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2.To talk about the different forms of transport at different times .
学法指导：
task-centered approach，students preparen and present their own ppt
教具准备：
课件,智慧课堂
教学过程：
Step 1: Free talk (Lead in)
Talk about the changes around us, including people,house,transport and environment.
Step 2: Check their preview homework (Presentation )
Two students show their ppt.
Step3 Listen to the conversation between Eddie and Hobo.
Questions
1) What was in the bowl an hour ago?
2) Have Eddie and Hobo changed?
3) Who has eaten Hobo’s food?
4) What was Eddie like in the past?
Hobo and Eddie have changed .
Explaining the new tense :
the present perfect tense
Eg: 1) Have you seen my food?
(see—saw—seen)
2)I’ve (I have) eaten it.
(eat—ate—eaten)
We have not seen him for a long time .
How has he changed?
Let Ss read the dialogue in pairs.
Step 4 Presentation
1. Discuss with the Ss.: How do you go to school?
2.Show the pictures of different forms of transport.
3.Two students present their ppt about the changes in transport