3a大作是什么意思_3A Unit 9 On and off

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一、教学目标：
1、能听懂、会说turn on/off …及其应答语all right./ok等。
2、能听懂、会说常见物品a light, a tv, a tap, a walkman.
3、能使用简单的祈使句表达“请别人干某事”的意思及进行应答。
4、培养和保持学生学习英语的兴趣。
二、教学重点：
1、单词：a light, a tv, a tap, a walkman, turn on, turn off.
2、日常交际用语：turn on/off…及其回答all right./ok等。
三、教学难点：
1、walkman的发音，turn on/off 的连读.
2、能在情景中灵活运用本课所学的日常交际用语。
四、课前准备：
1、教具准备：课件、磁带、录音机、实物：水龙头、随身听
2、课前准备：发给学生写有on 和off 的小卡片。
五、教学过程：
step 1. greetings
t: hello, boys and girls. nice to meet you. how are you?
step 2. revision
t: good morning,s1.
s1:good morning, miss sun.
t: let’s go to beijing. (课件出示几幅地点的图片，指图上的北京天an门)
s1: good/great, but how?
t: by plane.
work in pairs
step 3. presentation
1) t:（课前把教室的灯开好）
t: turn off the light,please.(指指灯,帮助学生完成其任务)
t:all right.
teach the word“light”（学生跟读，两两读）
t: (作关灯的动作) turn off the light.
  let’s turn off the light.
ss: all right.
teach the phrase“turn off”（学生跟读，边读边做关灯的动作。）
教师引导学生说：“turn off the light,please.”
ss: turn off the light,please.
t: ok/ all right.
叫好朋友去关灯
work in pairs like this:
s1:turn off the light, please.
s2:ok/all right.
2) t show a tap to the students. what’s this?
t: it’s a tap.
teach the word: tap
work in chains like this:
s1: turn off the tap, please.
s2: all right. turn off the tap, please.
s3: ok. ……
3) point to the tv in the classroom..
t: look, this is a tv.turn off the tv,please.
s1: ok/all right.
学生跟读tv,turn off the tv.
ask the students to make up the dialogues.
4) show a walkman to the students.
t: look, this is a walkman.
t: who can turn on the walkman? （教师手指随身听）
s1:all right.(教师引导学生上台打开随身听，播放出英文歌曲，让学生跟着音乐拍手)
t: oh, let’s go on our class. who can turn off the walkman please?
(一学生上台关掉随身听)
t: teach the word “walkman” ,“turn on”
学生跟读turn on, turn on the light. turn on the walkman。
make the dialogues like this:
s1:hello,s2. nice to meet you.
s2:nice to meet you too.
s1:turn on the walkman ,please.
s2: all right.
step4. consolidation
1) 跟读课文录音第一、二幅图
2) t: let’s learn a new rhyme <turn on and turn off>.
ss: all right.
(放录音让学生听一遍)
turn on the tv. let’s watch tv.
turn on the light. let’s read books.
turn off the tv. let’s clean the room.
turn off the light. let’s go to sleep.
跟唱，齐唱
3) work in pairs like this
s1: good evening.
s2:good evening.12
s1: how are you?
s2: fine, thank you. and you?
s1: i’m fine, too. let’s go to bed.
s2: ok.
s1:turn off the light, please.
s2: ok.
step 5. homework
回家听录音读52页3遍。
板书设计：
unit 9 on and off
turn on /off the light.(图1)     all right/ok.
                      tap(图2)
                     tv(图3)
                     walkman(图4)
3a unit 9 on and off 来自。 12

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