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参考词汇: valuable 珍贵的，use …to do …,
brush the teeth, Turn off the tap
clean …with…, clean the floor ,
used water 用过的水,water the plants
Homework: Read the article aloud. 教学目标语言知识认识和理解单词add, chemical, drop, fresh, journey, on, pipe, salt，through, valuable, voice以及短语turn off, add...to...等；认识单词 reservoir,和短语
2.初步接触修饰可数名词和不可数名词的限定词。语言技能1.通过上下文语境,猜测生词的基本含义。
2.根据流程图及关键词复述水的循环过程。情感态度了解水循环的过程，体会节约用水的重要性。教学重点1.学习并掌握水的循环过程2.了解主阅读篇章的内容学习核心单词和短语。教学难点根据流程图及关键词复述水的循环过程教学过程Learning by themselves:
Translation:
云 河流 水库 管道
大海 掉进 流进
把……加入…… 旅行通过
进入
Class activities
Step 1. Play a game
Step 2.Read the article fast and answer the following
questions.
Who does the water talk to?
2. What does the water ask the girl to do? Why?
What does the water mainly talk about?
Step3. Read about the journey of the drop of water again and fill