What  a  large  population!

（核對答案后，讓學生自讀對話，為表演對話做準備。）
t: excellent. next, please prepare 3a for two minutes with your partners. then try to perform it well.
(教師在黑板上寫出3a的關鍵詞，并在黑板上張貼康康家的近照和60年代家庭人多條件差的全家福。)
a nice photo, love
their living conditions
at least
the largest population
great changes
one-child policy
little emperors
be strict with

(請幾組同學到前面看著黑板上的關鍵詞及照片進行表演，看哪一組同學的表現好。)
t: please stop. which group can come to the front and perform the dialog. let’s welcome the volunteers.
(本段對話較難，鼓勵學生不要怕犯錯誤，可讓一些優生先做示范。)
g1: …
g2: …
g3: …
(總結各小組表現。)
t:  i think you had a wonderful performance. ga is the best. gc has made rapid progress…
step 4  practice  第四步  練習 （時間:10分鐘）

1.t: we've just talked about kangkang’s family photos. next, let’s practice the present perfect. please do 2 by yourselves. you can do it in groups.
(兩分鐘后，核對答案。)
t: let’s check your answers.
(板書重點詞匯。)
just already yet ever never
t: now please make sentences with these words.
s1: i have just made a sentence.
s2: he has already done his homework.
s3: have you heard from him yet?
s4: have you ever driven a car?
s5: i have never been abroad.
(小組討論人口多帶來的問題，并與同伴準備進行對話表演。)
2.（教師用上面的詞造一個句子，引出下文。）
t: china has already been a country with the largest population. so it has already brought lots of problems. do you think so?
ss: yes.
t: now let’s talk about the problems because of too many people. for example: shopping, traveling...
(教師用小黑板或幻燈片展示不同場合的對話開頭或關鍵句。)
don't … again, too  many people, it's difficult to…population problem, find out some ways
work out the problem, one-child policy
(兩分鐘后。)
t: stop here. which group can come here and perform your dialog?
g1: ...
g2: ...
(學生遇到表達上的困難，教師可適當給以幫助。)
（教師總結。）
t: you did excellently. g2 is …, g3 is…

step 5  project  第五步  綜合探究活動  （時間:5分鐘）

（小組討論本課出現的主要話題。）
1.t: today we know great changes have taken place in china. you can discuss these topics: the population problem, economy of china, one-child policy and little         emperors.
(討論完畢，學生匯報結果。)
t: i think you have prepared well. who can make a report about one of the items?
s1: ...
s2: ...
s3: ...
(教師點評。)
t: s1 talked about the population problem, it’s wonderful. s2 talked about economy and living conditions; it’s a good job. s3 made a report about“little emperors”. we shouldn't  be “little emperors” at home…