教学目标：1、帮助学生了解look and learn中的词组。
2、通过listen and say的情景对话，让学生开展听录音朗读、问答等活动，帮助学生掌握核心句型。
读写说安排：读：读懂本单元的核心词汇，了解怎样询问和介绍水的用途。
写：正确书写本单元的核心句型：we use water to wash our hands.
说：用how do we use water?询问水的用途；
用we use water to简单介绍水的用途。
教学重难点：词汇：use, clothes, farmer, useful, grow crops, put out fires.
句型：we use water to wash our hands.
stepi : pre-task preparations
1、 利用谜语引出主题water。教师说谜语，让学生猜教师描述的是什么。
it has no color
it is everywhere around us
it is in the river
it is in the sea
we use it to wash our hands
we are thirsty, we can drink it
what is it?
stepii: presentation
1、 提问where does water come from?并出示一些跟水有关的图片，如水龙头、井、湖、海、河流等，与学生讨论。
it comes from the sea.
it comes from the tap.
it comes from the rain.
it comes from the lake.
2、 与学生讨论水的用途，导入核心句型及单词use和useful。
t: water is everywhere around us. water is very important. it is very useful. (write useful water on the blackboard)we use water to do a lot of things, we use water to wash our hands.
s: use, u-s-e, we use water to wash our hands.
t: water is very useful. u-s-e-f-u-l, useful.
s: water is very useful. u-s-e-f-u-l, useful.
3、 出示look and learn的图片，并提问学生水的用途。
t:（show the picture for put out fires）look at this picture. the firemen is using water to put out fires.
s: put out fires.
t: what do farmers use water for?(show the picture for grow crops)
s: they use water to grow crops.
4、 学生结对讨论how do we use water?将学生的答案出示在黑板上。
5、 播放课文listen and say的录音，学生先跟读，然后分角色朗读课文，并完成课本75页的练习。
complete the sentences.
1 water comes from the sea,
the rain and the tap .
2 we use water to wash our hands,
wash vegetables, wash clothes,
grow crops, and put out fires.
6、 板书
wash hands.
wash clothes.
we use water to cook food.
wash vegetables
put out fires.
grow crops.
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