《Don't touch the machinesplease!》PPT课件4

《Don't touch the machines,please!》PPT课件4

Welcome to our factory, children.

These machines make crisps.

What do these machine do?

It washes the potatoes.

This machine put the crisps in the bags.

... ... ...

祈使句：表示请求或命令的句子。谓语动词没有时态和数的变化。

祈使句的结构：

1、肯定：以动词原型开头，please可放在开头或结尾。放在结尾需用逗号跟前面分开。

例句：Open the door!

Please open the door!

Open the door, please!

2、否定：以don’t开头后接动词原型。

Don’t open the door!

Don’t open the door, please!

... ... ...

Memory Game

Don’t write here!

Don’t sing here!

Stop!

Wash your hands.

Don’t talk here!

Wear this hat!

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