资料简介：    

Teaching 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, etc

2. Astronomic knowledge like gravity and black hole.

Difficulties:

1. Help the students to understand the development of gravity.

2. Help the students to know how gravity influences us.

Teaching methods: skimming, scanning, discussing.