7B Unit 4 一 重点短语1.过来;快点;加油 come on2.充满,装满... be full of / be filled with...3.乘宇宙飞船去月球 go to the moon by spaceship/i怕迅速跑开了.(run away)9.我英语学得好但数学差些.(be weak in)10.当我们到达博物馆的时候,导游给我们做了介绍.(give...an introduction)