必修3第四单元A visit to the moon导学案

第四课时    a visit to the moon
teaching aims:
to read and understand the text.
to master the new words and useful expressions.
课前预习：
一．单词学习
1.拉力；牵引力                    2.宇宙飞船               
3.欢呼                            4.漂浮                   
5.团；块；质量                 
二．词组学习
1.为……欢呼     阅读全文