Unit 5 Water is life习题课件（共7份）沪教版七年级下册

(共6张PPT) Unit 5 Water is life 单元学习目标 Focusing on culture 要点精讲 It is now our duty to make sure we don't waste water or pollute it.现在,确保我们没有浪费或污染水是我们的责任。 1. It is sb's duty to do sth 意为“做某事是某人的责任”，其中it充当形式主语，真正的主语是后面的不定式短语。如： Animals are humans' good friends. It's our duty to protect them. 动物是人类的好朋...