人教2011课标版《Section A 1a—2c》优质课PPT课件下载-海东地区优课

劝告等的句子; 通常省略主语you; 句中谓语

动词用动词原形; 句尾一般用降调; 祈使句的

开头是动词原形。

祈使句有肯定和否定两种：

否定的祈使句是在动词原形前(即句首)加Don't.

Sit down, please. 请坐。

Don't talk in class! 不要在课常上讲话！

Grammar

祈使句特点

1.祈使句是表示命令、 叮嘱、号召等。

2.通常省略主语you。

3.以动词原形开头，或在句首加please.

祈使句有肯定式和否定式两种

What can you do at school

or in the classroom?

What can’t you do ?

SCHOOL RULES

1. Don’t arrive late

for class. You must

be on time.

2. Don’t run in the

hallways.

3. Don’t eat in the

classroom. You must

eat in the dining hall.

4. Don’t listen to music

in the classrooms

or the hallways.

5. Don’t fight.

1a. Write the number