仁愛版初三英語上冊全冊教案4
t: and when was it invented?
ss: it was invented in 1903.
t: we have talked about so many inventions. now we are going to learn something new about a great technology. (拿出圖片。) now look at this picture. what animal is it?
ss: it’s a sheep.
t: yes, it is a sheep, and it is a cloned sheep. have you ever heard of clone?
(教師釋義并領讀clone，要求學生掌握。)
clone
ss: yes, of course.
t: that’s very good. cloning is a famous experiment throughout the world. so far, scientists have cloned many animals to save those animals in danger. the cloning technology has been used in human organs. it can benefit human beings.
(板書并讓學生掌握生詞experiment；了解benefit和organ。)
experiment, organ, benefit
t: then what’s the name of the first cloned sheep?
ss: dolly.
t: yes, now let’s read 3a and answer the following questions.
3. (指導學生閱讀3a，回答下列問題并核對答案，為完成3b作鋪墊。同時畫出文中的關鍵詞及短語，為下一環(huán)節(jié)的課文復述作準備。)
(板書下列問題。)
(1) when and where was the cloned sheep created?
(2) what other things has man cloned?
(3) what’s used in cloning?
(4) what are advantages and disadvantages of cloning?
(板書關鍵詞及短語。要求學生理解aids。)
dolly, be created, famous throughout the world, dna, in every part of your body, be similar to, save, benefit human beings, explore more ways to, heart disease, aids and cancer, however
4. (讓學生聽3a并跟讀，畫出重點詞組，教師板書。)
t: please listen to 3a and read after it. find out the important phrases.
(板書，要求學生掌握。)
so far, be similar to, the same as, no doubt
(學生聽完錄音后，與教師板書的內容對照，并朗讀3a課文，教師講解本課重要詞組。)
step 3 consolidation 第三步 鞏固(時間:9分鐘)
通過角色表演、復述等形式鞏固1a和3a內容及一般過去時的被動語態(tài)。
1. (兩人一組分角色表演1a。)
t: please act out 1a in roles.
2. (再讀1a，完成1b。)
3. (讓學生再讀3a并討論3b中的問題，完成3b。)
4. (指導學生用剛才自己所畫的3a中的關鍵詞，以接龍的方式復述3a。)
t: just now, we’ve learned something about cloning. can you say something about it?
s1: dolly, a cloned sheep.
t: yeah. it’s well-known.
s2: cloning is known as a great experiment all over the world.
t: good!
s3:dolly was created in scotland more than ten years ago.
s4: so far, scientists have cloned rabbits, sheep, cows, mice, pigs and some other animals.
…
t: excellent! now, repeat what you have said just now one by one, and you will get the whole paragraph.
(讓剛才搶答問題的學生重復一遍自己所說的那些話，教師不再提示關鍵詞，讓學生按同樣的方式繼續(xù)進行接龍。為激發(fā)學生的興趣，可分組競賽，看哪組復述的句子又快，又多，又準確。)