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Step one: Greetings
1. T:Hello!What’s your name?
T:What did you do yesterday?
T:How was your National Day holiday?
T:What can you do?(设计意图：通过连珠炮似地问答，拉近师生距离，生更易进入课堂)
Step Two: Free talk
1.Introduce myself
T:I have known a lot about you.Do you want to know something about me?
T:Ok!
a.3o years ago,I lived in an old house,now I live in a new house.
b.20 years ago,my hair was short,now my hair was long
c.10 years ago,I was a student,now I am a teacher.
d.6 years ago,I walked to school,now I drive to school.
2.A game
T:Do you know me now?
T:Good!Let’s play a game Yeah Yeah Yeah,No,No,No.
T: a.3o years ago,I lived in an old house.
b.20 years ago,my hair was long.
c.10 years ago,I was a teacher.
d.6 years ago,I walked to school.
3.Reveal the title
T:So boys and girls,these pictures are all about then,and here are all about now.Today,we’re going to learn Unit4 then and now.(设计意图：通过影集展现我过去与现在的变化，让生初步感知本课的话题，在感知后穿插游戏，激发学生的学习兴趣，同时为揭示课题埋下伏笔。)
Step three:presentation
Watch the cartoon and catch the time
T:I take a family here.This is...,they are...and this is...but six years ago,they were like this.Can you tell me how many years ago?
T:Let’s watch the cartoon and try to catch the time.（设计意图：通过观看卡通片让生整体感知课文）
T:Ok! About Mike,how many years ago?Mr Brown and Mrs Brown?Grandpa?
T:You have known the time.Let’s look at the picture,Mike can play football.What else can he do?
T-S1: maybe.
T-S2:...