Unit 1 A land of diversity The First Period Warming up一Aims:1. Teaching aims 教学目标：Help the students learn more information about America.重点词汇和短语ocean, coast, mountain, range, compare2. Ability aims能力目标Enable the students to know more about America and can give some cities names 二Contents Step I Ask the students to talk about the names in groups, and then write down them on the map.Step II Compare answers with other groupsStep III Give the correct names to the
