Saving the earth（The Fourth Period）

the fourth period
teaching aims:
1. learn and master the following words: defend, incorrect, affect, advise
2. train the students listening and speaking abilities.
3. learn to write an evaluation paragraph.
teaching important points:
1. master the useful words and phrases appearing in this period.
2. learn to support an opinion both in speaking and writing.
teaching difficult point:
   how to help the students finish each task and improve their skills to use language.
teaching methods :
1. oral practice to train the students' speaking ability.
2. written work to train the students' writing ability.
3. individual, pair or group work to make every student work in class.
teaching aids:
1. a tape recorder
2. a projector
4. the blackboard
teaching procedures:
step i greetings
greet the whole class as usual.
step ii revision and lead-in
t: yesterday, we learnt the use of inversion and did some exercises. can you
    tell me the difference between inverted sentences and usual sentences? wu
   li, would you like to have a try?
sl: yes. in an inverted sentence, part of the predicate or the whole predicate
    comes before the subject. in a usual sentence, the predicate comes after the
    subject.
t: quite right. sit down, please. then for what reasons do you think inversion is
   used? any volunteer?
s2: i think inversion is used for two reasons. one for the need of the grammatical structure of a certain type of sentence the other for emphasis of a certain part of a sentence.
t: quite right. now, let's do an exercise, look at the screen and write your answers on a piece of paper. then i'11 check the answers with the whole class.
   (teacher shows the following on the screen. )
rewrite the following sentences using inversion.
1. we can finish the work on time only by seizing every minute.
  ______  ______  _______ _______ ________ _______ _______finish the work on time.2. i have never heard such nonsense in all my life.
_________ _________ _________ heard such nonsense in all my life.
3. a piece of paper was folded in the pocket.
  ______ ______ ______ _______ _______ a piece of paper.
4. he little realizes how important this heart operation is.
   ______ _______ _______ _______ how important this heart operation is.
5. churchill was not only a statesman but also a poet.
   ______ ______ _______ churchill a statesman but also a poet.

suggested answers:
1. only by seizing every minute can we