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Warm-up:
1.Greeting: Good morning, boys and girls.
2.Free talk and revision:
T: Do you know what covers almost three quarters of the Earth?
Great! Water is very important to all people and animals.
Can you tell me what people use water to do?（出示课件）
Ss take turns to say how to use water by using the sentence pattern:
We use water to ___ . (让学生先做好准备)
Let’s check Task 1.
What do people use water to do?（Open Ss’ books page 65）
At home; At work: We use water to______________.
（To see which group say the most.） Great!
Water is from rain. No rain，no water, we can do nothing.
Let’s check Task 2. （Open Ss’ books page 64）
S1: What will happen if there is no rain?
S2: If there is no rain, we/people will have no water to … What do you think?
S1: If there is no rain, firemen/fishermen/farmers/ cooks will …
设计思路：简单的对话问候为轻松、和谐、民主的课堂氛围奠定基础。用提问的形式直接引入本课的主要内容，让学生自然迅速进入上课学习状态，课前复习上节课与这节课相关内容不仅可以巩固上节课所学的知识，也为接下来的学习奠定了良好的基础。
Presentation:
1.Teach words:
T: Oh, listen, what sounds? Where is it from?（出示课件）
Ss listen to three different sounds and guess where it is from.
Then introduce new words by pictures: a dripping tap , a running tap , a shower
?2.Look and learn:
T: Look at the dripping tap in the pictures. What does this picture mean?（出示课件）
a. Fix a dripping tap b. Turn off a dripping tap. …
3.Look at the pictures:
?T: As is know to all, some places in China suffered severe drought .
Boys and girls, look at this picture, what do you think? Yes, we must save water.(板书save water )
4.Look , ask and answer