是否下雨，无关紧要。2 .车不用时:及时锁好很有必要。3 .这个老人对蛇的怜悯导致了他的死亡。4 .减少工业污染，清洁水质，花费了多年工作才完成。5 .对于像这样的一家公司，雇用安保人员是标准做法。III.在空白处填入I个适当的单词或括号内单词的正确形式。I had a variety of hobbies I studied in college. It was hard for me(save) much money to keep my hobbies and it was also foolish me tospend plenty of time on those because it has been my dream(be) a doctor.However, to become a doctor requires much study and it was a pity for me (leave) behind because I(waste) too mu