外研版四年级英语下册《Don't touch the machines,please!》PPT教学课件，共18页。
启发思考
What do the signs mean?
Don’t turn left!
Don’t turn right!
What do the signs mean?
Don’t smoke!
Don’t park!
The baby is sleeping!
What are prohibited（禁止的）?
Don’t sing here!
Don’t dance here!
Don’t talk here!
Don’t play here!
自主或小组探究
This is a food factory.
What do the machines make?
They make crisps.
It cuts the potatoes.
It puts the crisps in their bags.
总结提高
表示禁止的：Don’t…,please!
表示肯定的：Wear…please!
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关键词：《Don't touch the machines,please!》PPT课件免费下载，.PPT格式；
