（2）Learn to write a letter，a travel advertisement and a travel journal.

　　●教学难点

　　Plan an eco-travel for the National Holidays.

　　●教具准备

　　Multi-media classroom and other normal teaching tools.

　　●教学过程

　　Step 1 Greetings

　　Step 2 Speaking

　　T：Today，I'll first show around some famous dams in the world.

　　Show the picture of Aswan Dam，the Hoover Dam and some famous Dams.

Aswan Dam

the Hoover Dam in Colorado，USA