111Unit 2 The environmentGrammarTeaching Aims1. Help Ss understand verbing form as an adjective or adverb2. Master a verb-ing as attributive, predicative, object complement ect.Teaching difficult points1. How to use verb-ing form as an adjective or adverb2. How to use verb-ing phrasesTeaching steps;Step1 Lead-in1. The children stopped_as the teacher came inA.talk B.to talk C.talking D.talked2. If he can stop them _there ,I will do it A.go B.to go C.gone D.going3. He is quite used _in all sorts of weatherA.fly B.to fly C.to flying D.to flied4. Doctor Bethune went on_throughtout the nightA.work B.worked C.to work D.working 5. Your shoes are dirty .They need_badly A.wash B.washed C.to wash D.WashingStep2 1.Verb-ing form as an adjective or adverb*AttributeIt is a very moving film and it is well worth seeingCanada is an English-speaking countryThe girl sitting in the corner is my best friend.*PredicativeYour journey in Kerya is really excitingWhat you did was disappointing.*Object complementWe find the journey to America exciting.I heard someone playing the violin in the next room.注:在see hear watch feel notice等動(dòng)詞后，用現(xiàn)在分詞構(gòu)成的復(fù)合賓語(yǔ)，表示動(dòng)作正在進(jìn)行。而動(dòng)詞原形則表示動(dòng)作的全過(guò)程，即動(dòng)作已結(jié)束。We saw the teacher making the experiment.Isaw the girl get into the car and drive off.2.A verb-ing can be used after verbs like stand,sit,lie .These two action are happening at the same time.They stood talking to each other .They stood when they were talking to each other. 3.A verb-ing has a perfect form , eg having worked,Having worked side by side with many environmentalists,I know that a healthy environment and stable economy should be possible at the same time.Step 3. Practise. P29 A and BHomework: 1. Review Verb-ing form as an adjective 2. Finish the exerciseVerb-ing phrasesTeaching steps;Step 1: Lead-in1.-full preparations, we decided to put off the meeting till next week.A.We did not make B.Having not make C We had not made D.Not having made2.European football is played in 80 countries,-it the most popular sport in the world.A.making B makes C made Dto made 3.-what the situation would be like ,they decided to keep silent.A. Having not know B Knowing not C.Not know D.Not knowingStep 2 Verb-ing phrases1. Verb-ing phrases can express *timeSeeing the big snake ,the girl was almost frightended to death.=When she saw the big snake,*reason Being a student,I must work hard.=Because I am a student, I must work hard.*result The factory keeps releasing smoke,making the air dirty.=The factory keeps releasing smoke.As a result ,the air is made dirty.*conditionPreparing fully, we can achieve great things =If we prepare fully, we can .2. We can also use the pattern conjunction+verb-ing to express time.The common conjunctions are when,whenever,while,once,and until.We have to take environmental protection into consideration when developing the economy.3. The understood subject of a verb-ing clause is usually the same as the subject of the main clauseHe travelled on the plane like this, keeping the tortoise hidden in a blanket.=When he travelled on the plane like this , he kept the tortoise hidden in a blanket.4. We put NOT before the verb-ing to create its negative formHe sat there, not knowing what to say.Step 3. Practise P31Step 4 Exercise:Homework: 1.Review Verb-ing phrases2. Finish the exercise111