清华大学版五年级下册Unit 3 The environment and usLesson 17学案设计
展开Unit 3 The environment and us
Lesson 17
【学习目标】
1．To learn the meaning and simple usages of new words and phrases.
2．To understand and use the sentence patterns.
【学习重难点】
1．To learn to use some new words to describe water.
2．To learn to introduce water to others.
【学习过程】
一、新知学习
1．There is salt water and fresh water on the Earth. Salt water is water from __________
and oceans. Fresh water is water from rivers and __________.
2．单词翻译。
salt__________
fresh__________
waste__________
sea__________
ocean__________
environment__________
3．Finish the sentences to answer the questions.
(1) What is fresh water?
Fresh water is _________________________________________________________.
(2) What are the two ways people waste water?
a. _____________________________________________________________.
b. _____________________________________________________________.
(3) How do people make water dirty?
_______________________________________________________________.
二、达标检测
1．They waste water when they keep water __________.
2．They waste water when they water __________.
3．They make water dirty when they throw __________ into rivers and lakes.
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