精选优质文档-倾情为你奉上Unit4 Astronomy:the science of the starsTeaching aims: 1. Enable students to improve their listening skills and reading ability.2. Enable students to understand the development of gravity and how gravity affects us in different times and places.3. Arouse students interest to search for the mystery of space.Emphasis: 1. Words and expressions: gravity, float, cheer up, now that, break out, etc2. Astronomic knowledge like gravity and black hole.Difficulties:
