高二英语The environment教案

Teaching Aims
1. Help Ss understand verbing form as an adjective or adverb
2. Master a verb-ing as attributive, predicative, object complement ect.
Teaching difficult points
1. How to use verb-ing form as an adjective or adverb
2. How to use verb-ing phrases
Teaching steps;
Step1 Lead-in
1. The children stopped____as the teacher came in
A.talk B.to talk C.talking D.talked
2. If he can stop them ____there ,I will do it
A.go B.to go C.gone D.going
3. He is quite used _____in all sorts of weather
A.fly B.to fly C.to flying D.to flied
4. Doctor Bethune went on_____throughtout the night
A.work B.worked C.to work D.working
5. Your shoes are dirty .They need____badly
A.wash B.washed C.to wash D.Washing
Step2 1.Verb-ing form as an adjective or adverb
*Attribute
It is a very moving film and it is well worth seeing
Canada is an English-speaking country
The girl sitting in the corner is my best friend.
*Predicative
Your journey in Kerya is really exciting
What you did was disappointing.
*Object complement
We find the journey to America exciting.
I heard someone playing the violin in the next room.

?:??see hear watch feel notice?????????????????????????????????????С?????????????????????????????????
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 B
Homework: 1. Review Verb-ing form as an adjective
2. Finish the exercise
Verb-ing phrases
Teaching steps;
Step 1: Lead-in
1.-------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 made
2.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 knowing
Step 2 Verb-ing phrases
1. Verb-ing phrases can express
*time
Seeing 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.
*condition
Preparing 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 clause
He 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 form
He sat there, not knowing what to say.
Step 3. Practise P31
Step 4 Exercise:

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