高二英语上Unit 9教案3.doc

人教修订版英语高二上Unit 9 Saving the earth Grammar教案Teaching Aims :1. Revise and master some useful words, learning how to remember English words.2. Learn the Grammar: Inversion.Teaching Important Points:1. Learn to use some derivative words.2. Learn to use Inversion.Teaching Difficult Points:How to help the students use partly and fully inverted sentences correctly.Teaching Methods :1. Practising to master the language points.2. Elicitation and inductive methods to help the students master Inversion.3. Individual or pair work to make every student work in class.Teaching Aids:the blackboardTeaching Procedures:Step 1 Revision T: Yesterday we read a passage about the Earth Summit and some of the major problems facing the world. Through the passage we know at the Earth Summit, representatives from more than one hundred countries discussed some of the most important problems facing our planet. Up to now, several Earth Summits have been held and much progress has made. 1. Can you tell me in which city the 2002 Earth Summit was held?2. Do you remember one of the main themes of the 2002 Earth Summit？And what was it?3. What are the three biggest killers in the world?4. What other problems did the speakers speak about?5. What did Chinas then Premier Zhu Rongji stress?6. How can we save the earth?What is the key to the future?Step 2 Preparing for Word studyadj. n.lonely _willing _ responsible _fair _equal _poor _v. n.kill _represent _suffer _adj. adv. real _absolute _successful _Suggested answers :loneliness; willingness; responsibility; fairness ; equality; povertykiller; representative; suffering; really; absolutely; successfullyStep 3 Word StudyT: Well, now please open your books at Page 69. Look at tile first part in Word study: Complete the sentences with the words in brackets. Change their forms if necessary. First, lets study the example. Now please complete each sentence and discuss your answers with your partner. At the end, well check the answers together.Suggested answers :1. killer 2.alarming 4. citizen 5. responsibility 6. representatives 7. suffering 8. willingnessT: Now, lets do the second part. First, you should study the words in the box carefully. Then put them into two categories. At the end, state your reasons. Suggested answers:Adverbs: really, unfortunately, absolutely, especially, successfullyAdjectives: lonely, lively, ugly, lovely, friendlyStep 4 Presentation(Teacher shows the following sentences)1. Conferences like the Earth Summit help people understand that there exist serious problems and that there is still time to take action.2. Among the speakers was Chinas then Premier Zhu Rongji, who stressed the need for equality and fairness in the world.3. Not until we know more will we be able to improve the situation.4. Only by changing the way we live can we save the earth.5. Had I known that air conditioners cause so much pollution, I would never have bought one.6. A better understanding of the environment is necessary, as is the willingness to act.7. Without international cooperation, developing countries cannot prosper, nor will sustainable development be possible.T: Now, please look at the sentences and pay attention to the word order of each sentence. In what way are these sentences different from the usual sentences?Ss: The word order is not “Subject + Verb” but “Verb + Subject” or “Auxiliary/ Modal + S + V”.(Teacher writes the structures on the Bb.)T: Yes. This kind of sentence is called Inversion, which happens in questions and in a number of other cases. Look at the sentences carefully again, paying attention to the underlined words. In the first sentence, “exist” is used after “there” to express a state for existence like “there be” structure; the second sentence begins with a preposition phrase. In these two sentences, the whole predicate verb comes before the subject. The third sentence begins with a negative adverb; in the fourth sentence, “only” is placed at the beginning of the sentence with an adverbial. In these two sentences, part of the predicate comes before the subject. In most cases, an auxiliary verb or a modal verb comes before the subject and the rest of the predicate verb comes after. If there is no auxiliary or modal, do, does or did should be added. Can you understand?Ss: Yes.T: Then look at the fifth sentence and change it into another sentence with the same meaning, which begins with “if”.Ss: If I had known that air conditioners cause so much pollution, I would never have bought one.T: Quite right. In some special forms of unreal conditional clauses, when “if” is left out, part of the predicate like had, should, were should conies before the subject. That is to say, inversion can be used instead of “if”. Are you clear about that?Ss : Yes.T: Next, look at the last two sentences, To avoid repetition,“as” and “ nor” are placed at the beginning of the sentences which say that people(or thing or situation) are the same as others that have been mentioned. In this case, the structure “as/nor+ auxiliary/modal/do(does, did) + subject” should be used. Besides,“neither” and “so” can be used like “nor”and “as”. Is that clear?(Bb: as/so; neither/nor + aux./mod. / do( does. did) + subject )T: OK. Now，lets change them into the usual word order sentences. Ss: It is a special sentence pattern like“ There be” structure. “exist” can only come after “there”.T: Yes. Sit down, please. Then the next sentence.Ss: Chinas then Premier Zhu Rongji was among the speakers, who stressed the need for equality and fairness in the world.S3: We will not be able to improve the situation until we know more.S4: We can save the earth only by changing the way we live.S5: If I had known that air conditioners cause so much pollution, I would never have bought one.S6: A better understanding of the environment is necessary, and the willingness to act is necessary, too.S7: Without international cooperation, developing countries cant prosper. Sustainable development will not be possible either.Step 5 Grammar PracticeT: Well, now please turn to Page 70. Look at the first part ,Grammar: Rewrite the following sentences, beginning with the underlined part. First study the example, and then complete each sentence below. A few minutes later, Ill check your work. Begin now.T: All right. Now lets come to the second part. Complete the following sentences using the words in the box: so, neither, nor, as. Suggested answers:1. so/as have 2. neither/nor should 3. so/as do 4. so/as am 5. neither/nor do 6. so/as is 7. neither/nor 8. neither/nor can 9. so/as canT: From these sentences, we know the verb-form after “so, neither, nor, as”should be the same as the verb-form after the first subject. The person and number should agree with its own subject.Step 6 HomeworkWorkbook exercises 1,2The Design of the Writing on the Blackboard Grammar: Inversion 1. There exist/be. 2. Not/Never/Seldom. 3. Only + adverbial 4.so, neither, nor, as+ V +SGrammar 倒装1.完全倒装（谓语全部放到主语前面）1).为了使某种情景能够表达的生动形象，在以in, out, up, sown, away, off, over, next, such, back 等副词作壮语置于句首，谓语动词是come, go, rush, run 等不及物动词的句子里，如：a .Out rushed the students the moment the bell rang. b. . Up jumped the cat and caught the mouse .Down drops the meat into th foxs mouth c. Next came Tom. (若主语为人称代词，则用自然语序)。 There goes the bell. Down he went. d. In he came and the lesson began .2).there, here, now ,then 引导的句子及 there/here be(exist, etc)引导表“存在”的句子。e. There goes the bell and class is over .f.There exist different op ions on this question（若主语为人称代词，则用自然语序）There you go again .（你又来这一套）3）表示“地点”的词语置于句首或强调“地点”概念时，应注意主谓一致的问题，如a, Between the two buildings stand s a tall tree .b. On the ground lay a sick goat. 4) 作表语的现在分词/过去分词/形容词+系动词+主语a .Sting at the back of the room was a shy girl with two big eyes. b. Written on the blackboard are the names of those who were late yesterday .3. 部分倒装1)表达否等意义或半否定意义的副词，介词短语，连词等置于句首时。常见词语有 never, little, no sooner, hardly, seldom, not, by no means, in no case, in no time, not until, not a bit, many a time, scarcely, barely no longer ,at no time, o sooner. .than. often ,hardly. .when, not only but also.等，如a .Never before has out country been as united as it is