仁愛版初三英語上冊全冊教案4
(2)when was it invented?
(3)cloning is famous throughout the world.
(4)and it can also benefit human beings.
section c
the main activity is 1a. 本課重點活動是1a。
ⅰ. teaching aims and demands 教學目標
1. learn some new words and phrases:
servant, for certain, housework, make a contribution to
2. learn some useful sentences:
(1) no one knows for certain, but most people think that robots will be part of our lives.
(2) in short, this robot is very useful to us.
3. discuss the advantages and disadvantages of robots.
ⅱ. teaching aids 教具
錄音機/圖片/幻燈片
ⅲ. five-finger teaching plan 五指教學方案
step 1 review 第一步 復習(時間:8分鐘)
檢查作業(yè)，然后以師生互動形式，復習一般過去時的被動語態(tài)。培養(yǎng)學生熱愛科學的精神。
1. (檢查上節(jié)課的作業(yè)，讓學生匯報自己的發(fā)明成果。)
t: now i’ll check up the homework of section b and choose some students to report their results.
2. (出示幻燈片，讓學生根據幻燈片上的圖表，用過去時的被動語態(tài)做對話練習。)
invention inventor year
car karl benz 1885
radio guglielmo marconi 1895
light bulb thomas edison 1879
t: boys and girls, we have learned many inventions during the last period. look at the table and make dialogs like this:
a: when was the car invented?
b: it was invented in 1885.
a: who was the car invented by?
b: it was invented by karl benz.
t: ok! i’ll ask two students to ask and answer questions about the radio.
s1: when was the radio invented?
s2: it was invented in 1895.
s1: who was the radio invented by?
s2: it was invented by guglielmo marconi.
(再找兩組學生做類似對話。) www.xk b1. com
t: well done. you learned a lot. now, let’s talk about more inventions.
step 2 presentation 第二步 呈現(xiàn)(時間:10分鐘)
以師生互動等形式，呈現(xiàn)本課新知識。通過讓學生聽錄音并找出關鍵詞，培養(yǎng)學生的聽力及閱讀理解能力。
1. (師生互動，導入新課。)
t: we have learned many inventions such as computers, digital cameras, tv sets and light bulbs. which invention do you like best? can you tell me?
s1: computers.
s2: cars.
s3: …
t: why do you like computers best, s1?
s1: because i can learn a lot on the computers. playing computer games is very exciting.
t: but you shouldn’t spend too much time on them. it is bad for your study. which invention would you like to own, s3?
s3: i’d like to own a cellphone. it can help me communicate easily.
t: very good. anyone else?
s4: i’d like to own a car. it’s very convenient.
s5: which invention would you like to own, mr. / miss …?